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Monolithic Power Systems

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FY2014 Annual Report · Monolithic Power Systems
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2014 ANNUAL REPORT ON FORM 10-K

To Our Stockholders, Customers, Partners and Employees: 

Monolithic Power Systems had an outstanding year in 2014 with record revenue, earnings and 
stock  price.  We  continued  to  make  excellent  progress  in  the  execution  of  our  revenue 
diversification  and  growth  strategy  which  is  driven  by  new  product  offerings,  design  wins, 
market share gains and our first-ever acquisition. The strength of our financial performance and 
balance  sheet  allowed  our  Board  of  Directors  to  initiate  a  quarterly  cash  dividend  program  in 
2014.    This  dividend  program,  combined  with  our  existing  stock  repurchase  program, 
demonstrates  our  confidence  in  MPS’s  future  and  our  commitment  to  long-term  stockholder 
value. 

Over  our  first  decade  as  a  public  company,  we  have  grown  consistently  and  organically  at  a 
compound  annual  growth  rate  of  19.5%.    During  that  same  period,  our  stockholder  return 
measured in stock price appreciation grew at a compound annual growth rate of 17.5% per year.   

Financial Highlights 

In  2014,  many  of  MPS’s  key  financial  metrics  improved over 2013. Revenue grew by 19% to 
$282.5  million,  clearly  outperforming  the  10%  growth  rate  estimated  by  SIA  for  the  analog 
semiconductor industry.  Our non-GAAP gross margin expanded 60 basis points to 54.6%. Non-
GAAP operating income and non-GAAP EPS, excluding income resulting from O2 Micro’s $9.5 
million payment, grew 36% and 35%, respectively, over 2013. 

In terms of end markets: 

 

Industrial  and  automotive  sales  grew  43%  from  prior  year  fueled  by  product  sales  for 
applications  in  smart  meters,  automotive,  security  and  power  adaptors.    We  have  also 
seen significant design win activities, which will accelerate revenue growth in 2015 and 
2016. 

  Consumer  product  sales  grew  23%  from  prior  year  driven  primarily  by  high  value 
consumer markets like gaming, LED lighting, battery management and home appliances. 

 

In communications markets, sales grew 15% from prior year fueled largely by growth in 
networking and telecom opportunities. 

Business Highlights 

During  2014,  we  completed  the  acquisition  of  Sensima  Technology  SA  (Sensima).  Based  in 
Switzerland,  Sensima  develops  magnetic  sensors  for  angle  measurement  as  well  as  three-
dimensional magnetic field sensing. By combining Sensima’s real time precision magnetic angle 
sensing with our technologies, we expect to create new opportunities with customers by offering 
enhanced solutions in power management for key industries such as automotive, industrial and 
cloud computing.  Since the acquisition, multiple European motor driver customers are designing 
in  these  revolutionary  motion  control  systems.    We  are  very  excited  about  the  future  of  this 
technology. 

 
 
 
 
 
 
 
 
 
In  2014,  we  signed  key  partnerships  with  Future  and  Avnet  Memec  which  are  focused  on 
accelerating  our  design  activity  and  expanding  coverage  in  the  North  America  and  Europe.  
These relationships will multiply the number of sales and field application engineers available to 
sell and promote our products in markets that are strategically important to MPS.   

Other exciting developments include: 

  We continue to build our portfolio of “system on a chip” MPM modules by introducing a 
new  mid-voltage  family  of  products.    Based  on  our  industry  leading  monolithic  BCD 
process  technologies  and  our  patented  packaging  technology,  our  MPM  modules  have 
achieved  the  smallest  footprint  on  the  market  today.  We  continue  to  see  widespread 
acceptance of the MPM module in the industrial, storage and high performance consumer 
markets. 

 

In the Internet of Things, we have grown in various home automation projects.  Our tiny 
AC/DC  products  have  won  multiple  sockets  where  only  a  few  watts  of  power  are 
required  for  Wi-Fi,  zigbee,  sensor  and  similar  applications.    Our  MPM  modules  are 
attractive  to  customers  with  space  constrained  applications  and  we  have  won  several 
sockets in this market. 

  We expanded our LED lighting portfolio with a 3rd generation LED driver that includes 
power  factor  correction  with  dimming  capability  that  has  been  even  further  enhanced 
from our previous industry leading generation.  We have multiple design wins for this 3rd 
generation LED driver. 

In our first decade as a public company, we have delivered outstanding financial results driven 
by  successful  execution  of  our  product  and  market  diversification  strategy  backed  by  our 
proprietary  leading  edge  technology.  Looking  ahead  to  the  next  decade,  we  will  continue  to 
execute  this  strategy  for  sustainable  and  consistent  growth,  thereby  enhancing  value  to  our 
stockholders and strengthening business relationships with our customers and partners. 

Sincerely, 

Michael R. Hsing 
Chairman of the Board, President and Chief Executive Officer 

 
 
 
 
 
 
 
 
 
UNITED STATES 
SECURITIES AND EXCHANGE COMMISSION 
Washington, D.C. 20549 

FORM 10-K  

(Mark One)  
☒ 

ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

For the fiscal year ended December 31, 2014 
or 

☐ 

TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 

Commission file number: 000-51026  

 Monolithic Power Systems, Inc. 

(Exact name of registrant as specified in its charter)  

Delaware 
(State or other jurisdiction of incorporation or organization) 

77-0466789 
(I.R.S. Employer Identification Number) 

79 Great Oaks Boulevard, San Jose, CA 95119 (408) 826-0600 
(Address of principal executive offices, including zip code and telephone number) 

Securities registered pursuant to Section 12(b) of the Act: 

Title of each class 
Common Stock, $0.001 Par Value 

Name of each exchange on which registered 
The NASDAQ Global Select Market

Securities registered pursuant to Section 12(g) of the Act: None   

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act of 1933. Yes ☒ No ☐  

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Securities Exchange Act of 

1934 (the “Exchange Act”). Yes ☐ No ☒ 

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Exchange Act during the 
preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for 
the past 90 days. Yes ☒ No ☐ 

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data 
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such 
shorter period that the registrant was required to submit and post such files). Yes ☒ No ☐ 

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, 
to  the  best  of  the  registrant’s  knowledge,  in  definitive  proxy  or  information  statements  incorporated  by  reference  in  Part  III of  this  Form  10-K  or  any 
amendment to this Form 10-K. ☐ 

Indicate  by  check  mark  whether  the  registrant  is  a  large  accelerated  filer,  an  accelerated  filer,  a  non-accelerated  filer  or  a  smaller  reporting 

company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act. 

Large accelerated filer ☒        Accelerated filer ☐        Non-accelerated filer ☐        Smaller reporting company ☐ 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☒  

The number of shares of the registrant’s stock outstanding as of June 30, 2014 was 38,774,391.  The closing price of the registrant’s common 
stock on the Nasdaq Global Select Market on June 30, 2014 was $42.35.  The aggregate market value of the voting and non-voting common equity held by 
non-affiliates of the registrant based upon the closing price of the Common Stock on the Nasdaq Global Select Market on June 30, 2014 was $946.0 million.* 

There were 39,290,882 shares of the registrant’s common stock issued and outstanding as of February 23, 2015.   

Portions of the registrant’s Proxy Statement for the registrant’s 2015 Annual Meeting of Stockholders are incorporated by reference into Part III 
of this Form 10-K to the extent stated herein.  The Proxy Statement will be filed within 120 days of the registrant’s fiscal year ended December 31, 2014.   

DOCUMENTS INCORPORATED BY REFERENCE 

* 

Excludes 16,437,858 shares of the registrant’s common stock held by executive officers, directors and stockholders whose ownership exceeds 5% 
(“affiliates”) of the Common Stock outstanding at June 30, 2014.  Exclusion of such shares should not be construed to indicate that any such person
possesses the power, direct or indirect, to direct or cause the direction of the management or policies of the registrant or that such person is controlled 
by or under common control with the registrant. 

 
This page intentionally left blank

MONOLITHIC POWER SYSTEMS, INC. 
TABLE OF CONTENTS 

PART I

Page

Item 1. 

Item 1A 
Item 1B 
Item 2. 
Item 3. 
Item 4. 

Business .........................................................................................................................................................  1 
Executive Officers of the Registrant ..............................................................................................................  6 
Risk Factors ...................................................................................................................................................  7 
Unresolved Staff Comments ..........................................................................................................................  22 
Properties .......................................................................................................................................................  22 
Legal Proceedings .........................................................................................................................................  22 
Mine Safety Disclosures ................................................................................................................................  22 

PART II

Item 5. 

Market for Registrant's Common Equity, Related Stockholder Matters and Issuer Purchases of Equity 
Securities .......................................................................................................................................................  23 
Item 6. 
Selected Financial Data .................................................................................................................................  25 
Management's Discussion and Analysis of Financial Condition and Results of Operations .........................  26 
Item 7. 
Item 7A.  Quantitative and Qualitative Disclosures About Market Risk .......................................................................  36 
Financial Statements and Supplementary Data .............................................................................................  37 
Item 8. 
Item 9. 
Changes in and Disagreements with Accountants on Accounting and Financial Disclosure ........................  71 
Item 9A.  Controls and Procedures ................................................................................................................................  71 
Item 9B.  Other Information ..........................................................................................................................................  73 

PART III

Item 10.  Directors, Executive Officers and Corporate Governance ............................................................................  73 
Executive Compensation ...............................................................................................................................  73 
Item 11. 
Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters ......  73 
Item 12. 
Certain Relationships and Related Transactions, and Director Independence ..............................................  73 
Item 13. 
Principal Accountant Fees and Services ........................................................................................................  73 
Item 14. 

PART IV

Item 15 

Exhibits and Financial Statement Schedules .................................................................................................  74 
Signatures ......................................................................................................................................................  77 

Except as the context otherwise requires, the terms “Monolithic Power Systems”, “MPS”, “Registrant”, “Company”, 

“we”, “us”, or “our” as used herein are references to Monolithic Power Systems, Inc. and its consolidated subsidiaries. 

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FORWARD-LOOKING STATEMENTS 

This Annual Report on Form 10-K and the documents incorporated herein by reference contain forward-looking statements 
within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange 
Act of 1934, as amended, that have been made pursuant to and in reliance on the provisions of the Private Securities Litigation 
Reform Act of 1995. These statements include among other things, statements concerning: 

• 

the above-average industry growth of product and market areas that we have targeted, 

    •  our plan to increase our revenue through the introduction of new products within our existing product families as well

as in new product categories and families, 

     •  our intention to exercise our purchase option with respect to our manufacturing facility in Chengdu, China, 

     •  our belief that we will continue to incur significant legal expenses that vary with the level of activity in each of our

legal proceedings, 

     • 

the effect that liquidity of our investments has on our capital resources, 

     • 

the continuing application of our products in the communications, storage and computing, consumer and industrial
markets, which account for a majority of our revenue, 

     •  estimates of our future liquidity requirements, 

     • 

the cyclical nature of the semiconductor industry, 

     •  protection of our proprietary technology, 

     •  near-term business outlook for 2015 and beyond, 

     • 

the factors that we believe will impact our ability to achieve revenue growth, 

     • 

the outcome of the IRS’s audit of our tax returns, 

     • 

the percentage of our total revenue from various market segments,  

    •  our ability to integrate Sensima successfully and achieve the anticipated benefits from the acquisition,  

    •  our  ability  to  identify,  acquire  and  integrate  future  acquisitions  and  achieve  the  anticipated  benefits  from  such

acquisitions,  

    •  our intention and ability to continue our stock repurchase program and pay future cash dividends, and 

     • 

the factors that differentiate us from our competitors. 

In some cases, words such as “would,” “could,” “may,” “should,” “predict,” “potential,” “targets,” “continue,” “anticipate,” 
“expect,” “intend,” “plan,” “believe,” “seek,” “estimate,” “project,” “forecast,” “will,” the negative of these terms or other 
variations  of  such  terms  and  similar  expressions  relating  to  the  future  identify  forward-looking  statements.  All  forward-
looking  statements  are  based  on  our  current  outlook,  expectations,  estimates,  projections,  beliefs  and  plans  or  objectives 
about our business and our industry. These statements are not guarantees of future performance and are subject to risks and 
uncertainties. Actual events or results could differ materially and adversely from those expressed in any such forward-looking 
statements. Risks and uncertainties that could cause actual results to differ materially include those set forth throughout this 
Annual Report on Form 10-K and, in particular, in the section entitled “Item 1A. Risk Factors”. Except as required by law, 
we disclaim any duty to and undertake no obligation to update any forward-looking statements, whether as a result of new 
information relating to existing conditions, future events or otherwise or to release publicly the results of any future revisions 
we may make to forward-looking statements to reflect events or circumstances after the date hereof or to reflect the occurrence 
of unanticipated events. Readers are cautioned not to place undue reliance on such statements, which speak only as of the 
date of this Annual Report on Form 10-K. Readers should carefully review future reports and documents that we file from 
time to time with the Securities and Exchange Commission, such as our Annual Reports on Form 10-K, Quarterly Reports 
on Form 10-Q and any Current Reports on Form 8-K  

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ITEM 1.    BUSINESS 

General 

PART I 

Monolithic Power Systems (“MPS”) is a leading company in high performance power solutions. Founded in 1997, MPS 
pioneered integrated power semiconductor solutions and power delivery architectures. MPS's mission is to provide innovative 
power solutions in cloud computing, telecommunications, industrial and automotive, and consumer market segments. MPS 
has over 1,000 employees worldwide, located in the United States, China, Taiwan, Korea, Japan and across Europe. 

Industry Overview  

Semiconductors comprise the basic building blocks of electronic systems and equipment. Within the semiconductor industry, 
components  can  be  classified  either  as  discrete  devices,  such  as  individual  transistors,  or  as  ICs,  in  which  a  number  of 
transistors and other elements are combined to form a more complicated electronic circuit. ICs can be further divided into 
three primary categories: digital, analog, and mixed-signal. Digital ICs, such as memory devices and microprocessors, can 
store or perform arithmetic functions on data that is represented by a series of ones and zeroes. Analog ICs, in contrast, handle 
real  world  signals  such  as  temperature,  pressure,  light,  sound,  or  speed.  In  addition,  analog  ICs  also  perform  power 
management functions, such as regulating or converting voltages, for electronic devices. Mixed-signal ICs combine digital 
and analog functions onto a single chip and play an important role in bridging real world phenomena to digital systems. 

Analog and Mixed-Signal Markets.  We focus on the market for ‘high performance’ analog and mixed-signal ICs. ‘High 
performance’ products generally  are  differentiated  by functionality  and performance  factors which  include  integration of 
higher levels of functionality onto a single chip, greater precision, higher speed and lower heat and noise. There are several 
key factors that distinguish analog and mixed-signal IC markets, and in particular the high performance portion of the analog 
and mixed signal IC market, from digital IC markets. These factors include longer product life cycles, numerous market 
segments,  technology  that  is  difficult  to  replicate,  relative  complexity  of  design  and  process  technology,  importance  of 
experienced design engineers, lower capital requirements and diversity of end markets.  We have, however, targeted product 
and market areas that we believe have the ability to offer above average industry growth over the long term. 

Acquisition 

In July 2014, we completed the acquisition of Sensima Technology SA (“Sensima”), a company based in Switzerland that 
develops magnetic sensors for angle measurement as well as three-dimensional magnetic field sensing. Sensima’s products 
are based on Hall devices that are directly integrated with the signal treatment and instantaneously detect and deliver the 
angle value in digital format. Their angle sensors are used in rotary encoders, electronically commutated motors and a broad 
range of products. By combining Sensima’s real time precision magnetic angle sensing with our technologies, we expect to 
create new opportunities with customers by offering enhanced solutions in power management for key industries such as 
automotive, industrial and cloud computing.  

For a detailed discussion of the terms of the acquisition, please refer to Note 2 to our consolidated financial statements under 
Item 8 of this Annual Report on Form 10-K. 

 Products and Applications 

We  currently  have  two  primary  product  families  that  address  multiple  applications  within  the  storage  and  computing, 
consumer electronics, communications, and industrial/automotive markets. Our products are differentiated with respect to 
their high degree of integration and strong levels of accuracy and efficiency, making them cost-effective relative to many 
competing solutions. These product families include: 

Direct  Current  (DC)  to  DC  Products.  DC  to  DC  ICs  are  used  to  convert  and  control  voltages  within  a  broad  range  of 
electronic  systems,  such  as  portable  electronic  devices,  wireless  LAN  access  points,  computers,  set  top  boxes,  TVs  and 
monitors,  automobiles  and  medical  equipment.  We  believe  that  our  DC  to  DC  products  are  differentiated  in  the  market, 
particularly with respect to their high degree of integration, high voltage operation, high load current, high switching speed 
and small footprint. These features are important to our customers as they result in fewer components, a smaller form factor, 
more accurate regulation of voltages, and, ultimately, lower system cost and increased reliability through the elimination of 
many discrete components and power devices. The DC to DC product family accounted for 90%, 89% and 88% of our total 
revenue in 2014, 2013 and 2012, respectively.     

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Lighting  Control  Products  and  AC/DC  Offline  Solutions.    Lighting  control  ICs  are  used  in  backlighting  and  general 
illumination products. Lighting control ICs for backlighting are used in systems that provide the light source for LCD panels 
typically found in notebook computers, LCD monitors, car navigation systems, and LCD televisions. Backlighting solutions 
are typically either white light emitting diode (WLED) lighting sources or cold cathode fluorescent lamps (CCFL). WLED 
lighting control ICs step-up or step-down a DC voltage, or convert from an AC line voltage supplied by the utility company 
(also called AC/DC Offline) and provide efficient precision power and protection to a LED string or to multiple LED strings. 
The CCFL ICs function by converting low-voltage direct current (DC) or battery voltage to high-voltage alternating current 
(AC).  We  believe  our  CCFL  ICs  were  the  first  to  utilize  a  full  bridge  resonant  topology  that  allows  for  high  efficiency, 
extended lifetimes for CCFLs, and lower signal interference with adjacent components. The full bridge topology is now the 
industry standard for these products. The Lighting Control product family accounted for 10%, 11% and 12% of our total 
revenue in 2014, 2013 and 2012, respectively. 

In  addition  to  AC/DC  offline  solutions  for  lighting  illumination  applications,  we  also  offer  AC/DC  power  conversion 
solutions for a diverse number of end products that plug into a wall outlet.  

We  currently  target  our  products  at  the  consumer  electronics,  communications,  storage  and  computing,  and  industrial 
markets, with the consumer electronics market representing the largest portion of our revenue. 

The  following  is  a  brief  summary  of  our  product  family  for  various  applications.  For  each  of  these  applications,  we  are 
currently  shipping  products  or  have  design  wins,  which  are  decisions  by  original  equipment  manufacturers  (OEMs)  or 
original design manufacturers (ODMs) to use our ICs:  

WLED 
Lighting  
Illumination 
(non- 
backlight) 

LCD  
Backlight 
(Inverters 
or WLED)

DC to DC  
Converters 
(Buck &  
Boost)

µP Reset &  
Supervisory

Audio  
Amplifiers

AC/DC 
Offline 

Chargers
(Switching 
& Linear)

Current 
Limit  
Switches

Applications 
Storage and Computing 

Computers  
LCD Monitors 
Disk Drives/ Storage 
Networks 

Consumer Electronics 

Set Top Boxes 
Blu-Ray & DVD 
Players 
Digital Still Cameras 
Commercial & 
Industrial Bulb & CFL 
Replacement 
GPS and Infotainment 
systems 

Communications 

Cellular Handsets 
Networking 
Infrastructure 
VOIP 
Wireless Access Points    

Industrial 

X 

X 

X 

Automotive 
Industrial Applications     

X 

X 
X 

X 

X 

X 
X 

X 
X 

X 

X 

X 
X 

X 

X 

X 

X 
X 
X 

X 
X 

X 
X 

X 

X 

X 
X 

X 

X 
X 
X 

X 
X 

X 
X 

X 

X 
X 

X 

X 

X 

X 
X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 

X 
X 

We derive a majority of our revenue from our DC to DC IC product family sold to the consumer electronics, communications, 
storage and computing and industrial markets.  In the future, we will continue to introduce additional new products within 
our existing product families, such as high current, high voltage, small form factor switching voltage regulators, as well as 
expand our newer product families in battery chargers, voltage references and low dropout regulators. Our ability to achieve 
revenue growth will depend in part upon our ability to enter new market segments, gain market share, grow in regions outside 
of China, Taiwan and other Asian markets, expand our customer base and successfully secure manufacturing capacity. 

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For a detailed discussion of our revenue by product family, please refer to Note 16 to our consolidated financial statements 
under Item 8 of this Annual Report on Form 10-K. 

Customers, Sales and Marketing 

We sell our products through third party distributors, value-added resellers and directly to OEMs, ODMs, and electronic 
manufacturing service (EMS) providers. Our third party distributors are subject to distribution agreements with us which 
allow the distributor to sell our products to end customers and other resellers.  Distributors may distribute our products to end 
customers which include OEMs, ODMs or EMS providers.  Our value-added resellers may second source our products and 
provide other services to customers. ODMs typically design and manufacture electronic products on behalf of OEMs, and 
EMS providers typically provide manufacturing services for OEMs and other electronic product suppliers.    

Sales to our largest distributor accounted for approximately 26% of revenue in 2014, 32% of revenue in 2013 and 32% of 
revenue in 2012. In addition, one other distributor accounted for 10% of revenue in 2013. No other customers accounted for 
more than 10% of revenue in any periods presented. 

Current  distribution  agreements  with  several  of  our  major  distributors  provide  that  each  distributor  shall  have  the  non-
exclusive right to sell and use its best efforts to promote and develop a market for our products. These agreements provide 
that payment for purchases from us will generally occur within 30 to 45 days from the date of invoice.  In addition, we allow 
for limited stock rotation in certain agreements. 

We have sales offices located in the United States, Taiwan, China, Korea and Japan and have marketing representatives in 
Europe and Singapore. Our products typically require a highly technical sales and applications engineering effort where we 
assist our customers in the design and use of our products in their application.  We maintain a staff of applications engineers 
who work directly with our customers’ engineers in the development of their systems’ electronics containing our products. 

Because our sales are billed and payable in United States dollars, our sales are not directly subject to fluctuating currency 
exchange rates. However, because a majority of our revenue is attributable to direct or indirect sales to customers in Asia, 
changes in the relative value of the dollar may create pricing pressures for our products. For the years ended December 31, 
2014, 2013 and 2012, approximately 91%, 90% and 89% of our revenue was from customers in Asia, respectively. 

Our sales are made primarily pursuant to standard individual purchase orders. Our backlog consists of orders that we have 
received from customers which have not yet shipped. Our manufacturing lead times are generally 4 to 12 weeks and we often 
build inventory in advance of customer orders based on our forecast of future customer orders. This subjects us to certain 
risks, most notably the possibility that sales will not meet our forecast, which could lead to inventories in excess of demand. 
If excess inventory exists, it may be necessary for us to sell  it at a substantial discount, take a significant write-down or 
dispose of it altogether, either of which would negatively affect our profit margins. 

We operate in the cyclical semiconductor industry where there is seasonal demand for certain of our products. While we are 
not and will not be immune from current and future industry downturns, we have targeted product and market areas that we 
believe have the ability to offer above average industry performance over the long term. 

Research and Development 

We have assembled a qualified team of engineers in the United States and China with core competencies in analog and mixed-
signal design. Through our research and development efforts, we have developed a collection of intellectual property and 
know-how that we are able to leverage across our products and markets. These include the development of high efficiency 
power  devices,  the  design  of  precision  analog  circuits,  expertise  in  mixed-signal  integration  and  the  development  of 
proprietary semiconductor process technologies. 

Our  research  and  development  efforts  are  generally  targeted  at  three  areas:  systems  architecture,  circuit  design  and 
implementation,  and  process  technology.  In  the  area  of  systems  architecture,  we  are  exploring  new  ways  of  solving  our 
customers’  system  design  challenges  and  are  investing  in  the  development  of  systems  expertise  in  new  markets  and 
applications that align well with our core capabilities. In the area of circuit design and implementation, our initiatives include 
expanding  our  portfolio  of  products  and  adding  new  features  to  our  products.  In  the  area  of  process  technology,  we  are 
investing research and development resources to provide leading-edge analog power processes for our next generation of 
integrated circuits. Process technology is a key strategic component to our future growth.  

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Our research and development expenses totaled $58.6 million, $49.7 million and $48.8 million for the years ended December 
31, 2014, 2013 and 2012, respectively.  

Patents and Intellectual Property Matters 

We  rely  on  our  proprietary  technologies,  which  include  both  our  proprietary  circuit  designs  for  our  products  and  our 
proprietary manufacturing process technologies. Our future success and competitive position depend in part upon our ability 
to obtain and maintain protection of our proprietary technologies. 

In  general,  we  have  elected  to  pursue  patent  protection  for  aspects  of  our  circuit  and  device  designs  that  we  believe  are 
patentable and to protect our manufacturing process technologies by maintaining those process technologies as trade secrets. 
As of December 31, 2014, we had approximately 1,172 patents/applications issued or pending, of which 223 patents have 
been issued in the United States. Our issued patents are scheduled to expire at various times through December 2034. Our 
patents  are  material  to  our  business,  but  we  do  not  rely  on  any  one  particular  patent  for  our  success.  We  also  rely  on  a 
combination  of  nondisclosure  agreements  and  other  contractual  provisions,  as  well  as  our  employees’  commitment  to 
confidentiality  and  loyalty,  to  protect  our  technology,  know-how,  and  processes.  We  also  seek  to  register  certain  of  our 
trademarks as we deem appropriate. We have not registered any of our copyrights and do not believe registration of copyrights 
is material to our business. Despite precautions that we take, it may be possible for unauthorized third parties to copy aspects 
of our current or future technology or products or to obtain and use information that we regard as proprietary. There can be 
no assurance that the steps we take will be adequate to protect our proprietary rights, that our patent applications will lead to 
issued patents, that others will not develop or patent similar or superior products or technologies, or that our patents will not 
be challenged, invalidated, or circumvented by others. Furthermore, the laws of the countries in which our products are or 
may be developed, manufactured or sold may not protect our products and intellectual property rights to the same extent as 
laws in the United States. Our failure to adequately protect our proprietary technologies could materially harm our business. 

The semiconductor industry is characterized by frequent claims of infringement and litigation regarding patent and other 
intellectual property rights. For a more complete description of our legal matters, please read Note 13 to our consolidated 
financial statements. Patent infringement is an ongoing risk, in part because other companies in our industry could have patent 
rights  that  may  not  be  identifiable  when  we  initiate  development  efforts.  Litigation  may  be  necessary  to  enforce  our 
intellectual property rights, and we may have to defend ourselves against infringement claims. Any such litigation could be 
very costly and may divert our management resources. Further, we have agreed to indemnify certain of our customers and 
suppliers in some circumstances against liability from infringement by our products. In the event any third party were to 
make an infringement claim against us or our customers, we could be enjoined from selling selected products or could be 
required to indemnify our customers or suppliers or pay royalties or other damages to third parties. If any of our products is 
found to infringe and we are unable to obtain necessary licenses or other rights on acceptable terms, we would either have to 
change our product so that it does not infringe or stop making the infringing product, which could have a material adverse 
effect on our operating results, financial condition and cash flows. 

Manufacturing 

We utilize a fabless business model, working with third parties to manufacture and assemble our integrated circuits. This 
fabless approach allows us to focus our engineering and design resources on our strengths and to reduce our fixed costs and 
capital expenditures. In contrast to many fabless semiconductor companies, who utilize standard process technologies and 
design rules established by their foundry partners, we have developed our own proprietary process technology and collaborate 
with our foundry partners to install our technology on their equipment in their facilities for use solely on our behalf. This 
close  collaboration  and  control  over  the  manufacturing  process  has  historically  resulted  in  favorable  yields  and  product 
performance for our integrated circuits. 

We currently contract with three suppliers to manufacture our wafers in foundries located in China. Once our silicon wafers 
have been produced, they are shipped to our facility in Chengdu, China for wafer sort. Our semiconductor products are then 
assembled and packaged by independent subcontractors in China and Malaysia. The assembled ICs are then sent for final 
testing primarily at our Chengdu facility prior to shipping to our customers. 

In September 2004, we entered into a lease arrangement for our manufacturing facility located in Chengdu, China. We have 
the option to acquire the facility for approximately $1.6 million which consists of total construction costs minus total rent 
paid by us during the lease term. This option became exercisable in March 2011. We may exercise our purchase option and 
enter into a purchase agreement for this facility in the future. The facility has been fully operational since 2006 and we have 
benefitted from shorter manufacturing cycle times and lower labor and overhead costs. We have expanded our product testing 

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capabilities in our China facility and are able to take advantage of the rich pool of local engineering talent to expand our 
manufacturing support and engineering operations.  

In addition, we constructed a 150,000 square-foot research and development facility in Chengdu, China which was put into 
operation in October 2010. 

Key Personnel and Employees 

Our performance is substantially dependent on the performance of our executive officers and key employees. Due to the 
relative complexity of the design of our analog and mixed-signal ICs, our engineers generally have more years of experience 
and greater circuit design aptitude than the more prevalent digital circuit design engineer. Analog engineers with advanced 
skills are limited in number and difficult to replace. The loss of the services of key officers, managers, engineers and other 
technical personnel would materially harm our business. Our future success will depend, in part, on our ability to attract, 
train, retain, and motivate highly qualified technical and managerial personnel.  We may not be successful in attracting and 
retaining such personnel. Our employees are not represented by a collective bargaining organization, and we have never 
experienced a work stoppage or strike. Our management considers employee relations to be good. As of December 31, 2014, 
we employed 1,178 employees located in the United States, Taiwan, China, Japan, Korea, Europe and Singapore. 

Competition 

The analog and mixed-signal semiconductor industry is highly competitive, and we expect competitive pressures to continue. 
Our  ability  to  compete  effectively  and  to  expand  our  business  will  depend  on  our  ability  to  continue  to  recruit  both 
applications engineering and design engineering personnel, our ability to introduce new products, and our ability to maintain 
the rate at which we introduce these new products. Our industry is characterized by decreasing unit selling prices over the 
life of a product. We compete with domestic and international semiconductor companies, many of which have substantially 
greater financial and other resources with which to pursue engineering, manufacturing, marketing, and distribution of their 
products.  We  are  in  direct  and  active  competition,  with  respect  to  one  or  more  of  our  product  lines,  with  at  least  10 
manufacturers of such products, of varying size and financial strength. The number of our competitors has grown due to 
expansion of the market segments in which we participate. We consider our primary competitors to include Analog Devices, 
Fairchild  Semiconductor,  International  Rectifier,  Intersil  Corporation,  Linear  Technology,  Maxim  Integrated  Products, 
Micrel  Inc.,  Microchip  Technology,  Microsemi  Corporation,  O2  Micro  International,  ON  Semiconductor,  Power 
Integrations, Inc., Richtek Technology Corporation, Rohm Co., Ltd., Semtech Corporation, STMicroelectronics N.V., and 
Texas Instruments Incorporated. 

We expect continued competition from existing competitors as well as competition from new entrants into the semiconductor 
market. We believe that we are competitive in the markets in which we sell, particularly because our ICs typically are smaller 
in  size,  are  highly  integrated,  possess  higher  levels  of  power  management  functionalities  and  achieve  high  performance 
specifications at lower price points than most of our competition. However, we cannot assure you that our products will 
continue to compete favorably or that we will be successful in the face of increasing competition from new products and 
enhancements introduced by existing competitors or new companies entering this market. 

Geographical and Segment Information 

Please refer to the geographical and segment information for each of the last three fiscal years in Note 16 to our consolidated 
financial statements. 

Please refer to the discussion of risks related to our foreign operations in the section entitled “Item 1A: Risk Factors.” 

Available Information 

We were incorporated in California in 1997 and reincorporated in Delaware in November 2004. Our executive offices are 
located at 79 Great Oaks Boulevard, San Jose CA 95119. Our telephone number is (408) 826-0600. Our e-mail address is 
investors@monolithicpower.com,  and  our  website  is  www.monolithicpower.com.  Our  Annual  Reports  on  Form  10-K, 
Quarterly  Reports  on  Form  10-Q,  current  reports  on  Form  8-K,  and  amendments  to  those  filed  or  furnished  pursuant  to 
Sections  13(a)  or  15(d)  of  the  Securities  Exchange  Act  of  1934,  as  amended,  are  available  free  of  charge.  They  may  be 
obtained from our website as soon as reasonably practicable after we electronically file such material with, or furnish it to, 
the Securities and Exchange Commission, or at the SEC website at www.sec.gov. Information contained on our website is 
not a part of this Annual Report on Form 10-K. 

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Executive Officers of the Registrant 

Information regarding our executive officers as of February 28, 2015 is as follows: 

Name 
Michael R. Hsing ............    
Meera P. Rao ...................    
Deming Xiao ...................    
Maurice Sciammas ..........    
Saria Tseng ......................  

   Age 
55 
54 
52 
55 
44 

Position

  President, CEO and Director 
  CFO and Principal Financial and Accounting Officer 
  President of Asia Operations 
  Senior Vice President of Worldwide Sales and Marketing 
Vice President, Strategic Corporate Development, General Counsel and Corporate 
Secretary 

Michael R. Hsing has served on our board of directors and has served as our President and Chief Executive Officer since 
founding  MPS  in  August  1997.  Before  founding  MPS,  Mr.  Hsing  held  senior  technical  positions  at  companies  such  as 
Supertex, Inc. and Micrel, Inc. Mr. Hsing is an inventor on numerous patents related to the process development of bipolar 
mixed-signal semiconductor manufacturing. Mr. Hsing holds a B.S.E.E. from the University of Florida. 

Meera P. Rao has served as our Chief Financial Officer since January 2011. Ms. Rao joined us in January 2009 and served 
as our Vice President of Finance and Corporate Controller. Prior to joining MPS, she was the principal in her own consulting 
practice,  working  with  various  semiconductor  companies,  including  MPS,  where  she  set  up  our  business  operations  in 
Chengdu, China in 2006.  Ms. Rao has more than 20 years of experience with semiconductor and high technology companies 
and has held various senior executive positions, including CFO of Integration Associates, Vice President of Finance and 
Interim CFO at Atrica, Vice President of Finance at Raza Foundries, Corporate Controller and Interim CFO at nVIDIA, as 
well as various positions at Advanced Micro Devices.  Ms. Rao is a CPA and holds an MBA from the University of Rochester. 

Maurice Sciammas has served as our Senior Vice President of Worldwide Sales and Marketing since 2007. Mr. Sciammas 
joined MPS in July 1999 and served as Vice President of Products and Vice President of Sales (excluding greater China) 
until he was appointed to his current position.  Before joining MPS, he was Director of IC Products at Supertex from 1990 
to 1999. He has also held positions at Micrel, Inc. He holds a B.S.E.E. degree from San Jose State University. 

Deming Xiao has served as our President of Asia Operations since January 2008. Since joining us in May 2001, Mr. Xiao has 
held several executive positions, including Foundry Manager and Senior Vice President of Operations. Before joining us, 
from June 2000 to May 2001, Mr. Xiao was Engineering Account Manager at Chartered Semiconductor Manufacturing, Inc. 
Prior to that, Mr. Xiao spent six years as the Manager of Process Integration Engineering at Fairchild Imaging Sensors. Mr. 
Xiao holds a B.S. in Semiconductor Physics from Sichuan University, Chengdu, China and an M.S.E.E. from Wayne State 
University. 

Saria Tseng has served as our Vice President, General Counsel and Corporate Secretary since 2004 and additionally as our 
Vice President, Strategic Corporate Development since 2009. Ms. Tseng joined MPS from MaXXan Systems, Inc. where she 
was Vice President and General Counsel from 2001 to 2004. Previously, Ms. Tseng was an attorney at Gray Cary Ware & 
Freidenrich, LLP and Jones, Day, Reavis & Pogue.  Ms. Tseng is a member of the state bar in both California and New York 
and  is  a  member  of  the  bar  association  of  the  Republic  of  China  (Taiwan).  She  holds  Masters  of  Law  degrees  from  the 
University of California at Berkeley and the Chinese Culture University in Taipei.     

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ITEM 1A.  RISK FACTORS 

Our business involves risks and uncertainties. You should carefully consider the risks described below, together with all of 
the other information in this Annual Report on Form 10-K and other filings with the Securities and Exchange Commission 
in evaluating our business.  If any of the following risks actually occur, our business, financial condition, operating results, 
and growth prospects would likely be materially and adversely affected.  In such an event, the trading price of our common 
stock could decline, and you could lose all or part of your investment in our common stock. Our past financial performance 
should not be considered to be a reliable indicator of future performance, and investors should not use historical trends to 
anticipate results or trends in future periods.  These risks involve forward-looking statements and our actual results may differ 
substantially from those discussed in these forward-looking statements. 

The future trading price of our common stock could be subject to wide fluctuations in response to a variety of factors. 

The future trading price of our common stock is likely to be highly volatile and could be subject to wide fluctuations in 
response to various factors, many of which are beyond our control, including: 

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our results of operations and financial performance; 

general economic, industry and market conditions worldwide; 

our ability to outperform the market, and outperform at a level that meets or exceeds our investors’ expectations;

whether our forward guidance meets the expectations of our investors; 

the depth and liquidity of the market for our common stock; 

developments generally affecting the semiconductor industry; 

commencement of or developments relating to our involvement in litigation; 

investor perceptions of us and our business strategies; 

changes in securities analysts’ expectations or our failure to meet those expectations; 

actions by institutional or other large stockholders; 

terrorist acts or acts of war; 

actual or anticipated fluctuations in our results of operations; 

actual or anticipated manufacturing capacity limitations; 

developments with respect to intellectual property rights; 

introduction of new products by us or our competitors; 

our sale of common stock or other securities in the future; 

conditions and trends in technology industries; 

our loss of key customers; 

changes in market valuation or earnings of our competitors; 

any mergers, acquisitions or divestitures of assets undertaken by us; 

government debt default; 

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our  ability  to  develop  new  products,  enter  new  market  segments,  gain  market  share,  manage  litigation  risk,
diversify our customer base and successfully secure manufacturing capacity; 

our ability to increase our gross margins;  

market reactions to guidance from other semiconductor companies or third-party research groups;  

our ability to continue the stock repurchase program and pay quarterly cash dividends to stockholders; and 

changes in the estimation of the future size and growth rate of our markets. 

In addition, the stock market often experiences substantial volatility that is seemingly unrelated to the operating performance 
of particular companies. These broad market fluctuations may adversely affect the trading price of our common stock. 

We expect our operating results to fluctuate from quarter to quarter and year to year, which may make it difficult to 
predict our future performance and could cause our stock price to decline and be volatile. 

Our revenue, expenses, and results of operations are difficult to predict, have varied significantly in the past and will continue 
to  fluctuate  significantly  in  the  future  due  to  a  number  of  factors,  many  of  which  are  beyond  our  control.  We  expect 
fluctuations to continue for a number of reasons, including: 

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changes in general demand for electronic products as a result of worldwide macro-economic conditions;  

changes in business conditions at our distributors, value-added resellers and/or end-customers; 

changes in general economic conditions in the countries where our products are sold or used; 

the timing of developments and related expenses in our litigation matters; 

the  loss  of  key  customers  or  our  inability  to  attract  new  customers  due  to  customer  and  prospective  customer
concerns about being litigation targets; 

continued dependence on turns business (orders received and shipped within the same fiscal quarter); 

continued dependence on the Asian markets for our customer base; 

increases in assembly costs due to commodity price increases, such as the price of gold; 

the timing of new product introductions by us and our competitors; 

changes in our revenue mix between OEMs, ODMs, distributors and value-added resellers; 

changes in product mix, product returns, and actual and potential product liability; 

the acceptance of our new products in the marketplace; 

our ability to develop new process technologies and achieve volume production; 

our ability to meet customer product demand in a timely manner; 

the scheduling, rescheduling, or cancellation of orders by our customers; 

the cyclical nature of demand for our customers’ products; 

fluctuations in our estimate for stock rotation reserves; 

our ability to manage our inventory levels, including the levels of inventory held by our distributors; 

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inventory levels and product obsolescence; 

seasonality and variability in the storage and computing, consumer electronics, and communications markets; 

the availability of adequate manufacturing capacity from our outside suppliers; 

increases in prices for finished wafers due to general capacity shortages; 

the potential loss of future business resulting from capacity issues; 

changes in manufacturing yields; 

movements in exchange rates, interest rates or tax rates; and 

accounting charges resulting from equity awards granted to our employees. 

Due to the factors noted above and other risks described in this section, many of which are beyond our control, you should 
not  rely  on  quarter-to-quarter  or  year-over-year  comparisons  to  predict  our  future  financial  performance.  Unfavorable 
changes in any of the above factors may seriously harm our business and results of operations, and may cause our stock price 
to decline and be volatile. 

Our  business  has  been  and  may  continue  to  be  significantly  impacted  by  worldwide  economic  conditions  and 
uncertainty in the outlook for the global economy makes it more likely that our actual results will differ materially 
from expectations. 

In recent years, global credit and financial markets experienced disruptions, and may continue to experience disruptions in 
the  future,  including  diminished  liquidity  and  credit  availability,  declines  in  consumer  confidence,  declines  in  economic 
growth, increases in unemployment rates, and continued uncertainty about economic stability. These economic uncertainties 
affect businesses such as ours in a number of ways, making it difficult to accurately forecast and plan our future business 
activities. The continued or further tightening of credit in financial markets may lead consumers and businesses to postpone 
spending, which may cause our customers to cancel, decrease or delay their existing and future orders with us. In addition, 
financial difficulties experienced by our suppliers or distributors could result in product delays, increased accounts receivable 
defaults and inventory challenges. Volatility in the credit markets could severely diminish liquidity and capital availability. 
Demand for consumer electronics is a function of the health of the economies in the United States, Europe, China and the 
rest of the world. We cannot predict the timing, strength or duration of any economic disruption or subsequent economic 
recovery, worldwide, in the United States, in our industry, or in the consumer electronics market. These and other economic 
factors have had and may continue to have a material adverse effect on demand for our products and on our financial condition 
and operating results. 

We may not be profitable on a quarterly or annual basis. 

Our profitability is dependent on many factors, including: 

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our sales, which because of our turns business (i.e., orders received and shipped within the same fiscal quarter),
are difficult to accurately forecast; 

the  cancellation  or  rescheduling  of  our  customers’  orders,  which  may  occur  without  significant  penalty  to  our
customers; 

changes in general demand for electronic products as a result of worldwide macro-economic conditions; 

changes in revenue mix between OEMs, ODMs, distributors and value-added resellers; 

changes in product mix and actual and potential product liability; 

changes in revenue mix between end market segments (i.e. communication, storage and computing, consumer and
industrial); 

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our competition, which could adversely impact our selling prices and our potential sales; 

our manufacturing costs, including our ability to negotiate with our vendors and our ability to efficiently run our
test facility in China; 

manufacturing capacity constraints; 

settlements of tax audits; 

stock-based compensation accounting charges; and 

our  operating  expenses,  including  general  and  administrative  expenses,  selling  and  marketing  expenses,  and
research and development expenses relating to products that will not be introduced and will not generate revenue
until later periods, if at all. 

We may not achieve profitability on a quarterly or annual basis in the future. Unfavorable changes in our operations, including 
any of the factors noted above, may have a material adverse effect on our quarterly or annual profitability. 

We may not experience growth rates comparable to past years. 

In  the past,  our  revenue  increased  significantly  in  certain years  due  to  increased  sales  of  certain of our products. Due  to 
various factors, including increased competition, loss of certain of our customers, unfavorable changes in our operations, 
reduced global electronics demand, end-customer market downturn, market acceptance and penetration of our current and 
future  products  and  ongoing  litigation,  we  may  not  experience  growth  rates  comparable  to  past  periods,  which  could 
materially and adversely affect our stock price and results of operations. 

We may be unsuccessful in developing and selling new products with margins similar to or better than what we have 
experienced in the past, which would impact our overall gross margin and financial performance. 

Our success depends on products that are differentiated in the market, which result in gross margins that have historically 
been  above  industry  averages.  Should  we  fail  to  improve  our  gross  margin  in  the  future,  and  accordingly  develop  and 
introduce  sufficiently  differentiated  products  that  result  in  higher  gross  margins  than  industry  averages,  our  financial 
condition and results of operations could be materially and adversely affected.  

The highly cyclical nature of the semiconductor industry, which has produced significant and sometimes prolonged 
downturns, could materially adversely affect our operating results, financial condition and cash flows. 

Historically, the semiconductor industry has been highly cyclical and, at various times, has experienced significant downturns 
and wide  fluctuations  in  supply  and  demand.  These  conditions have caused significant  variances  in product demand  and 
production capacity, as well as rapid erosion of average selling prices. The industry may experience severe or prolonged 
downturns in the future, which could result in downward pressure on the price of our products as well as lower demand for 
our products. Because significant portions of our expenses are fixed in the short term or incurred in advance of anticipated 
sales, we may not be able to decrease our expenses in a timely manner to offset any sales shortfall. These conditions could 
have a material adverse effect on our operating results, financial condition and cash flows. 

If demand for our products declines in the major end markets that we serve, our revenue will decrease and our results 
of operations and financial condition would be materially and adversely affected. 

We  believe  that  the  application  of  our  products  in  the  storage  and  computer,  consumer  electronics,  communications  and 
industrial markets will continue to account for the majority of our revenue. If the demand for our products declines in the 
major end markets that we serve, our revenue will decrease and our results of operations and financial condition would be 
materially and adversely affected. In addition, as technology evolves, the ability to integrate the functionalities of various 
components, including our discrete semiconductor products, onto a single chip and/or onto other components of systems 
containing our products increases. Should our customers require integrated solutions that we do not offer, demand for our 
products could decrease, and our business and results of operations would be materially and adversely affected. 

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We may be unsuccessful in developing and selling new products or in penetrating new markets required to maintain 
or expand our business. 

Our competitiveness and future success depend on our ability to design, develop, manufacture, assemble, test, market, and 
support new products and enhancements on a timely and cost-effective basis. A fundamental shift in technologies in any of 
our product markets could have a material adverse effect on our competitive position within these markets. Our failure to 
timely  develop  new  technologies  or  to  react  quickly  to  changes  in  existing  technologies  could  materially  delay  our 
development of new products, which could result in product obsolescence, decreased revenue, and/or a loss of market share 
to competitors. 

As we develop new product lines, we must adapt to market conditions that are unfamiliar to us, such as competitors and 
distribution channels that are different from those we have known in the past. Some of our new product lines require us to 
re-equip our labs to test parameters we have not tested in the past. If we are unable to adapt rapidly to these new and additional 
conditions, we may not be able to successfully penetrate new markets. 

The  success  of  a  new  product  depends  on  accurate  forecasts  of  long-term  market  demand  and  future  technological 
developments, as well as on a variety of specific implementation factors, including: 

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timely and efficient completion of process design and device structure improvements; 

timely and efficient implementation of manufacturing, assembly, and test processes; 

the ability to secure and effectively utilize fabrication capacity in different geometries; 

product performance; 

product availability; 

product quality and reliability; and 

effective marketing, sales and service. 

To the extent that we fail to timely introduce new products or to quickly penetrate new markets, our revenue and financial 
condition could be materially adversely affected. 

We derive most of our revenue from direct or indirect sales to customers in Asia and have significant operations in 
Asia, which may expose us to political, cultural, regulatory, economic, foreign exchange, and operational risks. 

We derive most of our revenue from customers located in Asia through direct sales or indirect sales through distribution 
arrangements and value-added reseller agreements with parties located in Asia. As a result, we are subject to increased risks 
due to this geographic concentration of business and operations. For the year ended December 31, 2014, approximately 91% 
of our revenue was from customers in Asia. There are risks inherent in doing business in Asia, and internationally in general, 
including: 

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changes in, or impositions of, legislative or regulatory requirements, including tax laws in the United States and
in the countries in which we manufacture or sell our products; 

trade restrictions, including restrictions imposed by the United States on trading with parties in foreign countries;

currency exchange rate fluctuations impacting intra-company transactions; 

transportation delays; 

changes in tax regulations in China that may impact our tax status in Chengdu; 

multi-tiered distribution channels that lack visibility to end customer pricing and purchase patterns; 

international political relationships and threats of war; 

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terrorism and threats of terrorism; 

epidemics and illnesses; 

work stoppages and infrastructure problems due to adverse weather conditions or natural disasters; 

work stoppages related to employee dissatisfaction; 

economic, social and political instability; 

changes in import/export regulations, tariffs, and freight rates; 

longer accounts receivable collection cycles and difficulties in collecting accounts receivables; 

enforcing contracts generally; and 

less effective protection of intellectual property and contractual arrangements. 

If  we  fail  to  expand  our  customer  base  and  significantly  reduce  the  geographic  concentration  of  our  customers,  we  will 
continue to be subject to the foregoing risks, which could materially and adversely affect our revenue and financial condition. 

We depend on a limited number of customers for a significant percentage of our revenue. 

Historically, we have generated most of our revenue from a limited number of customers. For example, sales to our largest 
distributor accounted for approximately 26% of our total revenue for the year ended December 31, 2014. We continue to rely 
on a limited number of customers for a significant portion of our revenue. Because we rely on a limited number of customers 
for significant percentages of our revenue, a decrease in demand for our products from any of our major customers for any 
reason (including due to market conditions, catastrophic events or otherwise) could have a materially adverse impact on our 
financial conditions and results of operations. 

We are subject to anti-corruption laws in the jurisdictions in which we operate, including the U.S. Foreign Corrupt 
Practices Act, or the FCPA. Our failure to comply with these laws could result in penalties which could harm our 
reputation and have a material adverse effect on our business, results of operations and financial condition. 

 We are subject to the FCPA, which generally prohibits companies and their intermediaries from making improper payments 
to foreign officials for the purpose of obtaining or keeping business and/or other benefits, along with various other anti-
corruption laws. Although we have implemented policies and procedures designed to ensure that we, our employees and 
other intermediaries comply with the FCPA and other anti-corruption laws to which we are subject, there is no assurance that 
such policies or procedures will work effectively all of the time or protect us against liability under the FCPA or other laws 
for actions  taken  by  our  employees  and other  intermediaries with  respect  to our  business or  any businesses  that we  may 
acquire. We have significant operations in Asia, which places us in frequent contact with persons who may be considered 
“foreign officials” under the FCPA, resulting in an elevated risk of potential FCPA violations. If we are not in compliance 
with the FCPA and other laws governing the conduct of business with government entities (including local laws), we may be 
subject to criminal and civil penalties and other remedial measures, which could have an adverse impact on our business, 
financial condition, results of operations and liquidity. Any investigation of any potential violations of the FCPA or other 
anti-corruption laws by U.S. or foreign authorities could harm our reputation and have an adverse impact on our business, 
financial condition and results of operations. 

We  receive  a  significant  portion  of  our  revenue  from  distribution  arrangements,  value-added  resellers  and  direct 
customers, and the loss of any one of these distributors, value-added resellers or direct customers or failure to collect 
a receivable from them could adversely affect our operations and financial position. 

We  market  our  products  through  distribution  arrangements  and  value-added  resellers  and  through  our  direct  sales  and 
applications support organization to customers that include OEMs, ODMs and EMSs. Receivables from our customers are 
generally not secured by any type of collateral and are subject to the risk of being uncollectible. Sales to our largest distributor 
accounted for approximately 26% of our total revenue for the year ended December 31, 2014. Significant deterioration in the 
liquidity or financial condition of any of our major customers or any group of our customers could have a material adverse  

12 

   
  
   
   
   
  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
   
  
  
  
 
impact on the collectability of our accounts receivable and our future operating results. We primarily conduct our sales on a 
purchase order basis, and we do not have any long-term supply commitments. 

Moreover, we believe a high percentage of our products are eventually sold to a number of OEMs. Although we communicate 
with OEMs in an attempt to achieve “design wins,” which are decisions by OEMs and/or ODMs to incorporate our products, 
we do not have purchase commitments from these end users. Therefore, there can be no assurance that the OEMs and/or 
ODMs will continue to incorporate our ICs into their products. OEM technical specifications and requirements can change 
rapidly, and we may not have products that fit new specifications from an end-customer for whom we have had previous 
design wins. We cannot be certain that we will continue to achieve design wins from large OEMs, that our direct customers 
will  continue  to  be  successful  in  selling  to  the  OEMs,  or  that  the  OEMs  will  be  successful  in  selling  products  which 
incorporate our ICs. The loss of any significant customer, any material reduction in orders by any of our significant customers 
or by their OEM customers, the cancellation of a significant customer order, or the cancellation or delay of a customer’s or 
OEM’s significant program or product could reduce our revenue and adversely affect our results of operations and financial 
condition.  

Due to the nature of our business as a component supplier, we may have difficulty both in accurately predicting our 
future revenue and appropriately managing our expenses. 

Because we provide components for end products and systems, demand for our products is influenced by our customers’ end 
product demand. As a result, we may have difficulty in accurately forecasting our revenue and expenses. Our revenue depends 
on the timing, size, and speed of commercial introductions of end products and systems that incorporate our products, all of 
which are inherently difficult to forecast, as well as the ongoing demand for previously introduced end products and systems. 
In  addition,  demand  for  our  products  is  influenced  by  our  customers’  ability  to  manage  their  inventory.  Our  sales  to 
distributors are subject to higher volatility because they service demand from multiple levels of the supply chain which, in 
itself, is inherently difficult to forecast. If our customers, including distributors, do not manage their inventory correctly or 
misjudge their customers’ demand, our shipments to and orders from our customers may vary significantly on a quarterly 
basis. 

Our ability to increase product sales and revenue may be constrained by the manufacturing capacity of our suppliers. 

Although we provide our suppliers with rolling forecasts of our production requirements, their ability to provide wafers to us 
is  limited  by  the  available  capacity,  particularly  capacity  in  the  geometries  we  require,  at  the  facilities  in  which  they 
manufacture wafers for us.  As a result, this lack of capacity has at times constrained our product sales and revenue growth.  In 
addition, an increased need for capacity to meet internal demands or demands of other customers could cause our suppliers 
to reduce capacity available to us. Our suppliers may also require us to pay amounts in excess of contracted or anticipated 
amounts for wafer deliveries or require us to make other concessions in order to acquire the wafer supply necessary to meet 
our customer requirements. If our suppliers extend lead times, limit supplies or the types of capacity we require, or increase 
prices due to capacity constraints or other factors, our revenue and gross margin may materially decline.  In addition, if we 
experience  supply  delays  or  limitations,  our  customers  may  reduce  their  purchase  levels  with  us  and/or  seek  alternative 
solutions to meet their demand, which could materially and adversely impact our business and results of operations.  

We currently depend on third-party suppliers to provide us with wafers for our products. If any of our wafer suppliers 
become insolvent or capacity constrained and are unable and/or fail to provide us sufficient wafers at acceptable yields 
and at anticipated costs, our revenue and gross margin may decline or we may not be able to fulfill our customer 
orders. 

We  have  a  supply  arrangement  with  certain  suppliers  for  the  production  of  wafers.  Should  any  of  our  suppliers  become 
insolvent or capacity constrained, we may not be able to fulfill our customer orders, which would likely cause a decline in 
our revenue. 

While certain aspects of our relationship with these suppliers are contractual, many important aspects of this relationship 
depend on our suppliers’ continued cooperation and our management of relationships. In addition, the fabrication of ICs is 
a highly complex and precise process. Problems in the fabrication process can cause a substantial percentage of wafers to 
be rejected or numerous ICs on each wafer to be non-functional. This could potentially reduce yields. The failure of our 
suppliers to supply us wafers at acceptable yields could prevent us from fulfilling our customer orders for our products and 
would likely cause a decline in our revenue.   

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Further,  as  is common  in  the  semiconductor  industry, our  customers  may  reschedule or  cancel  orders on relatively  short 
notice. If our customers cancel orders after we submit a committed forecast to our suppliers for the corresponding wafers, we 
may be required to purchase wafers that we may not be able to resell, which would adversely affect our operating results, 
financial condition, and cash flows. 

We  might  not  be  able  to  deliver  our  products  on  a  timely  basis  if  our  relationships  with  our  assembly  and  test 
subcontractors are disrupted or terminated. 

We do not have direct control over product delivery schedules or product quality because all of our products are assembled 
by third-party subcontractors and a portion of our testing is currently performed by third-party subcontractors. Also, due to 
the amount of time typically required to qualify assembly and test subcontractors, we could experience delays in the shipment 
of our products if we were forced to find alternate third parties to assemble or test our products.  In addition, events such as 
the  recent  global  economic  crisis  may  materially  impact  our  assembly  suppliers’  ability  to  operate.  Any  future  product 
delivery  delays  or  disruptions  in  our  relationships  with  our  subcontractors  could  have  a  material  adverse  effect  on  our 
operating results, financial condition, and cash flows.  

There  may  be  unanticipated  costs  associated  with  adding  to  or  supplementing  our  third-party  suppliers’ 
manufacturing capacity. 

We anticipate that future growth of our business will require increased manufacturing capacity on the part of third-party 
supply foundries, assembly shops, and testing facilities for our products.  In order to facilitate such growth, we may need to 
enter into strategic transactions, investments and other activities. Such activities are subject to a number of risks, including: 

• 

• 

• 

• 

• 

the costs and expense associated with such activities; 

the availability of modern foundries to be developed, acquired, leased or otherwise made available to us or our
third-party suppliers; 

the ability of foundries and our third-party suppliers to obtain the advanced equipment used in the production of
our products; 

delays in bringing new foundry operations online to meet increased product demand; and 

unforeseen  environmental,  engineering  or  manufacturing  qualification  problems  relating  to  existing  or  new
foundry facilities. 

These and other risks may affect the ultimate cost and timing of any expansion of our third-party suppliers’ capacity. 

We purchase inventory in advance based on expected demand for our products, and if demand is not as expected, we 
may have insufficient or excess inventory, which could adversely impact our financial position. 

As a fabless semiconductor company, we purchase our inventory from third party manufacturers in advance of selling our 
product. We place orders with our manufacturers based on existing and expected orders from our customers for particular 
products. While most of our contracts with our customers and distributors include lead time requirements and cancellation 
penalties  that  are  designed  to  protect  us  from  misalignment  between  customer  orders  and  inventory  levels,  we  must 
nonetheless  make  some  predictions  when  we  place  orders  with  our  manufacturers.  In  the  event  that  our  predictions  are 
inaccurate due to unexpected increases in orders or unavailability of product within the timeframe that is required, we may 
have insufficient inventory to meet our customer demands. In the event that we order products that we are unable to sell due 
to a decrease in orders, unexpected order cancellations, injunctions due to patent litigations, or product returns, we may have 
excess inventory which, if not sold, may need to be disposed of or would result in a decrease in our revenue in future periods 
as the excess inventory at our distributors is sold. If any of these situations were to arise, it could have a material impact on 
our business and financial position. 

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The outcome of currently ongoing and future examinations of our income tax returns by the IRS and foreign tax 
authorities could have a material adverse effect on our results of operations. 

We are subject to examination of our income tax returns by the IRS and other tax authorities. Our U.S. Federal income tax 
returns for the years ended December 31, 2005 through December 31, 2007 are under examination by the IRS. In April 2011, 
we received from the IRS a Notice of Proposed Adjustment, or "NOPA", relating to a cost-sharing agreement entered into 
by  us  and  our  international  subsidiaries  on  January  1,  2004.  In  the  NOPA,  the  IRS  objected  to  our  allocation  of  certain 
litigation  expenses  between  us  and  our  international  subsidiaries  and  the  amount  of  "buy-in  payments"  made  by  our 
international subsidiaries to us in connection with the cost-sharing agreement, and proposed to increase our U.S. taxable 
income according to a few alternative methodologies. In February 2012, we received a revised NOPA from the IRS (Revised 
NOPA). In this Revised NOPA, the IRS raised the same issues as in the NOPA issued in April 2011 but under a different 
methodology. Under the Revised NOPA, the largest potential federal income tax payment, if the IRS were to prevail on all 
matters in dispute, is $10.5 million, plus interest and penalties, if any. We responded to the IRS Revised NOPA in May 2012. 
In June 2013, the IRS responded and continued to disagree with our rebuttal. We met with the IRS Office of Appeals in 2014, 
had  additional  discussions  again  in  2015,  and  both  parties  have  been  in  continuous  discussions  for  a  resolution  of  the 
matter.  However, there is no guarantee these discussions will be conclusive. Meanwhile, we agreed to grant the IRS an 
extension of the statute of limitations for taxable years 2005 through 2007 to September 30, 2015.  

The IRS also audited the research and development credits carried forward into year 2005 and the credits generated in the 
years  2005  through  2007.  We  received  a  NOPA  from  the  IRS  in  February  2011,  proposing  to  reduce  the  research  and 
development credits generated in years 2005 through 2007 and the carryforwards, which would then reduce the value of such 
credits carried forward to subsequent tax years. 

We  have  reviewed  and  responded  to  the  above  proposed  adjustments.  We  regularly  assess  the  likelihood  of  an  adverse 
outcome  resulting  from  such  examinations  to  determine  the  adequacy  of  our  provision  for  income  taxes.  Based  on  the 
technical merits of our tax return filing positions and the interactions to date with the IRS, we believe that it is more likely 
than not that the resolution of these audits will not have a material impact on our consolidated financial position and the 
results of operations and cash flows.  

Changes  in  effective  tax  rates  or  adverse  outcomes  resulting  from  examination  of  our  income  tax  returns  could 
adversely affect our results. 

Our future effective tax rates could be adversely affected by earnings being lower than anticipated in countries where we 
have lower statutory rates and higher than anticipated in countries where we have higher statutory rates, by changes in the 
valuation  of  our  deferred  tax  assets  and  liabilities,  or  by  changes  in  tax  laws,  regulations,  accounting  principles  or 
interpretations thereof and discrete items such as future exercises or dispositions of stock options and restricted stock releases. 
In addition, we are subject to the continuous examination of our income tax returns by the IRS and other tax authorities. We 
regularly  assess  the  likelihood  of  adverse  outcomes  resulting  from  these  examinations  to  determine  the  adequacy  of  our 
provision for income taxes. There can be no assurance that the outcomes from these continuous examinations will not have 
an adverse effect on our operating results and financial condition. 

The complexity of calculating our tax provision may result in errors that could result in restatements of our financial 
statements. 

Due to the complexity associated with the calculation of our tax provision, we have hired independent tax advisors to assist 
us in the calculation. If we or our independent tax advisors fail to resolve or fully understand certain issues that we may have 
had in the past and issues that may arise in the future, we could be subject to errors, which would result in us having to restate 
our financial statements. Restatements are generally costly and could adversely impact our results of operations and/or have 
a negative impact on the trading price of our common stock.  

If we are unsuccessful in legal proceedings brought against us or any of our customers, we could be prevented from 
selling many of our products and/or be required to pay substantial damages. An unfavorable outcome or an additional 
award of damages, attorneys’ fees or an injunction could cause our revenue to decline significantly and could severely 
harm our business and operating results. 

From time to time we are party to various legal proceedings. If we are not successful in litigation that could be brought against 
us or our customers, we could be ordered to pay monetary fines and/or damages. If we are found liable for willful patent 
infringement, damages could be significant. We and/or our customers could also be prevented from selling some or all of our 
products. Moreover, our customers and end-users could decide not to use our products, and our products and our customers’ 
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accounts payable to us could be seized. Finally, interim developments in these proceedings could increase the volatility in 
our stock price as the market assesses the impact of such developments on the likelihood that we will or will not ultimately 
prevail in these proceedings. 

Given our inability to control the timing and nature of significant events in our legal proceedings that either have 
arisen or may arise, our legal expenses are difficult to forecast and may vary substantially from our publicly-disclosed 
forecasts  with  respect  to  any  given  quarter,  which  could  contribute  to  increased  volatility  in  our  stock  price  and 
financial condition. 

Historically, we have incurred significant expenses in connection with various legal proceedings that vary with the level of 
activity in the proceeding. It is difficult for us to forecast our legal expenses for any given quarter, which adversely affects 
our ability to forecast our expected results of operations in general. We may also be subject to unanticipated legal proceedings, 
which would result in our incurrence of unexpected legal expenses. If we fail to meet the expectations of securities or industry 
analysts as a result of unexpected changes in our legal expenses, our stock price could be impacted. 

Future legal proceedings may divert our financial and management resources. 

The semiconductor industry is characterized by frequent claims of infringement and litigation regarding patent and other 
intellectual property rights. Patent infringement is an ongoing risk, in part because other companies in our industry could 
have patent rights that may not be identifiable when we initiate development efforts. Litigation may be necessary to enforce 
our intellectual property rights, and we may have to defend ourselves against additional infringement claims. Such litigation 
is very costly. In the event any third party makes a new infringement claim against us or our customers, we could incur 
additional ongoing legal expenses. In addition, in connection with these legal proceedings, we may be required to post bonds 
to defend our intellectual property rights in certain countries for an indefinite period of time, until such dispute is resolved. 
If our legal expenses materially increase or exceed anticipated amounts, our capital resources and financial condition could 
be adversely affected. Further, if we are not successful in any of our intellectual property defenses, our financial condition 
could be adversely affected and our business could be harmed. In addition, our management team may also be required to 
devote a great deal of time, effort and energy to these legal proceedings, which could divert management’s attention from 
focusing on our operations and adversely affect our business. 

We will continue to vigorously defend and enforce our intellectual property rights around the world, especially as it 
relates to patent litigation. 

From  time  to  time,  we  are  faced with having  to  defend  our  intellectual  property rights throughout  the  world. Should  we 
become  engaged  in  such  proceedings,  it  could  divert  management’s  attention  from  focusing  on  and  implementing  our 
business strategy. Further, should we not be successful in any of our intellectual property enforcement actions, our revenue 
may be affected and our business could be harmed. 

Failure to protect our proprietary technologies or maintain the right to certain technologies may negatively affect our 
ability to compete. 

We rely heavily on our proprietary technologies. Our future success and competitive position depend in part upon our ability 
to obtain and maintain protection of certain proprietary technologies used in our products. We pursue patents for some of our 
new products and unique technologies, and we also rely on a combination of nondisclosure agreements and other contractual 
provisions, as well as our employees’ commitment to confidentiality and loyalty, to protect our technology, know-how, and 
processes. Despite the precautions we take, it may be possible for unauthorized third parties to copy aspects of our current or 
future  technologies  or  products  or  to obtain  and use  information  that  we  regard  as proprietary. We intend  to  continue  to 
protect our proprietary technologies, including through patents. However, there can be no assurance that the steps we take 
will be adequate to protect our proprietary rights, that our patent applications will lead to issued patents, that others will not 
develop or patent  similar  or superior products  or  technologies, or  that our  patents will  not be  challenged,  invalidated, or 
circumvented by others. Furthermore, the laws of the countries in which our products are or may be developed, manufactured, 
or sold may not protect our products and intellectual property rights to the same extent as laws in the United States. Our 
failure to adequately protect our proprietary technologies would materially harm our business.  

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The downgrade of the credit rating for U.S. long-term sovereign debt and that of certain Eurozone countries could 
affect global and domestic financial markets, which may affect our business, financial condition and liquidity. 

Although a downgrade of long-term sovereign credit ratings is not unprecedented, a downgrade of the U.S. credit rating is, 
and the potential impact is uncertain. Management will continue to monitor the situation and there could be future changes 
in capital requirements or a rebalancing of investment portfolios in response to management’s assessment of the related risk 
weightings. At this time, however, U.S. treasuries continue to trade in active markets, and the yield curve on U.S. treasuries 
remains an appropriate basis for determining risk-free rates. 

Should there be a deterioration of the global and financial markets as a result of the downgraded credit rating for U.S. long-
term sovereign debt, and that of certain Eurozone countries, our business, financial condition and liquidity could be adversely 
affected. 

The market for government-backed student loan auction-rate securities has suffered a decline in liquidity which may 
impact the liquidity and potential value of our investment portfolio. 

The market for government-backed student loan auction-rate securities with interest rates that reset through a Dutch auction 
every 7 to 35 days became illiquid in 2008. We experienced our first failed auction in mid-February 2008. Since 2008, we 
have  redeemed  87%  of  the  original  portfolio  at  par.  At  December  31,  2014,  $5.6  million  of  our  auction-rate  security 
investments have failed to reset through successful auctions and it is unclear as to when these investments will regain their 
liquidity. The underlying maturity of these auction-rate securities is up to 33 years.  

We  recorded  temporary  and  other-than-temporary  impairment  charges  on  these  investments.  The  valuation  is  subject  to 
fluctuations in the future, which will depend on many factors, including the quality of underlying collateral, estimated time 
for  liquidity  including  potential  to  be  called  or  restructured,  underlying  final  maturity,  insurance  guaranty  and  market 
conditions, among others. 

Should there be further deterioration in the market for auction-rate securities, the value of our portfolio may decline, which 
may have an adverse impact on our cash position and our earnings. If the accounting rules for these securities change, there 
may be an adverse impact on our earnings.  

We face risks in connection with our internal control over financial reporting. 

Effective internal control over financial reporting is necessary for us to provide reliable and accurate financial reports. If we 
cannot provide reliable financial reports or prevent fraud or other financial misconduct, our business and operating results 
could be harmed. Our failure to implement and maintain effective internal control over financial reporting could result in a 
material misstatement of our financial statements or otherwise cause us to fail to meet our financial reporting obligations. 
This, in turn, could result in a loss of investor confidence in the accuracy and completeness of our financial reports, which 
could have an adverse effect on our results of operations and/or have a negative impact on the trading price of our common 
stock, and could subject us to stockholder litigation. In addition, we cannot assure you that we will not in the future identify 
further material weaknesses in our internal control over financial reporting that we have not discovered to date, which may 
impact the reliability of our financial reporting and financial statements. 

Our products must meet specifications, and undetected defects and failures may occur, which may cause customers 
to return or stop buying our products and may expose us to product liability risk. 

Our customers generally establish demanding specifications for quality, performance, and reliability that our products must 
meet.  Integrated  circuits  as  complex  as  ours  often  encounter  development  delays  and  may  contain  undetected  defects  or 
failures when first introduced or after commencement of commercial shipments, which might require product replacement 
or recall. Further, our third-party manufacturing processes or changes thereof, or raw material used in the manufacturing 
processes may cause our products to fail. We have from time to time in the past experienced product quality, performance or 
reliability problems. Our standard warranty period is generally one to two years, which exposes us to significant risks of 
claims for defects and failures. If defects and failures occur in our products, we could experience lost revenue, increased 
costs,  including warranty  expense  and  costs  associated  with  customer  support,  cancellations  or  rescheduling of  orders or 
shipments, and product returns or discounts, any of which would harm our operating results. 

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In addition, product liability claims may be asserted with respect to our technology or products. Although we currently have 
insurance, there can be no assurance that we have obtained a sufficient amount of insurance coverage, that asserted claims 
will be within the scope of coverage of the insurance, or that we will have sufficient resources to satisfy any asserted claims. 

The price and availability of commodities (e.g., gold, copper and silicon) may adversely impact our ability to deliver 
our products in a timely and cost-effective manner and may adversely affect our business and results of operations. 

Our  products  incorporate  commodities  such  as  gold,  copper  and  silicon.  An  increase  in  the  price  or  a  decrease  in  the 
availability of these commodities and similar commodities that we use could negatively impact our business and results of 
operations. 

Fluctuations in the value of the U.S. Dollar relative to other foreign currencies, including the Renminbi, may adversely 
affect results of operations. 

Our manufacturing and packaging suppliers are and will continue to be primarily located in China for the foreseeable future. 
If the value of the Renminbi rises against the U.S. Dollar, there could be an increase in our manufacturing costs relative to 
competitors who have manufacturing facilities located in the U.S., which could adversely affect our operations. In addition, 
because we collect payments from all customers in U.S. dollars, fluctuations in the value of foreign currencies could have an 
adverse impact on our customers’ business, which could negatively impact our business and results of operations. 

We  incur  foreign  currency  exchange gains  or  losses  related  to  the  timing of payments  between  the U.S.  and  our  foreign 
subsidiaries, which are reported in interest and other income. Fluctuations in the value of foreign currencies could increase 
the amount of foreign currency exchange losses we record, which could have an adverse impact on our results of operations. 

We and our manufacturing partners are or will be subject to extensive Chinese government regulation, and the benefit 
of various incentives from Chinese governments that we and our manufacturing partners receive may be reduced or 
eliminated, which could increase our costs or limit our ability to sell products and conduct activities in China. 

Most of our manufacturing partners are located in China. In addition, we have established a facility in China, initially for the 
testing of our ICs. The Chinese government has broad discretion and authority to regulate the technology industry in China. 
China’s government has implemented policies from time to time to regulate economic expansion in China. It also exercises 
significant  control  over  China’s  economic  growth  through  the  allocation  of  resources,  controlling  payment  of  foreign 
currency-denominated obligations, setting monetary policy and providing preferential treatment to particular industries or 
companies.  New  regulations  or  the  readjustment  of  previously  implemented  regulations  could  require  us  and  our 
manufacturing partners to change our business plans, increase our costs, or limit our ability to sell products and conduct 
activities in China, which could adversely affect our business and operating results. 

In addition, the Chinese government and provincial and local governments have provided, and continue to provide, various 
incentives to encourage the development of the semiconductor industry in China. Such incentives include tax rebates, reduced 
tax rates, favorable lending policies and other measures, some or all of which may be available to our manufacturing partners 
and  to us  with  respect  to  our  facility  in  China.  Any of  these  incentives  could be  reduced or  eliminated by governmental 
authorities at any time. Any such reduction or elimination of incentives currently provided to our manufacturing partners 
could adversely affect our business and operating results.  

There are inherent risks associated with the operation of our testing facility in China, which could increase product 
costs or cause a delay in product shipments. 

We have a testing facility in China that began operations in 2006. We face the following risks, among others, with respect to 
our testing facility in China: 

• 

• 

• 

inability to hire and maintain a qualified workforce; 

inability to maintain appropriate and acceptable manufacturing controls; and 

higher than anticipated overhead and other costs of operation. 

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If  we  are  unable  to  maintain  our  testing  facility  in  China  at  fully  operational  status  with  qualified  workers,  appropriate 
manufacturing controls and reasonable cost levels, we may incur higher costs than our current expense levels, which would 
affect our gross margins. In addition, if capacity restraints result in significant delays in product shipments, our business and 
results of operations would be adversely affected. 

The average selling prices of products in our markets have historically decreased over time and will likely do so in the 
future, which could harm our revenue and gross profits. 

Average selling prices of semiconductor products in the markets we serve have historically decreased over time. Our gross 
profits and financial results will suffer if we are unable to offset any reductions in our average selling prices by reducing our 
costs, developing new or enhanced products on a timely basis with higher selling prices or gross profits, or increasing our 
sales volumes. Additionally, because we do not operate our own manufacturing or assembly facilities, we may not be able to 
reduce our costs as rapidly as companies that operate their own facilities, and our costs may even increase, which could also 
reduce our profit margins.  

Because of the lengthy sales cycles for our products and the fixed nature of a significant portion of our expenses, we 
may incur substantial expenses before we earn associated revenue and may not ultimately achieve our forecasted sales 
for our products. 

The  introduction  of  new  products  presents  significant  business  challenges  because  product  development  plans  and 
expenditures must be made up to two years or more in advance of any sales. It takes us up to 12 months or more to design 
and manufacture a new product prototype. Only after we have a prototype do we introduce the product to the market and 
begin  selling  efforts  in  an  attempt  to  achieve  design wins.  This  sales process  requires  us  to  expend  significant  sales  and 
marketing resources without any assurance of success. Volume production of products that use our ICs, if any, may not be 
achieved for an additional period of time after an initial sale. Sales cycles for our products are lengthy for a number of reasons, 
including: 

• 

• 

• 

• 

our  customers  usually  complete  an  in-depth  technical  evaluation  of  our  products  before  they  place  a  purchase
order; 

the commercial adoption of our products by OEMs and ODMs is typically limited during the initial release of their 
product to evaluate product performance and consumer demand; 

our products must be designed into our customers’ products or systems; and 

the  development  and  commercial  introduction  of  our  customers’  products  incorporating  new  technologies 
frequently are delayed. 

As  a  result  of  our  lengthy  sales  cycles,  we  may  incur  substantial  expenses  before  we  earn  associated  revenue  because  a 
significant portion of our operating expenses is relatively fixed and based on expected revenue. The lengthy sales cycles of 
our products also make forecasting the volume and timing of orders difficult. In addition, the delays inherent in lengthy sales 
cycles raise additional risks that customers may cancel or change their orders. Our sales are made by purchase orders. Because 
industry practice allows customers to reschedule or cancel orders on relatively short notice, backlog is not always a good 
indicator of our future sales. If customer cancellations or product changes occur, we could lose anticipated sales and not have 
sufficient time to reduce our inventory and operating expenses.  

Our success depends on our investment of significant resources in research and development. We may have to invest 
more  resources  in  research  and  development  than  anticipated,  which  could  increase  our  operating  expenses  and 
negatively impact our operating results. 

Our success depends on us investing significant amounts of resources into research and development. We expect to have to 
continue to invest heavily in research and development in the future in order to continue to innovate and come to market with 
new products in a timely manner and increase our revenue and profitability. If we have to invest more resources in research 
and development than we anticipate, we could see an increase in our operating expenses which may negatively impact our 
operating results. Also, if we are unable to properly manage and effectively utilize our research and development resources, 
we could see material adverse effects on our business, financial condition and operating results. 

19 

   
  
   
  
  
   
  
   
  
   
  
   
  
   
  
   
 
 
In  addition,  if  new  competitors,  technological  advances  by  existing  competitors,  our  entry  into  new  markets,  or  other 
competitive  factors  require  us  to  invest  significantly  greater  resources  than  anticipated  in  our  research  and  development 
efforts, our operating expenses would increase. If we are required to invest significantly greater resources than anticipated in 
research and development efforts without a corresponding increase in revenue, our operating results could decline. Research 
and development expenses are likely to fluctuate from time to time to the extent we make periodic incremental investments 
in  research  and  development  and  these  investments  may  be  independent  of  our  level  of  revenue  which  could  negatively 
impact our financial results. In order to remain competitive, we anticipate that we will continue to devote substantial resources 
to research and development, and we expect these expenses to increase in absolute dollars in the foreseeable future due to the 
increased complexity and the greater number of products under development. 

The loss of any of our key personnel or the failure to attract or retain specialized technical and management personnel 
could impair our ability to grow our business. 

Our future success depends upon our ability to attract and retain highly qualified technical and managerial personnel. We are 
particularly dependent on the continued services of our key executives, including Michael Hsing, our President and Chief 
Executive Officer, who founded our company and developed our proprietary process technology. In addition, personnel with 
highly skilled analog and mixed-signal design engineering expertise are scarce and competition for personnel with these skills 
is intense. There can be no assurance that we will be able to retain existing key employees or that we will be successful in 
attracting, integrating or retaining other highly qualified personnel with critical capabilities in the future. If we are unable to 
retain the services of existing key employees or are unsuccessful in attracting new highly qualified employees quickly enough 
to meet the demands of our business, including design cycles, our business could be harmed.  

If we fail to retain key employees in sales, applications, finance and legal or to make continued improvements to our 
internal systems, particularly in the accounting and finance area, our business may suffer. 

If we fail to continue to adequately staff our sales, applications, financial and legal staff, maintain or upgrade our business 
systems and maintain internal control that meet the demands of our business, our ability to operate effectively will suffer. 
The operation of our business also depends upon our ability to retain these employees, as these employees hold a significant 
amount of institutional knowledge about us and our products, and, if they were to terminate their employment, our sales and 
internal control over financial reporting could be adversely affected. 

We intend to continue to expand our operations, which may strain our resources and increase our operating expenses. 

We plan to continue to expand our domestic and foreign operations through internal growth, strategic relationships, and/or 
acquisitions. We expect that any such expansion will strain our systems and operational and financial controls. In addition, 
we are likely to incur significantly higher operating costs. To manage our growth effectively, we must continue to improve 
and expand our systems and controls, as well as hire experienced administrative and financial personnel. If we fail to do so, 
our growth will be limited. If we fail to effectively manage our planned expansion of operations, our business and operating 
results may be harmed. 

We may not realize the anticipated benefits of any company or business that we acquire. In addition, acquisitions 
could result in diluting the ownership interests of our stockholders, reduce our cash balances, and cause us to incur 
debt or to assume contingent liabilities, which could adversely affect our business. 

As a part of our business strategy, from time to time we review acquisition prospects that would complement our current 
product offerings, enhance our design capability or offer other competitive opportunities. For example, we completed our 
acquisition of Sensima Technology SA in July 2014 to further our diversification strategy and create new opportunities with 
key  customers.  As  a  result  of  completing  acquisitions,  we  could  use  a  significant  portion  of  our  available  cash,  cash 
equivalents and short-term investments, issue equity securities that would dilute current stockholders’ percentage ownership, 
incur substantial debt or contingent liabilities, and incur impairment charges related to goodwill or other intangibles. Such 
actions could impact our operating results and the price of our common stock.  

In addition, we may be unable to identify or complete prospective acquisitions for various reasons, including competition 
from  other  companies  in  the  semiconductor  industry,  the  valuation  expectations  of  acquisition  candidates  and  applicable 
antitrust laws or related regulations.  If we are unable to identify and complete acquisitions, we may not be able to successfully 
expand our business and product offerings. 

20 

  
  
  
  
  
  
  
  
  
  
 
 
We cannot guarantee that the Sensima acquisition or any future acquisitions will improve our results of operations or that we 
will  otherwise  realize  the  anticipated  benefits  of  any  acquisitions.  In  addition,  if  we  are  unsuccessful  in  integrating  any 
acquired  company or business  into our operations  or  if  integration  is  more difficult  than  anticipated, we  may  experience 
disruptions that could harm our business and result in our failure to realize the anticipated benefits of the acquisitions. Some 
of the risks that may adversely affect our ability to integrate or realize any anticipated benefits from the acquired companies, 
businesses or assets include those associated with: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

unexpected losses of key employees or customers of the acquired companies or businesses; 

conforming the acquired company’s standards, processes, procedures and controls with our operations; 

coordinating new product and process development; 

hiring additional management and other critical personnel; 

increasing the scope, geographic diversity and complexity of our operations; 

difficulties in consolidating facilities and transferring processes and know-how; 

other difficulties in the assimilation of acquired operations, technologies or products; 

the  risk  of  undisclosed  liabilities  of  the  acquired  businesses  and  potential  legal  disputes  with  founders  or
stockholders of acquired companies; 

our inability to commercialize acquired technologies; 

the risk that the future business potential as projected is not realized and as a result, we may be required to take a
charge to earnings that would impact our profitability; 

the need to take impairment charges or write-downs with respect to acquired assets and technologies; 

diversion of management’s attention from other business concerns; and 

adverse effects on existing business relationships with customers. 

We compete against many companies with substantially greater financial and other resources, and our market share 
may be reduced if we are unable to respond to our competitors effectively. 

The analog and mixed-signal semiconductor industry is highly competitive, and we expect competitive pressures to continue. 
Our ability to compete effectively and to expand our business will depend on our ability to continue to recruit applications 
and design talent, our ability to introduce new products, and our ability to maintain the rate at which we introduce these new 
products. We compete with domestic and non-domestic semiconductor companies, many of which have substantially greater 
financial and other resources with which to pursue engineering, manufacturing, marketing, and distribution of their products. 
We are in direct and active competition, with respect to one or more of our product lines, with at least 10 manufacturers of 
such products, of varying size and financial strength. The number of our competitors has grown due to the expansion of the 
market segments in which we participate.  

We  cannot  assure  you  that  our  products  will  continue  to  compete  favorably  or  that  we  will  be  successful  in  the  face  of 
increasing competition from new products and enhancements introduced by existing competitors or new companies entering 
this market, which would materially and adversely affect our results of operations and our financial condition. 

If securities or industry analysts downgrade our stock or do not continue to publish research or reports about our 
business, our stock price and trading volume could decline. 

The trading market for our common stock will depend, in part, on the research and reports that industry or securities analysts 
publish about us or our business. We do not have any control over these analysts. If one or more of the analysts who cover 
us downgrade our stock, our stock price would likely decline. If one or more of these analysts cease coverage of us or fail to 
regularly publish reports on us, we could lose visibility in the financial markets, which in turn could cause our stock price or 
trading volume to decline. 

21 

  
   
  
   
  
   
  
   
  
   
   
   
  
   
  
   
  
   
   
   
  
   
  
   
  
   
  
  
   
  
  
Major earthquakes or other natural disasters and resulting systems outages may cause us significant losses. 

Our corporate headquarters, the production facilities of our third-party wafer suppliers, our IC testing facility, a portion of 
our assembly and research and development activities, and certain other critical business operations are located in or near 
seismically active regions and are subject to periodic earthquakes. We do not maintain earthquake insurance and could be 
materially and adversely affected in the event of a major earthquake. Much of our revenue, as well as our manufacturers and 
assemblers, are concentrated in Asia. Such concentration increases the risk that other natural disasters, labor strikes, terrorism, 
war, political unrest, epidemics, and/or health advisories could disrupt our operations. In addition, we rely heavily on our 
internal  information  and  communications  systems  and  on  systems  or  support  services  from  third  parties  to  manage  our 
operations efficiently and effectively. Any of these are subject to failure due to a natural disaster or other disruption. System-
wide or local failures that affect our information processing could have material adverse effects on our business, financial 
condition, operating results, and cash flows. 

There can be no assurance that we will continue to declare cash dividends at all or in any particular amounts. 

In  June  2014,  the  Board  of  Directors  approved  a  dividend  program  pursuant  to  which  we  intend  to  pay  quarterly  cash 
dividends on our common stock. We anticipate the cash used for future dividends will come from our current domestic cash 
and cash generated from ongoing U.S. operations. If cash held by our international subsidiaries is needed for the payment of 
dividends, we may be required to accrue and pay U.S. taxes to repatriate these funds. 

The declaration of cash dividends on our common stock is at the discretion of our Board of Directors. Any future decision to 
declare and pay a cash dividend on our common stock will be subject to, among other things, our results of operations, cash 
balances  and future  cash requirements,  financial  condition,  statutory  requirements  of Delaware  law,  compliance  with  the 
terms  of  future  indebtedness  and  credit  facilities,  and  other  factors  that  our  Board  of  Directors  may  deem  relevant.  Our 
dividend payments may change from time to time, and we cannot provide assurance that we will continue to declare dividends 
at all or in any particular amounts. A reduction in or elimination of our dividend payments could have a negative effect on 
the price of our common stock. 

ITEM 1B.    UNRESOLVED STAFF COMMENTS 

None. 

ITEM 2.    PROPERTIES 

Our primary operations are located in San Jose, California and Chengdu, China. We occupy an owned facility located at 79 
Great Oaks Boulevard in San Jose, California, which serves as our corporate headquarters and sales offices. The property 
consists of a building with approximately 106,262 square feet and 5.5 acres of land.   

We  lease  a  facility  with  approximately  56,000  square  feet  in  Chengdu,  China,  which  serves  as  our  test  facility  and 
manufacturing hub. In addition, we constructed a 150,000 square-foot research and development facility in Chengdu, China, 
which was put into operation in October 2010. 

We also lease sales and research and development offices in the United States, Europe, Japan, China, Taiwan and Korea. We 
believe that our existing facilities are adequate for our current operations. 

ITEM 3.    LEGAL PROCEEDINGS 

We  and  certain  of  our  subsidiaries  are  parties  to  actions  and  proceedings  in  the  ordinary  course  of  business,  including 
litigation  regarding  our  shareholders  and  our  intellectual  property,  challenges  to  the  enforceability  or  validity  of  our 
intellectual property and claims that our products infringe on the intellectual property rights of others. These proceedings 
often involve complex questions of fact and law and may require the expenditure of significant funds and the diversion of 
other resources to prosecute and defend. We defend ourselves vigorously against any such claims. 

As of December 31, 2014, there were no material pending legal proceedings to which we were a party. 

ITEM 4.    MINE SAFETY DISCLOSURES 

Not applicable. 

22 

  
  
  
  
  
  
  
  
  
  
  
  
  
   
  
  
PART II 

ITEM 5.  MARKET  FOR  REGISTRANT’S  COMMON  EQUITY,  RELATED  STOCKHOLDERS  MATTERS, 

AND ISSUER PURCHASES OF EQUITY SECURITIES. 

Market Price of Our Common Stock 

Our common stock is traded on the Nasdaq Global Select Market under the symbol “MPWR”. The following table sets forth 
the high and low sales price per share of our common stock: 

2014: 
First quarter ..............................................................................................................   $
Second quarter .........................................................................................................   $
Third quarter ............................................................................................................   $
Fourth quarter ...........................................................................................................   $

2013: 
First quarter ..............................................................................................................   $
Second quarter .........................................................................................................   $
Third quarter ............................................................................................................   $
Fourth quarter ...........................................................................................................   $

Holders of Our Common Stock 

High 

Low

38.86     $ 
42.48     $ 
47.78     $ 
50.44     $ 

25.51     $ 
25.02     $ 
31.05     $ 
34.66     $ 

31.36  
35.14  
40.77  
34.47  

22.18  
20.99  
23.93  
27.59  

As of February 23, 2015, there were 12 registered holders of record of our common stock. A substantially greater number of 
holders of our common stock are “street name” or beneficial holders, whose shares are held by banks, brokers and other 
financial institutions. 

Dividend Policy 

In  June  2014,  our  Board  of  Directors  approved  a  dividend  program  pursuant  to  which  we  intend  to  pay  quarterly  cash 
dividends on our common stock. Stockholders of record as of the last day of the quarter are entitled to receive the quarterly 
cash dividends declared by our Board of Directors, which are payable on the 15th of the following month. Our Board of 
Directors declared the following cash dividends in 2014 (in thousands, except per share amounts): 

  Dividend Declared     
per Share 

Total
Amount

2014: 
Second quarter  ....................................................................................................   $
Third quarter  .......................................................................................................   $
Fourth quarter .......................................................................................................   $

0.15     $ 
0.15     $ 
0.15     $ 

5,817  
5,823  
5,826 

The declaration of any future cash dividends is at the discretion of our Board of Directors and will depend on our financial 
condition, results of operations, capital requirements, business conditions and other factors, as well as a determination that 
cash dividends are in the best interests of our stockholders. We anticipate that the cash used for future dividends will come 
from  our  current  domestic  cash  and  cash  generated  from  ongoing  U.S.  operations.  If  cash  held  by  our  international 
subsidiaries is needed for the payment of dividends, we may be required to accrue and pay U.S. taxes to repatriate the funds. 

23 

  
 
  
  
  
  
 
    
 
     
        
 
  
      
        
 
     
        
 
  
  
  
  
  
  
 
  
 
    
 
     
        
 
  
  
  
 
 
Performance of Our Common Stock 

The following graph compares the cumulative five-year total return on our common stock relative to the cumulative total 
returns of the Nasdaq Composite Index, the S&P 500 Index and the Philadelphia Semiconductor Index. An investment of 
$100 (with reinvestment of all dividends) is assumed to have been made in our common stock on December 31, 2009 and its 
relative performance is tracked through December 31, 2014. 

The information contained in the stock performance graph section shall not be deemed to be “soliciting material” or “filed” 
or incorporated by reference in future filings with the SEC, or subject to the liabilities of Section 18 of the Exchange Act, 
except to the extent that the Company specifically incorporates it by reference into a document filed under the Securities Act 
of 1933, as amended, or the Securities Exchange Act of 1934, as amended. 

Purchases of Equity Securities by the Issuer and Affiliated Purchasers 

Stock repurchase activities during the three months ended December 31, 2014 were as follows (in thousands, except per share 
amounts): 

   Total Number of 
Shares 
Purchased (a)

    Average Price 

Paid 
per Share

Total Number of 
Shares Purchased 
as Part of Publicly 
Announced 
Program 

Dollar Value of 
Shares That May 
Yet Be Purchased
Under the 
Program 

October 1 - October 31 ..................     
November 1 - November 30 ..........     
December 1 - December 31 ...........     
Total ..............................................     

107    $
41    $
45    $
193    $

38.57      
45.62      
48.97      
42.48      

107      
41      
45      
193    $ 

38,187  

(a)  In July 2013, the Board of Directors approved a stock repurchase program that authorizes us to repurchase up to $100
million in the aggregate of our common stock through June 30, 2015. Under the program, shares may be repurchased in 
privately negotiated or open market transactions, including under a Rule 10b5-1 plan. Shares are retired upon repurchase. 

24 

  
 
  
  
  
  
   
    
 
  
  
  
  
  
 
 
ITEM 6.    SELECTED FINANCIAL DATA 

The following financial data is derived from our audited annual consolidated financial statements as of and for the years 
ended  December  31,  2014,  2013,  2012,  2011  and  2010.  You  should  read  the  following  table  in  conjunction  with  the 
consolidated financial statements and the related notes contained in Item 8 in this Annual Report on Form 10-K. Operating 
results for any year are not necessarily indicative of results to be expected for any future periods. 

Consolidated Statement of Operations Data: 

2014

Year Ended December 31, 
2012
(in thousands, except per share amounts) 

2011 

2013

2010

Revenue  .................................................................   $
Cost of revenue  .....................................................    
Gross profit  .................................................    

282,535     $
129,917      
152,618      

238,091     $
110,190      
127,901      

213,813     $
100,665       
113,148       

196,519     $
94,925      
101,594      

218,840  
97,383  
121,457  

Operating expenses: 

Research and development  ................................    
Selling, general and administrative  ....................    
Litigation expense (benefit), net .........................    
Total operating expenses  ............................    
Income from operations  ........................................    
Interest and other income, net ................................    
Income before income taxes  ..................................    
Income tax provision ..............................................    
Net income  ............................................................   $

58,590      
66,755      
(8,027)    
117,318      
35,300      
1,092      
36,392      
897      
35,495     $

49,733      
54,624      
(371)    
103,986      
23,915      
92      
24,007      
1,109      
22,898     $

48,796       
50,018       
(2,945)     
95,869       
17,279       
611       
17,890       
2,134       
15,756     $

44,518      
40,280      
3,379      
88,177      
13,417      
309      
13,726      
425      
13,301     $

44,372  
41,169  
5,418  
90,959  
30,498  
922  
31,420  
1,857  
29,563  

Net income per share: 

Basic  ...........................................................   $
Diluted .........................................................   $

0.92     $
0.89     $

0.61     $
0.59     $

0.45     $
0.43     $

0.39     $
0.38     $

0.83  
0.78  

Weighted-average shares outstanding: 

Basic ............................................................    
Diluted .........................................................    

38,686      
39,793      

37,387      
38,620      

34,871       
36,247       

34,050      
35,160      

35,830  
37,826  

Cash dividends declared per common share ..........   $

0.45     $

-    $

1.00     $

-    $

- 

Consolidated Balance Sheet Data: 

2014

2013

As of December 31, 
2012
(in thousands) 

2011 

2010

Cash and cash equivalents ....................................   $
Short-term investments ........................................   $
Long-term investments .........................................   $
Total assets ...........................................................   $
Long-term income tax liabilities ..........................   $
Common stock .....................................................   $
Total stockholders' equity ....................................   $
Working capital ....................................................   $

126,266     $
112,452     $
5,389     $
399,366     $
5,876     $
240,500     $
346,425     $
271,285     $

101,213     $
125,126     $
9,860     $
368,908     $
5,542     $
234,201     $
323,399     $
253,597     $

75,104     $
85,521     $
11,755     $
287,162     $
5,408     $
194,079     $
258,294     $
190,841     $

96,371     $
77,827     $
13,675     $
273,867     $
4,920     $
159,336     $
242,877     $
185,435     $

48,010  
129,709  
19,180  
281,603  
5,015  
178,269  
246,895  
195,403  

25 

  
  
  
  
 
 
  
 
   
   
    
   
 
  
 
 
      
        
        
        
        
 
  
      
        
        
        
        
 
      
        
        
        
        
 
      
        
        
        
        
 
  
      
        
        
        
        
 
  
  
  
  
 
 
  
 
   
   
    
   
 
  
 
 
  
  
 
 
ITEM 7.  MANAGEMENT’S  DISCUSSION  AND  ANALYSIS  OF  FINANCIAL  CONDITION  AND  RESULTS 

OF OPERATIONS 

The following discussion should be read in conjunction with the consolidated financial statements and related notes which 
appear under Item 8 in this Annual Report on Form 10-K. 

Overview 

We  are  a  leading  company  in  high  performance  power  solutions.  Founded  in  1997,  we  pioneered  integrated  power 
semiconductor solutions and power delivery architectures. Our mission is to provide innovative power solutions in cloud 
computing, telecommunications, industrial and automotive, and consumer market segments. We believe that we differentiate 
ourselves by offering solutions that are more highly integrated, smaller in size, more energy efficient, more accurate with 
respect to performance specifications and, consequently, more cost-effective than many competing solutions. We plan to 
continue to introduce new products within our existing product families, as well as in new innovative product categories. 

We operate in the cyclical semiconductor industry where there is seasonal demand for certain products. We are not and will 
not be immune from current and future industry downturns, but we have targeted product and market areas that we believe 
have the ability to offer above average industry performance. 

We work with third parties to manufacture and assemble our integrated circuits (“ICs”). This has enabled us to limit our 
capital expenditures and fixed costs, while focusing our engineering and design resources on our core strengths. 

Following  the  introduction  of  a  product,  our  sales  cycle  generally  takes  a  number  of  quarters  after  we  receive  an  initial 
customer order for a new product to ramp up. Typical lead time for orders is fewer than 90 days. These factors, combined 
with the fact that orders in the semiconductor industry can typically be cancelled or rescheduled without significant penalty 
to the customer, make the forecasting of our orders and revenue difficult. 

We derive most of our revenue from sales through distribution arrangements and direct sales to customers in Asia, where the 
products we produce are incorporated into end-user products. Our revenue from direct or indirect sales to customers in Asia 
was 91% and 90% for the years ended December 31, 2014 and 2013, respectively. We derive a majority of our revenue from 
the sales of our DC to DC converter product family which services the communications, storage and computing, consumer 
and industrial markets. We believe our ability to achieve revenue growth will depend, in part, on our ability to develop new 
products, enter new market segments, gain market share, manage litigation risk, diversify our customer base and successfully 
secure manufacturing capacity. 

In July 2014, we completed the acquisition of Sensima Technology SA (“Sensima”), a company located in Switzerland that 
develops magnetic sensors for angle measurements as well as three-dimensional magnetic field sensing. The acquisition is 
expected to create new opportunities with customers by offering enhanced solutions in power management for key industries 
such as automotive, industrial and cloud computing. The purchase consideration consisted of an upfront cash payment of 
$11.7 million and additional consideration that is contingent upon Sensima achieving a new product introduction and certain 
revenue and direct margin goals in 2016, with a fair value of $2.5 million at the date of acquisition. In addition, key employees 
received $1.7 million of time-based restricted stock units and up to $8.0 million of performance-based restricted stock units 
in connection with the transaction. These equity awards are considered arrangements for post-acquisition services and the 
related compensation expense is being recognized over the requisite service period. The results of operations of Sensima 
have been included in our consolidated financial statements subsequent to the acquisition date. 

Critical Accounting Policies and Estimates 

Our discussion and analysis of our financial condition and results of operations are based upon our consolidated financial 
statements,  which  have  been  prepared  in  accordance  with  generally  accepted  accounting  principles  in  the  U.S.  The 
preparation of these financial statements requires us to make estimates and judgments that affect the reported amount of 
assets, liabilities, revenue and expenses, and related disclosure of contingent assets and liabilities. We evaluate our estimates 
on an on-going basis, including those related to revenue recognition, stock-based compensation, inventories, income taxes, 
valuation of goodwill and intangible assets, and contingencies. We base our estimates on historical experience and on various 
other assumptions that are believed to be reasonable under the circumstances, the results of which form the basis for making 
the judgments about the carrying values of assets and liabilities that are not readily apparent from other sources.  Estimates 
and judgments used in the preparation of our financial statements are, by their nature, uncertain and unpredictable, and depend 
upon,  among  other  things,  many  factors  outside  of  our  control,  such  as  demand  for  our  products  and  economic 

26 

 
  
  
  
  
  
  
   
  
  
  
conditions.    Accordingly,  our  estimates  and  judgments  may  prove  to  be  incorrect  and  actual  results  may  differ,  perhaps 
significantly, from these estimates. 

We believe the following critical accounting policies reflect our more significant judgments used in the preparation of our 
consolidated financial statements. 

Revenue Recognition  

We recognize revenue when the following four basic criteria are met: (1) persuasive evidence of an arrangement exists; (2) 
delivery has occurred or services have been rendered; (3) the fee is fixed or determinable; and (4) collectability is reasonably 
assured. Determination of criteria (3) and (4) are based on management’s judgment regarding the fixed nature of the fees 
charged for products delivered and the collectability of those fees. The application of these criteria has resulted in us generally 
recognizing  revenue  upon  shipment  (when  title  passes)  to  customers,  including  distributors,  original  equipment 
manufacturers and electronic manufacturing service providers.  

Our  revenue  consists  primarily  of  sales  of  assembled  and  tested  finished  goods.  We  also  sell  die  in  wafer  form  to  our 
customers and value-added resellers, and we receive royalty revenue from third parties and value-added resellers. 

For  the  years  ended  December  31,  2014  and  2013,  approximately  92%  and  91%  of  our  distributor  sales,  respectively, 
including  sales  to  our  value-added  resellers,  were  made  through  distribution  arrangements  with  third  parties.  These 
arrangements do not include any special payment terms (normal payment terms are 30-45 days for our distributors), price 
protection or exchange rights. Returns are limited to our standard product warranty. Certain of our large distributors have 
contracts that include limited stock rotation rights that permit the return of a small percentage of the previous six months’ 
purchases. 

For the years ended December 31, 2014 and 2013, approximately 8% and 9% of our distributor sales, respectively, were 
made through small distributors primarily based on purchase orders. These distributors typically have no stock rotation rights. 

We generally recognize revenue upon shipment of products to the distributors for the following reasons: 

(1)  The price is fixed or determinable at the date of sale. We do not offer special payment terms, price protection or

price adjustments to distributors when we recognize revenue upon shipment. 

(2)  The distributors are obligated to pay us and this obligation is not contingent on the resale of our products. 
(3)  The distributors’ obligation is unchanged in the event of theft or physical destruction or damage to the products. 
(4)  The distributors have stand-alone economic substance apart from our relationship. 
(5)  We do not have any obligations for future performance to directly bring about the resale of our products by the

distributors. 

(6)  The amount of future returns can be reasonably estimated. We have the ability and the information necessary to 
track inventory sold to and held at our distributors. We maintain a history of returns and have the ability to estimate
the stock rotation returns on a quarterly basis. 

We maintain a sales reserve for stock rotation rights, which is based on historical experience of actual stock rotation returns 
on a per distributor basis, where available, and information related to products in the distribution channel. This reserve is 
recorded at the time of sale. Historically, these returns were not material to our consolidated financial statements.  In the 
future,  if  we  are  not  able  to  estimate  our  stock  rotation  returns  accurately,  we  may  have  to  recognize  revenue  when  the 
distributors sell such inventory to end customers. 

 If we enter into arrangements that have rights of return that are not estimable, we recognize revenue under such arrangements 
only after the distributors have sold the products to end customers. Three of our U.S. distributors have distribution agreements 
where revenue is recognized upon sale by these distributors to their end customers because these distributors have certain 
rights of return which management believes are not estimable. The deferred revenue balance from these distributors as of 
December 31, 2014 and 2013 was $2.0 million and $1.7 million, respectively. The deferred costs as of December 31, 2014 
and 2013 were $0.2 million. 

We generally provide a one to two-year warranty against defects in materials and workmanship. Under this warranty, we will 
repair the goods, provide replacements at no charge, or, under certain circumstances, provide a refund to the customer for 
defective products. Estimated warranty returns and warranty costs are based on historical experience and are recorded at the 
time product revenue is recognized. 

27 

  
   
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
Inventory Valuation 

We value our inventory at the lower of the standard cost (which approximates actual cost on a first-in, first-out basis) or its 
current estimated market value.  We write down inventory for obsolescence or lack of demand, based on assumptions about 
future demand and market conditions. If actual market conditions are less favorable than those projected by management, 
additional inventory write-downs may be required. Conversely, if market conditions are more favorable, inventory may be 
sold that was previously reserved.  

Valuation of Goodwill and Acquisition-Related Intangible Assets 

We evaluate intangible assets with finite lives for impairment whenever events or changes in circumstances indicate that an 
impairment may exist. We perform an annual impairment assessment for goodwill and intangible assets with indefinite lives 
in  the  fourth  quarter,  or  more  frequently  if  indicators  of  potential  impairment  exist.  Impairment  of  intangible  assets  is 
recognized based on the difference between the fair value of the assets and their carrying value. Impairment for goodwill 
occurs if the fair value of a reporting unit including goodwill is less than its carrying value and is recognized based on the 
difference  between  the  implied  fair  value  of  the  reporting  unit’s  goodwill  and  the  carrying  value  of  the  goodwill.  The 
assumptions and estimates used to determine future values of goodwill and intangible assets are complex and subjective. 
They can be affected by various factors, including external factors such as industry and economic trends, and internal factors 
such as changes in our business strategy and revenue forecasts. If there is a significant adverse change in our business in the 
future, including macroeconomic and market conditions, we may be required to record impairment charges on our goodwill 
and acquisition-related intangible assets. 

Accounting for Income Taxes  

ASC  740-10,  Income  Taxes  –  Overall,  prescribes  a  recognition  threshold  and  measurement  attribute  for  the  financial 
statement recognition and measurement of a tax position taken or expected to be taken in a tax return. This interpretation also 
provides guidance on classification, interest and penalties, accounting in interim periods and disclosure. In accordance with 
ASC 740-10, we recognize federal, state and foreign current tax liabilities or assets based on our estimate of taxes payable or 
refundable in the current fiscal year by tax jurisdiction. We also recognize federal, state and foreign deferred tax assets or 
liabilities for our estimate of future tax effects attributable to temporary differences and carryforwards. We record a valuation 
allowance to reduce any deferred tax assets by the amount of any tax benefits that, based on available evidence and judgment, 
are not expected to be realized. 

Our calculation of current and deferred tax assets and liabilities is based on certain estimates and judgments and involves 
dealing  with  uncertainties  in  the  application  of  complex  tax  laws.  Our  estimates  of  current  and  deferred  tax  assets  and 
liabilities  may  change  based,  in  part,  on  added  certainty  or  finality  or  uncertainty  to  an  anticipated  outcome,  changes  in 
accounting or tax laws in the U.S. or foreign jurisdictions where we operate, or changes in other facts or circumstances. In 
addition, we recognize liabilities for potential U.S. and foreign income tax for uncertain income tax positions taken on our 
tax  returns  if  it  has  less  than  a  50%  likelihood  of  being  sustained.  If  we  determine  that  payment  of  these  amounts  is 
unnecessary or if the recorded tax liability is less than our current assessment, we may be required to recognize an income 
tax benefit or additional income tax expense in our financial statements in the period such determination is made. We have 
calculated our uncertain tax positions which were attributable to certain estimates and judgments primarily related to transfer 
pricing, cost sharing and our international tax structure exposure. 

As  of  December  31,  2014,  and  2013,  we  had  a  valuation  allowance  of  $19.1  million  and  $16.7  million,  respectively, 
attributable to management’s determination that it is more likely than not that most of the deferred tax assets in the U.S. will 
not be realized. Should it be determined that additional amounts of the net deferred tax asset will not be realized in the future, 
an  adjustment  to  increase  the  deferred  tax  asset  valuation  allowance  will  be  charged  to  income  in  the  period  such 
determination is made. Likewise, in the event we were to determine that it is more likely than not that we would be able to 
realize our deferred tax assets in the future in excess of our net recorded amount, an adjustment to the valuation allowance 
for the deferred tax asset would increase income in the period such determination was made. 

As a result of the cost sharing arrangements with our international subsidiaries (cost share arrangements), relatively small 
changes  in  costs  that  are  not  subject  to  sharing  under  the  cost  share  arrangements  can  significantly  impact  the  overall 
profitability of the U.S. entity. Because of the U.S. entity’s inconsistent earnings history and uncertainty of future earnings, 
we have determined that it is more likely than not that the U.S. deferred tax benefits will not be realized. 

28 

  
   
  
  
  
  
  
  
  
 
 
Contingencies 

We are a party to actions and proceedings incident to our business in the ordinary course of business, including litigation 
regarding our intellectual property, challenges to the enforceability or validity of our intellectual property and claims that our 
products infringe on the intellectual property rights of others. The pending proceedings involve complex questions of fact 
and law and will require the expenditure of significant funds and the diversion of other resources to prosecute and defend. In 
addition, from time to time, we become aware that we are subject to other contingent liabilities. When this occurs, we will 
evaluate the appropriate accounting for the potential contingent liabilities to determine whether a contingent liability should 
be recorded. In making this determination, management may, depending on the nature of the matter, consult with internal 
and external legal counsel and technical experts. Based on the facts and circumstances in each matter, we use our judgment 
to determine whether it is probable that a contingent loss has occurred and whether the amount of such loss can be estimated. 
If we determine a loss is probable and estimable, we record a contingent loss. In determining the amount of a contingent loss, 
we  take  into  account  advice  received  from  experts  for  each  specific  matter  regarding  the  status  of  legal  proceedings, 
settlement negotiations, prior case history and other factors. Should the judgments and estimates made by management need 
to be adjusted as additional information becomes available, we may need to record additional contingent losses that could 
materially and adversely impact our results of operations. Alternatively, if the judgments and estimates made by management 
are adjusted, for example, if a particular contingent loss does not occur, the contingent loss recorded would be reversed which 
could result in a favorable impact on our results of operations. 

Stock-Based Compensation 

We measure the cost of employee services received in exchange for an award of equity instruments based on the grant-date 
fair value of the award. We use the Black-Scholes model to estimate the fair value of our options and shares issued under 
employee stock purchase plan. The fair value of time-based and performance-based restricted stock units is based on the 
grant date share price. The fair value of market-based restricted stock units is estimated using a Monte Carlo simulation 
model. 

We recognize compensation expense equal to the grant-date fair value for all share-based payment awards that are expected 
to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire awards, unless the 
awards are subject to performance or market conditions, in which case we recognize compensation expense over the requisite 
service  period  of  each  separate  vesting  tranche.  For  the performance-based  awards,  we  recognize  compensation  expense 
when it becomes probable that the performance criteria set by the Board of Directors will be achieved. For the market-based 
awards,  compensation  expense  is  not  reversed  if  the  market  condition  is  not  satisfied.  If  the  actual  performance  targets 
achieved differ  significantly from  those projected by  management,  additional  stock-based  compensation  expense  may  be 
recorded for the performance-based awards, which could have an adverse impact on our results of operations. Furthermore, 
the amount of stock-based compensation that we recognize is based on an expected forfeiture rate. If there is a difference 
between  the  forfeiture  assumptions  used  in determining  stock-based  compensation  costs  and  the  actual  forfeitures  which 
become  known  over  time,  we  may  change  the  forfeiture  rate,  which  could  have  a  significant  impact  on  our  stock-based 
compensation expense. 

29 

  
   
  
  
  
 
 
Recent Accounting Pronouncements 

In July 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2013-
11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax 
Credit  Carryforward  Exists.  The  standard  gives  guidance  on  the  financial  statement  presentation  of  an  unrecognized  tax 
benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists, with the purpose of 
reducing diversity in practice. This new standard requires the netting of unrecognized tax benefits against a deferred tax asset 
for a loss or other carryforward that would apply in settlement of the uncertain tax positions. We adopted this standard in the 
first quarter of 2014 prospectively and the adoption did not have an impact on our consolidated financial position, results of 
operations or cash flows. 

In  May  2014,  the  FASB  issued  ASU  No.  2014-09,  Revenue  from  Contracts  with  Customers,  which  outlines  a  single 
comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The standard’s core 
principle is that an entity will recognize revenue when it transfers promised goods or services to customers in an amount that 
reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Under the new 
standard, entities will apply the following five-step model when evaluating revenue contracts with customers: 

(1)  Identify the contract with a customer. 
(2)  Identify the performance obligations in the contract. 
(3)  Determine the transaction price. 
(4)  Allocate the transaction price to the performance obligations in the contract. 
(5)  Recognize revenue when the entity satisfies a performance obligation. 

The new standard is effective for annual and interim reporting periods beginning after December 15, 2016. Entities have the 
option of using either a full retrospective or a modified retrospective application in the adoption of this standard. We will 
adopt the standard in the first quarter of 2017 and are evaluating the transition method and the impact of the adoption on our 
consolidated financial position, results of operations and cash flows. 

Results of Operations 

The following table summarizes our results of operations: 

Revenue .........................................  $
Cost of revenue .............................    
Gross profit ...................................    
Operating expenses: 

Research and development ........    
Selling, general and 

administrative ..........................    
Litigation benefit, net ................    
Total operating expenses ........    
Income from operations ................    
Interest and other income, net .......    
Income before income taxes ..........    
Income tax provision .....................    
Net income  ...................................  $

2014

Year Ended December 31, 
2013
(in thousands, except percentages) 

2012

282,535     
129,917     
152,618     

100.0 %  $
46.0       
54.0       

238,091      
110,190      
127,901      

100.0 %   $  213,813      
100,665      
113,148      

46.3        
53.7        

100.0 %
47.1   
52.9   

58,590      

20.7       

49,733      

20.9        

48,796      

22.8   

66,755      
(8,027)    
117,318     
35,300      
1,092      
36,392      
897      
35,495      

23.6       
(2.8)     
41.5       
12.5       
0.4       
12.9       
0.3       
12.6 %  $

54,624      
(371)    
103,986      
23,915      
92      
24,007      
1,109      
22,898      

22.9        
(0.2)      
43.6        
10.1        
0.0        
10.1        
0.5        
9.6 %   $ 

50,018      
(2,945)    
95,869      
17,279      
611      
17,890      
2,134      
15,756      

23.4   
(1.4) 
44.8   
8.1   
0.3   
8.4   
1.0   
7.4 %

30 

  
  
    
  
  
  
  
  
  
   
  
  
  
  
 
  
  
 
 
     
 
  
  
  
      
        
         
        
         
        
  
  
 
 
Revenue 

The following table summarizes our revenue by product family: 

Year Ended December 31,

Product Family 

2014 

Revenue 

2013

Revenue

2012

Revenue 

     % of  

    % of 

    % of 

Change

From  
2013 to 
2014 

From  
2012 to
2013

DC to DC products ........   $ 253,083       
Lighting control 

products ......................      29,452       
Total  .............................   $ 282,535       

(In thousands, except percentages) 

89.6%  $ 211,337      

88.8%  $ 188,736     

88.3%     

19.8%   

12.0%

10.4%    26,754      
100.0%  $ 238,091      

11.2%    25,077     
100.0%  $ 213,813     

11.7%     
100.0%     

10.1%   
18.7%   

6.7%
11.4%

Revenue for the year ended December 31, 2014 was $282.5 million, an increase of $44.4 million, or 18.7%, from $238.1 
million for the year ended December 31, 2013. This increase was due to higher sales of both DC to DC and lighting control 
products, as unit shipments increased 37% due to higher market demand with current customers and additional design wins 
with new  customers,  which were  offset  in part  by  a 13%  decrease  in  average  sales prices.  Revenue  from  our  DC to DC 
products was $253.1 million for the year ended December 31, 2014, an increase of $41.7 million, or 19.8%, from the same 
period in 2013. This increase was primarily due to higher sales of our DC to DC converters, offset in part by lower sales of 
our Mini-Monsters products. Revenue from our lighting control products was $29.5 million for the year ended December 31, 
2014, an increase of $2.7 million, or 10.1%, compared with the same period in 2013. 

Revenue for the year ended December 31, 2013 was $238.1 million, an increase of $24.3 million, or 11.4%, from $213.8 
million for the year ended December 31, 2012. This increase was due to higher sales of both DC to DC and lighting control 
products, as unit shipments increased 18% due to higher market demand with current customers and additional design wins 
with new customers, which were offset in part by a 6% decrease in average sales prices. Revenue from our DC to DC products 
was $211.3 million for the year ended December 31, 2013, an increase of $22.6 million, or 12.0%, from the same period in 
2012. This increase was primarily due to higher sales of our DC to DC converters, Mini-Monsters, PMICs and battery charger 
products. Revenue from our lighting control products was $26.8 million for the year ended December 31, 2013, an increase 
of $1.7 million, or 6.7%, compared with the same period in 2012.  

Cost of Revenue and Gross Margin  

Cost of revenue consists primarily of costs incurred to manufacture, assemble and test our products, as well as warranty costs, 
inventory-related expenses and other overhead costs and stock-based compensation expenses. In addition, cost of revenue 
includes amortization of intangible assets from the Sensima acquisition beginning in the third quarter of 2014. 

Year Ended December 31,

Change

2014

Cost of revenue  ...................................................   $
Cost of revenue as a percentage of revenue .........    
Gross profit ..........................................................   $
Gross margin ........................................................    

129,917      $
46.0%   
152,618      $
54.0%   

From  
2013 to 
2014 
2012
2013
(in thousands, except percentages) 
110,190     $
46.3%   
127,901     $
53.7%   

100,665        
47.1%    
113,148        
52.9%    

17.9%   

19.3%   

From  
2012 to 
2013

9.5%

13.0%

Cost of revenue was $129.9 million, or 46.0% of revenue, for the year ended December 31, 2014, and $110.2 million, or 
46.3% of revenue, for the year ended December 31, 2013. The $19.7 million increase in cost of revenue was primarily due 
to a 37% increase in unit shipments, which was partially offset by a 14% decrease in the average direct cost of units shipped. 
In addition, the increase in cost of revenue was driven by an increase of $0.8 million in the provision for inventory reserve, 
and an increase of $0.7 million in amortization of intangible assets from the Sensima acquisition in July 2014. 

Gross profit as a percentage of revenue, or gross margin, was 54.0% for the year ended December 31, 2014, compared to 
53.7% for the year ended December 31, 2013. The increase in gross margin was primarily due to higher absorption of in-
house test manufacturing overhead, compared to the same period in 2013. This increase was partially offset by an increase 

31 

  
  
  
  
     
 
  
    
    
     
    
  
  
  
  
  
  
  
  
  
  
 
     
 
  
 
    
    
     
    
  
  
 
  
       
   
       
   
  
  
in the provision for inventory reserve and an increase in the amortization of intangible assets from the Sensima acquisition 
in July 2014.  

Cost of revenue was $110.2 million, or 46.3% of revenue, for the year ended December, 2013, and $100.7 million, or 47.1% 
of revenue, for the year ended December, 2012. The $9.5 million increase in cost of revenue was primarily due to an 18% 
increase in unit shipments, which was partially offset by an 8% decrease in the average direct cost of units shipped. The 
increase in cost of revenue was partially offset by a decrease of $0.5 million in the provision for inventory reserve. 

Gross margin was 53.7% for the year ended December 31, 2013, compared to 52.9% for the year ended December 31, 2012. 
The  increase  in  gross  margin  was  primarily  due  to  increased  sales  of  higher  margin  products  and  a  lower  provision  for 
inventory reserve. This increase was partially offset by lower absorption of in-house test manufacturing overhead. 

Research and Development   

Research and development expenses primarily consist of salary and benefit expenses, bonuses and stock-based compensation 
expenses for design and product engineers, expenses related to new product development and supplies, and facility costs.  

Year Ended December 31,

Change

2014

From  
2013 to  
2013
2014 
2012
(in thousands, except percentages) 

From  
2012 to  
2013

Research and development ("R&D") ...................   $
R&D as a percentage of revenue ..........................    

58,590      $
20.7%   

49,733     $
20.9%   

48,796        
22.8%    

17.8%   

1.9%

R&D expenses were $58.6 million, or 20.7% of revenue, for the year ended December 31, 2014 and $49.7 million, or 20.9% 
of revenue, for the year ended December 31, 2013. The $8.9 million increase in R&D expenses was primarily due to an 
increase of $2.8 million in stock-based compensation expenses primarily associated with the performance-based and market-
based equity awards, an increase of $2.4 million in new product development expenses, an increase of $2.0 million in cash 
compensation expenses, which include salary, benefits and bonuses, and an increase of $0.6 million in manufacturing and 
laboratory supplies. Our R&D headcount was 476 employees as of December 31, 2014, compared with 449 employees as of 
December 31, 2013. 

R&D expenses were $49.7 million, or 20.9% of revenue, for the year ended December 31, 2013 and $48.8 million, or 22.8% 
of revenue, for the year ended December 31, 2012. The $0.9 million increase in R&D expenses was primarily due to an 
increase  of  $1.6  million  in  depreciation  expense,  and  an  increase  of  $0.7  million  in  cash  compensation  expenses,  which 
include  salary,  benefits  and  bonuses.  These  increases  were  partially  offset  by  a  decrease  of  $0.7  million  in  stock-based 
compensation expenses primarily due to the cancellation of certain performance-based equity awards. Our R&D headcount 
was 449 employees as of December 31, 2013, compared with 388 employees as of December 31, 2012. 

Selling, General and Administrative 

Selling,  general  and  administrative  expenses  primarily  include  salary  and  benefit  expenses,  bonuses  and  stock-based 
compensation expenses for sales, marketing and administrative personnel, sales commissions, travel expenses, facilities costs, 
and professional service fees. 

Year Ended December 31,

Change

2014

From  
2013 to 
2013
2014 
2012
(in thousands, except percentages) 

From 
2012 to 
2013

Selling, general and administrative ("SG&A") ....   $
SG&A as a percentage of revenue .......................    

66,755      $
23.6%   

54,624      $
22.9%   

50,018        
23.4%    

22.2 %   

9.2%

SG&A expenses were $66.8 million, or 23.6% of revenue, for the year ended December 31, 2014 and $54.6 million, or 22.9% 
of revenue, for the year ended December 31, 2013. The $12.2 million increase in SG&A expenses was primarily due to an 
increase of $9.7 million in stock-based compensation expenses primarily associated with the performance-based and market-
based equity awards, an increase of $0.9 million in professional service fees primarily due to the acquisition of Sensima, an 

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increase of $0.5 million in cash compensation expenses, which include salary, benefits and bonuses, and an increase of $0.3 
million in commission expenses due to higher revenue. Our SG&A headcount was 274 employees as of December 31, 2014, 
compared to 249 employees as of December 31, 2013. 

SG&A expenses were $54.6 million, or 22.9% of revenue, for the year ended December 31, 2013 and $50.0 million, or 23.4% 
of revenue, for the year ended December 31, 2012. The $4.6 million increase in SG&A expenses was primarily due to an 
increase of $2.6 million in stock-based compensation expenses primarily associated with the performance-based awards, an 
increase of $1.8 million in cash compensation expenses, which include salary, benefits and bonuses, and an increase of $1.0 
million in commission expenses due to higher revenue. These increases were partially offset by a decrease of $1.1 million in 
professional service fees. Our SG&A headcount was 249 employees as of December 31, 2013, compared to 250 employees 
as of December 31, 2012. 

Litigation Benefit, Net 

Litigation benefit, net, was $(8.0) million for the year ended December 31, 2014, compared to litigation benefit, net, of $(0.4) 
million for the year ended December 31, 2013. Net litigation benefit for the year ended December 31, 2014 included the 
recognition of a $9.5 million award from the O2 Micro litigation, partially offset by $0.5 million of additional legal fees 
incurred in connection with the final resolution of the litigation. Net litigation benefit for the year ended December 31, 2013 
included $0.8 million of proceeds received in connection with the legal settlement with Silergy Corporation. The increase in 
net litigation benefit for the year ended December 31, 2014 was partially offset by higher expenses we incurred in other 
litigation matters, compared to the same period in 2013. 

Litigation benefit, net, was $(0.4) million for the year ended December 31, 2013, compared to litigation benefit, net, of $(2.9) 
million for the year ended December 31, 2012. The year-over-year decrease in litigation benefit was primarily due to $0.8 
million received in 2013 in connection with the settlement from Silergy, compared with $3.7 million received in 2012 in 
connection  with  settlements  from  Linear  and  Silergy.  No  further  amount  was  due  to  us  from  these  two  lawsuits  as  of 
December 31, 2013. 

For a complete description of our material litigation matters, see Note 13 “Litigation” of Notes to Consolidated Financial 
Statements. 

Interest and Other Income, Net 

For the years ended December 31, 2014, 2013 and 2012, interest and other income, net, was $1.1 million, $0.1 million and 
$0.6 million, respectively. Interest and other income, net increased from 2013 to 2014 primarily due to lower foreign currency 
exchange losses and higher interest income in 2014 compared to 2013. Interest and other income, net, decreased from 2012 
to 2013 primarily due to higher foreign currency exchange losses and lower interest income in 2013 compared to 2012.  

Income Tax Provision  

The income tax provision for the year ended December 31, 2014 was $0.9 million or 2.5% of our income before income 
taxes. This differs from the federal statutory rate primarily because our foreign income was taxed at lower rates and because 
of the benefit that we realized as a result of stock options exercised and restricted units released and changes in our valuation 
allowance during the year. 

The income tax provision for the year ended December 31, 2013 was $1.1 million or 4.6% of our income before income 
taxes. This differs from the federal statutory rate primarily because our foreign income was taxed at lower rates and because 
of the benefit that we realized as a result of stock options exercised and restricted units released and changes in our valuation 
allowance during the year. 

The income tax provision for the year ended December 31, 2012 was $2.1 million or 11.9% of our income before income 
taxes. This differs from the federal statutory rate primarily because our foreign income was taxed at lower rates. 

For additional information, see Note 11 “Income Taxes” of the Notes to Consolidated Financial Statements. 

33 

  
  
   
  
  
  
  
  
  
   
   
  
  
 
 
Liquidity and Capital Resources 

Cash and cash equivalents ...............................................................................................   $
Short-term investments ...................................................................................................    
Total cash, cash equivalents and short-term investments .........................................   $
Percentage of total assets ..................................................................................    

Total current assets ..........................................................................................................   $
Total current liabilities ....................................................................................................    
Working capital .................................................................................................   $

As of December 31,

2014 

2013

(In thousands) 

126,266      $ 
112,452        
238,718      $ 
59.8%     

308,146      $ 
(36,861)      
271,285      $ 

101,213   
125,126   
226,339   
61.4%

292,086   
(38,489) 
253,597   

As of December 31, 2014, we had cash and cash equivalents of $126.3 million and short-term investments of $112.5 million, 
compared with cash and cash equivalents of $101.2 million and short-term investments of $125.1 million as of December 31, 
2013. As of December 31, 2014, $56.4 million of cash and cash equivalents and $35.8 million of short-term investments 
were held by our international subsidiaries. If these funds are needed for our operations in the U.S., we may be required to 
accrue and pay U.S. taxes to repatriate these funds. However, our intent is to indefinitely reinvest these funds outside of the 
U.S. and our current plans do not demonstrate a need to repatriate them to fund our U.S. operations. 

The  significant  components  of  our  working  capital  are  cash  and  cash  equivalents,  short-term  investments,  accounts 
receivable, inventories, prepaid expenses and other current assets, reduced by accounts payable, accrued compensation and 
related benefits, and other accrued liabilities. As of December 31, 2014, we had working capital of $271.3 million, compared 
with working capital of $253.6 million as of December 31, 2013. The $17.7 million increase in working capital was due to a 
$16.1 million increase in current assets and a $1.6 million decrease in current liabilities. The increase in current assets was 
primarily due to an increase in cash and cash equivalents, an increase in inventory, and an increase in accounts receivable, 
partially offset by a decrease in short-term investments. The decrease in current liabilities was primarily due to a decrease in 
accrued  compensation  and  related  benefits,  and  a  decrease  in  other  accrued  liabilities,  partially  offset  by  an  increase  in 
accounts payable. 

Summary of Cash Flows  

The following table summarizes our cash flow activities: 

2014

Year Ended December 31,
2013 
(In thousands) 

2012

Net cash provided by operating activities ..........................................   $
Net cash used in investing activities ...................................................    
Net cash provided by (used in) financing activities ...........................    
Effect of exchange rate changes on cash and cash equivalents ..........    
Net increase (decrease) in cash and cash equivalents ..............   $

74,133     $
(9,367)    
(39,227)    
(486)    
25,053     $

60,686     $
(54,324 )     
18,850       
897       
26,109     $

24,912  
(26,837)
(19,553)
211  
(21,267)

For the year ended December 31, 2014, net cash provided by operating activities was $74.1 million, primarily due to our net 
income adjusted for certain non-cash items, including depreciation and amortization and stock-based compensation, and a 
net decrease of $8.0 million from the changes in our operating assets and liabilities. The increase in accounts receivable was 
primarily due to higher sales and an increase in shipments in the fourth quarter of 2014. The increase in inventories was 
primarily due to an increase in strategic wafer and die bank inventories as well as an increase in finished goods necessary to 
meet anticipated future demand. The increase in accounts payable was primarily driven by increased inventory and capital 
asset purchases to meet anticipated future demand. The decrease in accrued liabilities was primarily driven by the release of 
the  liability  related  to  the  O2  Micro  litigation,  partially  offset  by  an  increase  in  employee  contributions  to  the  deferred 
compensation plan. For the year ended December 31, 2013, net cash provided by operating activities was $60.7 million, 
primarily due to cash contributed from our operating results during the year and the cash payment received in connection 
with the O2 Micro litigation recorded as a liability as of December 31, 2013. These increases were partially offset by increases 
in  both  inventories  and  accounts  receivable.  The  increase  in  accounts  receivable  resulted  primarily  from  an  increase  in 
shipments. The increase in inventories was primarily due to an increase in strategic wafer and die bank inventories as well as 
finished goods to meet anticipated future demand. For the year ended December 31, 2012, net cash provided by operating 
34 

  
  
 
 
  
 
     
 
  
 
  
  
      
         
  
  
   
  
  
  
  
 
 
  
 
   
    
 
  
 
 
   
activities was $24.9 million, primarily reflecting cash contributed from our operating results, partially offset by $27.8 million 
increase in working capital requirements. 

For the year ended December 31, 2014, net cash used in investing activities was $9.4 million, primarily due to net cash of 
$11.6 million paid to acquire Sensima, purchases of property and equipment of $9.5 million, and net purchases of investments 
of $7.1 million, partially offset by proceeds of $4.7 million from the redemption of auction-rate securities. For the year ended 
December 31, 2013, net cash used in investing activities was $54.3 million, primarily reflecting net purchases of short-term 
investments  and  purchases  of  property  and  equipment,  partially  offset  by  proceeds  from  the  redemption  of  auction-rate 
securities.  For  the  year  ended  December  31,  2012,  net  cash  used  in  investing  activities  was  $26.8  million  related  to  our 
investment in equipment, building improvements at our new headquarters located in San Jose, California and net purchases 
of short-term investments, partially offset by proceeds from the redemption of auction-rate securities. 

For the year ended December 31, 2014, net cash used in financing activities was $39.2 million, primarily reflecting $41.2 
million used in repurchases of our common stock pursuant to our stock repurchase program and $11.7 million used to pay 
dividends to our stockholders and dividend equivalents to our employees who hold restricted stock units (“RSUs”), partially 
offset by $14.0 million of cash proceeds from stock option exercises and issuance of shares through our employee stock 
purchase plan. For the year ended December 31, 2013, net cash provided by financing activities was $18.9 million, primarily 
reflecting $40.0 million of cash proceeds from stock option exercises and issuance of shares through our employee stock 
purchase plan, partially offset by $20.6 million used in repurchases of our common stock pursuant to our stock repurchase 
program. For the year ended December 31, 2012, net cash used in financing activities was $19.6 million, primarily reflecting 
the $35.7  million  cash dividends paid  to stockholders  on December  28, 2012, partially  offset by $15.2  million of  cash 
proceeds from stock option exercises and issuance of shares through our employee stock purchase plan. 

In July 2013, our Board of Directors approved a stock repurchase program that authorizes us to repurchase up to $100 million 
in the aggregate of our common stock through June 30, 2015. All shares are retired upon repurchase. For the year ended 
December 31, 2014, we repurchased a total of 1.1 million shares for $41.2 million, at an average price of $39.19 per share. 
For the year ended December 31, 2013, we repurchased a total of 0.7 million shares for $20.6 million, at an average price of 
$31.06 per share. As of December 31, 2014, $38.2 million remained available for future repurchases under the program. 

In  June  2014,  our  Board  of  Directors  approved  a  dividend  program  pursuant  to  which  we  intend  to  pay  quarterly  cash 
dividends  on  our  common  stock.  In  addition,  RSU  awards  contain  rights  to  receive  dividend  equivalents,  which  entitle 
employees who hold RSUs to the same dividend value per share as holders of common stock. Dividend equivalents accrued 
on the RSUs are forfeited if the employees do not fulfill their service requirement during the vesting periods. For the year 
ended December 31,  2014,  we paid  dividends  and  dividend equivalents  totaling $11.7 million.  In  addition,  our  Board of 
Directors authorized dividend payments totaling $5.8 million to stockholders of record on December 31, 2014, which will be 
paid on January 15, 2015. 

Although cash requirements will fluctuate based on the timing and extent of many factors such as those discussed above, we 
believe that cash generated from operations, together with the liquidity provided by existing cash balances and short-term 
investments, will be sufficient to satisfy our liquidity requirements for the next 12 months. We anticipate the cash used for 
future dividends, dividend equivalents and the stock repurchase program will come from our current domestic cash and cash 
generated from ongoing U.S. operations. If cash held by our international subsidiaries is needed for these payments, we may 
be required to accrue and pay U.S. taxes to repatriate these funds. 

In the future, in order to strengthen our financial position, in the event of unforeseen circumstances, or in the event we need 
to fund our growth in future financial periods, we may need to raise additional funds by any one or a combination of the 
following: issuing equity securities, issuing debt or convertible debt securities, incurring indebtedness secured by our assets, 
or  selling  certain  product  lines  and/or  portions  of  our  business.  There  can  be  no  guarantee  that  we  will  be  able  to  raise 
additional funds on terms acceptable to us, or at all. 

From  time  to  time,  we  have  engaged  in  discussions  with  third  parties  concerning  potential  acquisitions  of  product  lines, 
technologies, businesses and companies, and we continue to consider potential acquisition candidates. Any such transactions 
could involve the issuance of a significant number of new equity securities, assumptions of debt, and/or payment of cash 
consideration.  We may also be required to raise additional funds to complete any such acquisition, through either the issuance 
of equity and debt securities or incurring indebtedness secured by our assets. If we raise additional funds or acquire businesses 
or  technologies  through  the  issuance  of  equity  securities  or  convertible  debt  securities,  our  existing  stockholders  may 
experience significant dilution.  

35 

  
   
  
   
  
  
  
   
 
 
Contractual Obligations  

The following table summarizes our contractual obligations at December 31, 2014 (in thousands): 

Operating leases ...................................................   $
Outstanding purchase commitments (1) ...............    
Other long-term obligations (2) ............................    
Total .....................................................................   $
______________ 

Payment Due by Period 

Total

Less Than
1 Year

1 - 3 Years

3 - 5 Years 

More Than 
5 years

2,322     $
44,203      
9,965      
56,490     $

1,094     $
42,123      
-     
43,217     $

1,060     $
480       
4,283       
5,823     $

130     $
300      
2,052      
2,482     $

38  
1,300  
3,630  
4,968  

(1)  Outstanding purchase commitments primarily consist of wafer purchases from our foundries, assembly services and

license arrangements.  

(2)  Other  long-term  obligations  include  future  cash  payments  to  satisfy  long-term  liabilities  reflected  in 
our  Consolidated  Balance  Sheets,  which  primarily  consist  of  employee  deferred  compensation  plan  liabilities,
contingent  consideration  related  to  the  Sensima  acquisition,  and  accrued  dividend  equivalents.  Because  of  the
uncertainty  as  to  the  timing  of  distributions  related  to  a  portion  of  the  employee  deferred  compensation  plan
liabilities, we have excluded estimated obligations of $0.2 million from the table above. In addition, because of the 
uncertainty as to the timing of payments related to our liabilities for unrecognized tax benefits, we have excluded
estimated obligations of $5.3 million from the table above.  

Off Balance Sheet Arrangements 

As  of  December  31,  2014,  we  had  no  off-balance  sheet  arrangements  as  defined in  Item  303(a)(4)  of  the  Securities  and 
Exchange Commission’s Regulation S-K. 

ITEM 7A.    QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK 

Interest Rate Risk 

Our cash equivalents and investments are subject to market risk, primarily interest rate and credit risk. Our investments are 
managed by outside professional managers within investment guidelines set by us. Such guidelines include security type, 
credit quality and maturity and are intended to limit market risk by restricting our investments to high quality debt instruments 
with relatively short-term maturities. Fluctuations in interest rates of 10% would not have a material impact on our results of 
operations. 

 We do not use derivative financial instruments in our investment portfolio. Investments in debt securities are classified as 
available-for-sale. For available-for-sale investments, no gains or losses are recognized by us in our results of operations due 
to changes in interest rates unless such securities are sold prior to maturity or are determined to be other-than-temporarily 
impaired. Available-for-sale investments are reported at fair value with the related unrealized gains or losses being included 
in accumulated other comprehensive income, a component of stockholders’ equity.  

Long-Term Investments 

As of December 31, 2014, all of our holdings in auction rate securities, which have a face value of $5.6 million, have failed 
to  reset  as  a  result  of  current  market  conditions.  Should  these  auctions  continue  to  fail  and  if  the  credit  rating  for  these 
securities decline, a 10% decline in the fair value could impact our results of operations by approximately $0.5 million. 

Foreign Currency Exchange Risk 

Our sales outside the United States are primarily transacted in U.S. dollars. Accordingly, our sales are not generally impacted 
by  foreign  currency  rate  changes.  The  functional  currency  of  the  Company’s  offshore  operations  is  the  local  currency, 
primarily the Renminbi, the New Taiwan Dollar and the Euro. In addition, we incur foreign currency exchange gains or losses 
related to the timing of payments for transactions between the U.S. and our foreign subsidiaries, which are reported in interest 
and other income. To date, fluctuations in foreign currency exchange rates have not had a material impact on our results of 
operations.   

36 

  
  
  
   
 
   
 
  
 
   
   
    
   
 
  
  
  
  
  
  
  
  
  
  
  
  
  
ITEM 8.     FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA 

MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED FINANCIAL STATEMENTS 

Contents 

Report of Independent Registered Public Accounting Firm ........................................................................................ 
Consolidated Balance Sheets ...................................................................................................................................... 
Consolidated Statements of Operations ...................................................................................................................... 
Consolidated Statements of Comprehensive Income .................................................................................................. 
Consolidated Statements of Stockholders’ Equity ...................................................................................................... 
Consolidated Statements of Cash Flows ..................................................................................................................... 
Notes to Consolidated Financial Statements ............................................................................................................... 

Page
38 
39 
40 
41 
42 
43 
44 

37 

  
  
  
   
  
  
  
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of 
Monolithic Power Systems, Inc. 
San Jose, California 

We have audited the accompanying consolidated balance sheets of Monolithic Power Systems, Inc. and subsidiaries (the 
"Company")  as  of  December  31,  2014  and  2013,  and  the  related  consolidated  statements  of  operations,  comprehensive 
income,  stockholders'  equity,  and  cash  flows  for  each  of  the  three  years  in  the  period  ended  December  31,  2014.  These 
financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on these 
financial statements based on our audits. 

We  conducted  our  audits  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial 
statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts 
and disclosures in the financial statements. An audit also includes assessing the accounting principles used and significant 
estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits 
provide a reasonable basis for our opinion. 

In  our  opinion,  such  consolidated  financial  statements  present  fairly,  in  all  material  respects,  the  financial  position  of 
Monolithic Power Systems, Inc. and subsidiaries as of December 31, 2014 and 2013, and the results of their operations and 
their cash flows for each of the three years in the period ended December 31, 2014, in conformity with accounting principles 
generally accepted in the United States of America. 

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
the Company's internal control over financial reporting as of December 31, 2014, based on the criteria established in Internal 
Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission, 
and  our  report  dated  March  2,  2015  expressed  an  unqualified  opinion  on  the  Company's  internal  control  over  financial 
reporting. 

/s/ DELOITTE & TOUCHE LLP 

San Jose, California 
March 2, 2015 

38 

  
  
  
  
  
  
  
  
   
  
  
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED BALANCE SHEETS 
(in thousands, except par value) 

  December 31,      December 31,  

2014 

2013

ASSETS 
Current assets: 

Cash and cash equivalents ............................................................................................  $
Short-term investments .................................................................................................   
Accounts receivable, net  ..............................................................................................   
Inventories ....................................................................................................................   
Prepaid expenses and other current assets ....................................................................   
Total current assets ....................................................................................................   
Property and equipment, net .............................................................................................   
Long-term investments .....................................................................................................   
Goodwill ...........................................................................................................................   
Acquisition-related intangible assets, net .........................................................................   
Deferred tax assets, net.....................................................................................................   
Other long-term assets ......................................................................................................   
Total assets ................................................................................................................  $

LIABILITIES AND STOCKHOLDERS’ EQUITY
Current liabilities: 

Accounts payable ..........................................................................................................  $
Accrued compensation and related benefits .................................................................   
Accrued liabilities .........................................................................................................   
Total current liabilities ..............................................................................................   
Deferred tax and other tax liabilities ................................................................................   
Other long-term liabilities ................................................................................................   
Total liabilities ..........................................................................................................   

Commitments and contingencies (notes 11, 12 and 13) 
Stockholders' equity: 

Common stock, $0.001 par value; shares authorized:  150,000; shares issued and 

outstanding: 38,832 and 38,291 as of December 31, 2014 and December 31, 2013, 
respectively ...............................................................................................................   
Retained earnings  ........................................................................................................   
Accumulated other comprehensive income ..................................................................   
Total stockholders’ equity .........................................................................................   
Total liabilities and stockholders’ equity ..................................................................  $

126,266     $ 
112,452       
25,630       
40,918       
2,880       
308,146       
62,942       
5,389       
6,571       
6,812       
1,049       
8,457       
399,366     $ 

13,138     $ 
9,020       
14,703       
36,861       
5,876       
10,204       
52,941       

101,213  
125,126  
23,730  
39,737  
2,280  
292,086  
64,837  
9,860  
- 
- 
481  
1,644  
368,908  

10,694  
10,419  
17,376  
38,489  
5,542  
1,478  
45,509  

240,500       
100,114       
5,811       
346,425       
399,366     $ 

234,201  
82,938  
6,260  
323,399  
368,908  

See accompanying notes to consolidated financial statements. 

39 

  
  
  
 
    
 
     
       
 
      
        
 
  
      
        
 
     
       
 
      
        
 
      
        
 
      
        
 
  
   
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF OPERATIONS 
(in thousands, except per share amounts) 

Year Ended December 31,
2013 

2014

2012

Revenue  .............................................................................................   $
Cost of revenue  .................................................................................    
Gross profit  .............................................................................    

Operating expenses: 

Research and development  ............................................................    
Selling, general and administrative  ................................................    
Litigation benefit, net .....................................................................    
Total operating expenses  ........................................................    
Income from operations  ....................................................................    
Interest and other income, net ............................................................    
Income before income taxes  ..............................................................    
Income tax provision  .........................................................................    
Net income  ........................................................................................   $

282,535     $
129,917      
152,618      

58,590      
66,755      
(8,027)    
117,318      
35,300      
1,092      
36,392      
897      
35,495     $

238,091     $
110,190       
127,901       

49,733       
54,624       
(371 )     
103,986       
23,915       
92       
24,007       
1,109       
22,898     $

Net income per share: 

Basic ............................................................................................   $
Diluted ........................................................................................   $

0.92     $
0.89     $

0.61     $
0.59     $

Weighted-average shares outstanding: 

Basic ............................................................................................    
Diluted ........................................................................................    

38,686      
39,793      

37,387       
38,620       

213,813  
100,665  
113,148  

48,796  
50,018  
(2,945)
95,869  
17,279  
611  
17,890  
2,134  
15,756  

0.45  
0.43  

34,871  
36,247  

Cash dividends declared per common share ......................................   $

0.45     $

-     $

1.00  

See accompanying notes to consolidated financial statements. 

40 

  
  
 
 
  
 
   
    
 
      
        
        
 
  
      
        
        
 
      
        
        
 
      
        
        
 
  
      
        
        
 
  
  
  
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME 
(in thousands) 

Net income  ........................................................................................   $
Other comprehensive income (loss), net of tax: 

Change in unrealized losses on auction-rate securities, net of $0 

Year Ended December 31,
2013 

2014

2012

35,495     $

22,898     $

15,756  

tax in 2014, 2013 and 2012 .....................................................    

179      

130       

140  

Change in unrealized gains/losses on other available-for-sale 

securities, net of $0 tax in 2014, 2013 and 2012  ....................    
Foreign currency translation adjustments ...................................    
Total other comprehensive income (loss), net of tax ..........................    
Comprehensive income  .................................................................   $

(19)    
(609)    
(449)    
35,046     $

(33 )     
1,988       
2,085       
24,983     $

34  
408  
582  
16,338  

See accompanying notes to consolidated financial statements. 

41 

  
  
 
 
  
 
   
    
 
      
        
        
 
  
  
   
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY 
(in thousands) 

Common Stock

  Shares

   Amount    Earnings   

   Accumulated       
Other 
   Retained   Comprehensive    Stockholders’ 
Income 

Equity

Total

Balance as of January 1, 2012 ...........................  
Net income ...........................................................   
Other comprehensive income ...............................   
Dividends declared ...............................................   
Exercise of stock options and related tax benefits   
Shares issued under the employee stock 

purchase plan .....................................................   
Stock-based compensation expense .....................   
Release of restricted stock ....................................   
Balance as of December 31, 2012 ......................  
Net income ...........................................................   
Other comprehensive income ...............................   
Exercise of stock options and related tax benefits   
Repurchase of common shares .............................   
Shares issued under the employee stock 

purchase plan .....................................................   
Stock-based compensation expense .....................   
Release of restricted stock  ...................................   
Balance as of December 31, 2013 ......................  
Net income ...........................................................   
Other comprehensive loss ....................................   
Dividends and dividend equivalents declared ......   
Exercise of stock options and related tax benefits   
Repurchase of common shares .............................   
Shares issued under the employee stock 

purchase plan .....................................................   
Stock-based compensation expense .....................   
Release of restricted stock  ...................................   
Balance as of December 31, 2014 ......................  

33,826   $ 159,336   $
-   
-   
-   
14,232    

-   
-   
-   
1,152    

79,948   $
15,756    
-   
(35,664)  
-   

152    
-   
543    
35,673    
-   
-   
2,446    
(664)  

111    
-   
725    
38,291    
-   
-   
-   
742    
(1,051)  

1,852    
18,659    
-   
194,079    
-   
-   
37,877    
(20,615)  

2,145    
20,715    
-   
234,201    
-   
-   
-   
11,960    
(41,198)  

-   
-   
-   
60,040    
22,898    
-   
-   
-   

-   
-   
-   
82,938    
35,495    
-   
(18,319)  
-   
-   

78    
-   
772    

-   
-   
-   
38,832   $ 240,500   $ 100,114   $

2,078    
33,459    
-   

3,593     $
-     
582      
-     
-     

-     
-     
-     
4,175      
-     
2,085      
-     
-     

-     
-     
-     
6,260      
-     
(449)    
-     
-     
-     

-     
-     
-     
5,811     $

242,877  
15,756  
582  
(35,664)
14,232  

1,852  
18,659  
- 
258,294  
22,898  
2,085  
37,877  
(20,615)

2,145  
20,715  
- 
323,399  
35,495  
(449)
(18,319)
11,960  
(41,198)

2,078  
33,459  
- 
346,425  

See accompanying notes to consolidated financial statements. 

42 

  
  
  
 
   
 
   
 
 
 
  
  
 
   
 
   
 
  
    
 
  
 
  
    
 
  
  
  
 
 
MONOLITHIC POWER SYSTEMS, INC. 
CONSOLIDATED STATEMENTS OF CASH FLOWS 
(in thousands) 

Cash flows from operating activities: 
Net income  .............................................................................................   $
Adjustments to reconcile net income to net cash provided by operating 

activities: 
Depreciation and amortization of tangible and intangible assets .........    
Loss on disposal of property and equipment .......................................    
Amortization and realized gains/losses on investments .......................    
Deferred taxes, net ...............................................................................    
Excess tax benefit from equity awards ................................................    
Stock-based compensation ..................................................................    
Changes in operating assets and liabilities, net of effects of an 

acquisition: 
Accounts receivable ..........................................................................   
Inventories ........................................................................................   
Prepaid expenses and other assets ....................................................   
Accounts payable ..............................................................................   
Accrued liabilities .............................................................................   
Tax liabilities ....................................................................................   
Accrued compensation and related benefits ......................................   
Net cash provided by operating activities .....................................   

Cash flows from investing activities: 

Property and equipment purchases ......................................................    
Proceeds from sale of property and equipment ...................................    
Purchases of short-term investments ...................................................    
Proceeds from sale of short-term investments .....................................    
Proceeds from sale of long-term investments ......................................    
Premiums paid on deferred compensation plan ...................................    
Change in restricted assets ...................................................................    
Cash paid for an acquisition, net of cash acquired ..............................    
Net cash used in investing activities .............................................   

Cash flows from financing activities: 

Property and equipment purchased on extended payment terms .........    
Proceeds from exercise of stock options .............................................    
Proceeds from shares issued under the employee stock purchase plan    
Repurchases of common shares ...........................................................    
Dividends and dividend equivalents paid ............................................    
Excess tax benefits from equity awards ...............................................    
Net cash provided by (used in) financing activities ......................   
Effect of change in exchange rates ..........................................................    
Net increase (decrease) in cash and cash equivalents ..............................    
Cash and cash equivalents, beginning of period......................................    
Cash and cash equivalents, end of period ................................................   $

Year Ended December 31,
2013 

2012

2014

35,495     $

22,898     $ 

15,756  

13,130      
-     
96      
17     
(10)    
33,454      

(1,870)    
(1,142)    
(2,029)    
1,632      
(3,102)    
(248 )    
(1,290)    
74,133      

(9,511)    
-     
(136,872)    
149,291      
4,650      
(5,335)    
-     
(11,590)    
(9,367)    

(400)    
11,941      
2,078      
(41,198)    
(11,658)    
10      
(39,227)    
(486)    
25,053      
101,213      
126,266     $

12,160       
31       
443       
(81 )     
-       
20,701       

(4,347 )     
(7,606 )     
121       
1,440       
12,149       
86       
2,691       
60,686       

(15,764 )     
88       
(125,756 )     
85,700       
2,025       
(617 )     
-       
-       
(54,324 )     

(557 )     
37,877       
2,145       
(20,615 )     
-       
-       
18,850       
897       
26,109       
75,104       
101,213     $ 

9,332  
81  
214  
(8)
(869)
18,652  

(4,286)
(12,004)
(456)
754  
(2,097)
1,476  
(1,633)
24,912  

(21,059)
13  
(143,094)
135,183  
2,100  
- 
20  
- 
(26,837)

- 
13,390  
1,852  
- 
(35,664)
869  
(19,553)
211  
(21,267)
96,371  
75,104  

Supplemental disclosures for cash flow information: 

Cash paid for taxes ..............................................................................   $

1,235     $

1,116     $ 

807  

Supplemental disclosures of non-cash investing and financing 

activities: 
Liability accrued for property and equipment purchases .....................   $
Liability accrued for dividends and dividend equivalents  ..................   $
Fair value of contingent consideration related to an acquisition .........   $

1,487     $
6,660     $
2,507     $

1,941     $ 
-     $ 
-     $ 

1,728  
- 
- 

See accompanying notes to consolidated financial statements. 

43 

  
  
 
 
  
 
   
    
 
  
      
        
        
 
     
       
       
 
      
        
        
 
      
        
        
 
     
       
       
 
     
       
       
 
  
   
      
        
  
      
        
        
 
      
        
        
 
  
  
MONOLITHIC POWER SYSTEMS, INC. 
NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 

1.  SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES 

Business  

Monolithic Power Systems, Inc. (“MPS” or the “Company”) was incorporated in the State of California on August 22, 1997. 
On November 17, 2004, the Company was reincorporated in the State of Delaware. MPS designs, develops and markets 
integrated power semiconductor solutions and power delivery architectures. MPS's mission is to provide innovative power 
solutions in cloud computing, telecommunications, industrial and automotive, and consumer market segments.  

Basis of Presentation  

The consolidated financial statements include the accounts of the Company and its wholly owned subsidiaries. All significant 
intercompany accounts and transactions have been eliminated in consolidation. 

Use of Estimates  

The preparation of financial statements in conformity with accounting principles generally accepted in the United States of 
America (“GAAP”) requires management to make estimates and assumptions that affect the reported amounts of assets and 
liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and reported amounts of 
revenue and expenses during the reporting period. Significant estimates and assumptions used in these consolidated financial 
statements  primarily  include  those  related  to  revenue  recognition,  inventory  valuation,  valuation  of  stock-based  awards, 
valuation of goodwill and acquisition-related intangible assets, contingencies and tax valuation allowances. Actual results 
could differ from those estimates. 

Certain Significant Risks and Uncertainties  

Financial instruments which potentially subject the Company to concentrations of credit risk consist primarily of cash and 
cash equivalents, short-term and long-term investments and accounts receivable. The Company’s cash consists of checking 
and  savings  accounts.  The  Company’s  cash  equivalents  include  short-term,  highly  liquid  investments  purchased  with 
remaining maturities at the date of purchase of three months or less. The Company’s short-term investments consist primarily 
of  certificates  of  deposit  and  government  agencies  and  treasuries  and  the  long-term  investments  consist  of  government-
backed student loan auction-rate securities. The Company generally does not require its customers to provide collateral or 
other security to support accounts receivable. To manage credit risk, management performs ongoing credit evaluations of its 
customers’ financial condition.  The Company requires cash in advance for certain customers in addition to ongoing credit 
evaluations  for  those  where  credit  has  been  extended.  Accounts  receivable  allowances  were  not  material  in  any  periods 
presented. 

The Company participates in the dynamic high technology industry and believes that changes in any of the following areas 
could have a material adverse effect on its future financial position, results of operations or cash flows: advances and trends 
in new technologies and industry standards; competitive pressures in the form of new products or price reductions on current 
products; changes in product mix; changes in the overall demand for products offered by the Company; changes in third-
party manufacturers; changes in key suppliers; changes in certain strategic relationships or customer relationships; litigation 
or claims against the Company based on intellectual property, patent, product, regulatory or other factors; fluctuations in 
foreign  currency  exchange  rates;  risk  associated  with  changes  in  domestic  and  international  economic  and/or  political 
regulations;  availability  of  necessary  components  or  subassemblies;  availability  of  foundry  capacity;  ability  to  integrate 
acquired companies; and the Company’s ability to attract and retain employees necessary to support its growth. 

Foreign Currency   

The  functional  currency  of  the  Company’s  international  subsidiaries  is  primarily  the  local  currency.  The  majority  of  the 
subsidiaries is located in China and Taiwan, which utilize the Renminbi and the New Taiwan Dollar as their currencies, 
respectively. Accordingly, assets and liabilities of the foreign subsidiaries are translated using exchange rates in effect at the 
end of the period. Revenue and costs are translated using average exchange rates for the period. The resulting translation 
adjustments are presented as a separate component of accumulated other comprehensive income in stockholders’ equity in 
the Consolidated Balance Sheets. In addition, the Company incurs foreign currency exchange gains or losses related to the 
timing of payments for transactions between the U.S. and its subsidiaries. Foreign currency transaction gains (losses) are 
44 

  
  
  
  
  
  
  
  
  
  
  
  
reported  in  interest  and  other  income,  net,  in  the  Consolidated  Statements  of  Operations  and  totaled  $0.1  million,  $(0.6) 
million and $(0.1) million for the years ended December 31, 2014, 2013 and 2012, respectively. 

Cash and Cash Equivalents  

The Company classifies all highly liquid investments with stated maturities of three months or less from date of purchase as 
cash equivalents. 

Fair Value of Financial Instruments 

Fair value is estimated by applying the following hierarchy, which prioritizes the inputs used to measure fair value into three 
levels and bases the categorization within the hierarchy upon the lowest level of input that is available and significant to the 
fair value measurement:  

Level 1: Quoted prices in active markets for identical assets 
Level 2: Significant other observable inputs 
Level 3: Significant unobservable inputs 

The  Company’s  financial  instruments  include  cash  and  cash  equivalents,  short-term  and  long-term  investments.  Cash 
equivalents are stated at cost, which approximates fair market value. The Company’s short-term and long-term investments 
are classified as available-for-sale securities and are stated at their fair market value. 

The Company determines whether an impairment is temporary or other-than temporary. Unrealized gains or losses that are 
deemed to be temporary are recorded as a component of accumulated other comprehensive income in stockholder’s equity 
in the Consolidated Balance Sheets, and changes in unrealized gains or losses are recorded in the Consolidated Statements 
of Comprehensive Income. The Company records an impairment charge in interest and other income, net, in the Consolidated 
Statements of Operations when an available-for-sale investment has experienced a decline in value that is deemed to be other-
than-temporary. Other-than-temporary impairment exists when the Company either has the intent to sell the security, it will 
more likely than not be required to sell the security before anticipated recovery, or it does not expect to recover the entire 
amortized cost basis of the security.  

At December 31, 2014, the fair value of the Company’s holdings in auction-rate securities was $5.4 million, all of which was 
classified as long-term available-for-sale investments. The valuation of the auction-rate securities is subject to fluctuations 
in the future, which will depend on many factors, including the quality of the underlying collateral, estimated time to liquidity 
including potential to be called or restructured, underlying final maturity, insurance guaranty and market conditions, among 
others. 

Inventories  

Inventories are stated at the lower of standard cost (which approximates actual cost determined on a first-in first-out basis) 
or current market value. The Company writes down excess and obsolete inventory based on its age and forecasted demand, 
which includes estimates taking into consideration the Company’s outlook on market and economic conditions, technology 
changes, new product introductions and changes in strategic direction. Actual demand may differ from forecasted demand 
and such differences may have a material effect on recorded inventory values. Inventory write-downs are not reversed until 
the related inventories have been sold. 

Property and Equipment  

Property and equipment are stated at cost. Depreciation is computed using the straight-line method over the estimated useful 
lives of the assets. Buildings and building improvements have a depreciation life of 30 to 40 years. Leasehold improvements 
are amortized over the shorter of the estimated useful life or the lease period.  Computer, software and equipment have a 
depreciation life of three to seven years. Transportation equipment has a depreciate life of 5 to 15 years. Furniture and fixtures 
have a depreciation life of three to five years.  

45 

  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
Goodwill and Acquisition-Related Intangible Assets 

Goodwill represents the excess of the fair value of purchase consideration over the fair value of net tangible and identified 
intangible assets as of the date of acquisition. In-process research and development (“IPR&D”) assets represent the fair value 
of incomplete R&D projects that had not reached technological feasibility as of the date of acquisition. The IPR&D assets are 
initially capitalized at fair value as intangible assets with indefinite lives. When the IPR&D projects are completed, they are 
reclassified as amortizable intangible assets and are amortized over their estimated useful lives. Alternatively, if the IPR&D 
projects are abandoned, they are impaired and expensed to research and development.  

Acquisition-related  intangible  assets  with  finite  lives  consist  of  know-how  and  developed  technologies.  These  assets  are 
amortized on a straight-line basis over estimated useful lives ranging from three to five years and the amortization expense 
is recorded in cost of revenue in the Consolidated Statements of Operations. 

Other Long-Term Assets  

Other assets primarily consist of intangible assets for the land use rights in Chengdu, China, purchased patents, long-term 
lease deposits and deferred compensation plan investments. We amortize the land use rights over 50 years and the purchased 
patents over five years. 

Impairment of Long-Lived Assets  

The Company evaluates long-lived assets, other than goodwill and acquisition-related intangible assets with indefinite useful 
lives, for impairment whenever events or changes in circumstances indicate that the carrying amount of an asset may not be 
recoverable. An impairment loss would be recognized when the sum of the undiscounted future net cash flows expected to 
result from the use of the asset and its eventual disposition is less than its carrying amount. Such impairment loss would be 
measured as the difference between the carrying amount of the asset and its fair value based on the present value of estimated 
future cash flows. 

The Company tests goodwill for impairment at least annually, or whenever events or changes in circumstances indicate that 
the goodwill may be impaired. The Company has elected to first assess the qualitative factors to determine whether it is more 
likely than not that the fair value of the reporting unit is less than its carrying amount. If the Company determines that it is 
more  likely  than  not  that  its  fair  value  is  less  than  the  carrying  amount,  then  the  two-step  goodwill  impairment  test  is 
performed. The first step compares the fair value of the reporting unit with its carrying amount. If the carrying amount exceeds 
its fair value, the second step measures the impairment loss by comparing the implied fair value of the goodwill with the 
carrying amount. As of December 31, 2014, no impairment of goodwill has been identified.   

Deferred Compensation Plan  

The Company has a non-qualified, unfunded deferred compensation plan, which provides certain key employees, including 
executive management, with the ability to defer the receipt of compensation in order to accumulate funds for retirement on a 
tax  deferred  basis.  The  Company  does  not  make  contributions  to  the  plan  or  guarantee  returns  on  the  investments.  The 
Company is responsible for the plan’s administrative expenses. Participants’ deferrals and investment gains and losses remain 
as the Company’s liabilities and the underlying assets are subject to claims of general creditors.  

The liabilities for compensation deferred under the plan are recorded at fair value in each reporting period and are included 
in other long-term liabilities in the Consolidated Balance Sheets. Changes in the fair value of the liabilities are recorded as 
an operating expense (credit) in the Consolidated Statements of Operations. The Company manages the risk of changes in 
the fair value of the liabilities by electing to match the liabilities with investments that offset a substantial portion of the 
exposure. The investments are recorded in other long-term assets in the Consolidated Balance Sheets at the cash surrender 
value of the corporate-owned life insurance policies and at the fair value of the mutual fund investments, which are classified 
as trading securities. Changes in the cash surrender value of the corporate-owned life insurance policies and the fair value of 
mutual fund investments are included in interest and other income, net in the Consolidated Statements of Operations. As of 
December 31, 2014 and 2013, the plan assets totaled $6.1 million and $0.6 million, and the plan liabilities totaled $6.2 million 
and $0.6 million, respectively. 

46 

  
  
  
  
  
  
  
  
  
  
  
 
 
Warranty Reserves  

The Company generally provides a one to two-year warranty against defects in materials and workmanship and will either 
repair the goods or provide replacement products at no charge to the customer for defective products. Reserve requirements 
are recorded in the period of sale and are based on an assessment of the products sold with warranty and historical warranty 
costs  incurred.  Historically,  the  warranty  expenses  have  not  been  material  to  the  Company’s  consolidated  financial 
statements.  

Revenue Recognition  

The Company recognizes revenue when the following four basic criteria are met: (1) persuasive evidence of an arrangement 
exists; (2) delivery has occurred or services have been rendered; (3) the fee is fixed or determinable; and (4) collectability is 
reasonably assured. Determination of criteria (3) and (4) are based on management’s judgment regarding the fixed nature of 
the fees charged for products delivered and the collectability of those fees. The application of these criteria has resulted in 
the Company generally recognizing revenue upon shipment (when title passes) to customers, including distributors, original 
equipment manufacturers and electronic manufacturing service providers.  

The Company’s revenue consists primarily of sales of assembled and tested finished goods. The Company also sells die in 
wafer form  to its  customers and value-added resellers,  and the  Company receives  royalty  revenue from  third  parties  and 
value-added resellers. 

For  the  years  ended  December  31,  2014  and  2013,  approximately  92%  and  91%  of  the  Company’s  distributor  sales, 
respectively, including sales to the Company’s value-added resellers, were made through distribution arrangements with third 
parties. These arrangements do not include any special payment terms (the Company’s normal payment terms are 30-45 days 
for its distributors), price protection or exchange rights. Returns are limited to the Company’s standard product warranty. 
Certain of the Company’s large distributors have contracts that include limited stock rotation rights that permit the return of 
a small percentage of the previous six months’ purchases. 

For the years ended December 31, 2014 and 2013, approximately 8% and 9% of the Company’s distributor sales, respectively, 
were made through small distributors primarily based on purchase orders. These distributors typically have no stock rotation 
rights. 

The Company generally recognizes revenue upon shipment of products to the distributors for the following reasons: 

(1)  The price is fixed or determinable at the date of sale. The Company does not offer special payment terms, price

protection or price adjustments to distributors when the Company recognizes revenue upon shipment. 

(2)  The  distributors  are  obligated  to  pay  the  Company  and  this  obligation  is  not  contingent  on  the  resale  of  the 

Company’s products. 

(3)  The distributors’ obligation is unchanged in the event of theft or physical destruction or damage to the products. 
(4)  The distributors have stand-alone economic substance apart from the Company’s relationship. 
(5)  The Company does not have any obligations for future performance to directly bring about the resale of its products

by the distributors. 

(6)  The  amount  of  future  returns  can  be  reasonably  estimated.  The  Company  has  the  ability  and  the  information 
necessary to track inventory sold to and held at its distributors. The Company maintains a history of returns and
has the ability to estimate the stock rotation returns on a quarterly basis. 

The  Company  maintains  a  sales  reserve  for  stock  rotation rights, which  is based on historical  experience of  actual  stock 
rotation returns on a per distributor basis, where available, and information related to products in the distribution channel. 
This  reserve  is  recorded  at  the  time  of  sale.  Historically,  these  returns  were  not  material  to  the  Company’s  consolidated 
financial statements.   

 If the Company enters into arrangements that have rights of return that are not estimable, the Company recognizes revenue 
under such arrangements only after the distributors have sold the products to end customers. Three of the Company’s U.S. 
distributors have distribution agreements where revenue is recognized upon sale by these distributors to their end customers 
because these distributors have certain rights of return which management believes are not estimable. The deferred revenue 
balance from  these  distributors  as  of  December  31, 2014  and 2013  was  $2.0  million and $1.7  million,  respectively.  The 
deferred costs as of December 31, 2014 and 2013 were $0.2 million. 

47 

  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
Stock-Based Compensation  

The Company measures the cost of employee services received in exchange for an award of equity instruments based on the 
grant-date fair value of the award. The Company uses the Black-Scholes model to estimate the fair value of its options and 
shares issued under employee stock purchase plan. The fair value of time-based and performance-based restricted stock units 
is based on the grant date share price. The fair value of market-based restricted stock units is estimated using a Monte Carlo 
simulation model. 

The Company recognizes compensation expense equal to the grant-date fair value for all share-based payment awards that 
are expected to vest. This expense is recorded on a straight-line basis over the requisite service period of the entire awards, 
unless the awards are subject to performance or market conditions, in which case the Company recognizes compensation 
expense over the requisite service period of each separate vesting tranche. For the performance-based awards, the Company 
recognizes compensation expense when it becomes probable that the performance criteria set by the Board of Directors will 
be achieved. For the market-based awards, compensation expense is not reversed if the market condition is not satisfied. The 
amount  of  stock-based  compensation  that  the  Company  recognizes  is  based  on  an  expected  forfeiture  rate.  If  there  is  a 
difference between the forfeiture assumptions used in determining stock-based compensation costs and the actual forfeitures 
which become known over time, the Company may change the forfeiture rate, which could have a significant impact on its 
stock-based compensation expense. 

Research and Development  

Costs incurred in research and development are expensed as incurred. 

Accounting for Income Taxes  

The Company recognizes federal, state and foreign current tax liabilities or assets based on its estimate of taxes payable or 
refundable in the current fiscal year by tax jurisdiction. The Company also recognizes federal, state and foreign deferred tax 
assets or liabilities for its estimate of future tax effects attributable to temporary differences and carryforwards. The Company 
records a valuation allowance to reduce any deferred tax assets by the amount of any tax benefits that, based on available 
evidence and judgment, are not expected to be realized. 

The Company’s calculation of current and deferred tax assets and liabilities is based on certain estimates and judgments and 
involves dealing with uncertainties in the application of complex tax laws. The Company’s estimates of current and deferred 
tax assets and liabilities may change based, in part, on added certainty or finality or uncertainty to an anticipated outcome, 
changes in accounting or tax laws in the U.S. or foreign jurisdictions where the Company operates, or changes in other facts 
or circumstances. In addition, the Company recognizes liabilities for potential U.S. and foreign income tax for uncertain 
income tax positions taken on its tax returns if it has less than a 50% likelihood of being sustained. If the Company determines 
that payment of these amounts is unnecessary or if the recorded tax liability is less than its current assessment, the Company 
may be required to recognize an income tax benefit or additional income tax expense in its financial statements in the period 
such  determination  is  made.  The  Company  has  calculated  its  uncertain  tax  positions  which  were  attributable  to  certain 
estimates and judgments primarily related to transfer pricing, cost sharing and its international tax structure exposure. 

Contingencies 

The Company is a party to actions and proceedings incident to its business in the ordinary course of business, including 
litigation regarding the Company’s intellectual property, challenges to the enforceability or validity of its intellectual property 
and claims that its products infringe on the intellectual property rights of others. The pending proceedings involve complex 
questions of fact and law and will require the expenditure of significant funds and the diversion of other resources to prosecute 
and defend. In addition, from time to time, the Company becomes aware that it is subject to other contingent liabilities. When 
this occurs, the Company will evaluate the appropriate accounting for the potential contingent liabilities to determine whether 
a contingent liability should be recorded. In making this determination, management may, depending on the nature of the 
matter, consult with internal and external legal counsel and technical experts. Based on the facts and circumstances in each 
matter, the Company uses its judgment to determine whether it is probable that a contingent loss has occurred and whether 
the amount of such loss can be estimated. If the Company determines a loss is probable and estimable, the Company records 
a contingent loss. In determining the amount of a contingent loss, the Company takes into account advice received from 
experts for each specific matter regarding the status of legal proceedings, settlement negotiations, prior case history and other 
factors. Should the judgments and estimates made by management need to be adjusted as additional information becomes 
available, the Company may need to record additional contingent losses. Alternatively, if the judgments and estimates made 

48 

  
  
  
  
    
  
  
  
  
by management are adjusted, for example, if a particular contingent loss does not occur, the contingent loss recorded would 
be reversed. 

Litigation Expense (Benefit)  

The Company records litigation costs in the period in which they are incurred. Due to the uncertainties inherent in litigation 
proceedings, the Company generally recognizes the proceeds resulting from settlement of litigation or favorable judgments 
when the cash is received and there is no further contingency related to the litigation. The proceeds are recorded as a reduction 
against litigation expense to the extent that litigation costs were previously incurred in the related case. Proceeds in excess of 
cumulative  costs  incurred  for  the  case  is  recorded  in  interest  and  other  income,  net,  in  the  Consolidated  Statements  of 
Operations. Litigation expense (benefit), net, includes primarily patent litigation and other contract-related matters. 

Comprehensive Income 

Comprehensive  income  represents  the  change  in  the  Company’s  net  assets  during  the  period  from  non-owner  sources. 
Accumulated other comprehensive income presented in the Consolidated Balance Sheets primarily consists of unrealized 
gains and losses related to available-for-sale investments and foreign currency translation adjustments. 

Recent Accounting Pronouncements 

In July 2013, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2013-
11, Presentation of an Unrecognized Tax Benefit When a Net Operating Loss Carryforward, a Similar Tax Loss, or a Tax 
Credit  Carryforward  Exists.  The  standard  gives  guidance  on  the  financial  statement  presentation  of  an  unrecognized  tax 
benefit when a net operating loss carryforward, a similar tax loss, or a tax credit carryforward exists, with the purpose of 
reducing diversity in practice. This new standard requires the netting of unrecognized tax benefits against a deferred tax asset 
for a loss or other carryforward that would apply in settlement of the uncertain tax positions. The Company adopted this 
standard  in  the  first  quarter  of  2014  prospectively  and  the  adoption  did  not  have  an  impact  on  its  consolidated  financial 
position, results of operations or cash flows. 

In  May  2014,  the  FASB  issued  ASU  No.  2014-09,  Revenue  from  Contracts  with  Customers,  which  outlines  a  single 
comprehensive model for entities to use in accounting for revenue arising from contracts with customers. The standard’s core 
principle is that an entity will recognize revenue when it transfers promised goods or services to customers in an amount that 
reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. Under the new 
standard, entities will apply the following five-step model when evaluating revenue contracts with customers: 

(1)  Identify the contract with a customer. 
(2)  Identify the performance obligations in the contract. 
(3)  Determine the transaction price. 
(4)  Allocate the transaction price to the performance obligations in the contract. 
(5)  Recognize revenue when the entity satisfies a performance obligation. 

The new standard is effective for annual and interim reporting periods beginning after December 15, 2016. Entities have the 
option  of  using  either  a  full  retrospective  or  a  modified  retrospective  application  in  the  adoption  of  this  standard.  The 
Company will adopt the standard in the first quarter of 2017 and is evaluating the transition method and the impact of the 
adoption on its consolidated financial position, results of operations and cash flows. 

2. ACQUISITION 

On  July  22,  2014  (the  “Acquisition  Date”),  the  Company  acquired  100%  of  the  outstanding  capital  stock  of  Sensima 
Technology  SA  (“Sensima”),  a  company  based  in  Switzerland  that  develops  magnetic  sensor  technologies  for  angle 
measurements as well as three-dimensional magnetic field sensing. The acquisition is expected to create new opportunities 
with customers by offering enhanced solutions in power management for key industries such as automotive, industrial and 
cloud  computing.  Subsequent  to  the  Acquisition  Date,  Sensima  became  a  subsidiary  of  the  Company  and  its  results  of 
operations have been included in the Company’s consolidated financial statements. 

49 

  
  
  
  
  
  
  
    
  
  
  
  
  
  
  
  
  
 
 
Purchase Consideration 

The fair value of the purchase consideration consists of the following (in thousands): 

Cash paid at the Acquisition Date .........................................................................................................    $ 
Contingent consideration ......................................................................................................................      
Total ......................................................................................................................................................    $ 

11,735  
2,507  
14,242  

Cash paid at the Acquisition Date included $1.2 million that is being held in an escrow account for a one-year period, which 
is subject to Sensima’s satisfaction of certain representations and warranties. 

The contingent consideration arrangement requires the Company to pay up to an additional $8.9 million to former Sensima 
shareholders if Sensima achieves a new product introduction as well as certain product revenue and direct margin targets in 
2016. The fair value of the contingent consideration at the Acquisition Date was $2.5 million, which was estimated based on 
a  probability-weighted  analysis  of  possible  future  cash  flow  outcomes.  The  fair  value  of  the  contingent  consideration  is 
recorded in other long-term liabilities in the Consolidated Balance Sheets and is remeasured at the end of each reporting 
period, with any changes in fair value recorded in operating expense in the Consolidated Statements of Operations. Actual 
amounts that will ultimately be paid may differ from the obligations recorded. 

The Company incurred $0.6 million of transaction costs that were expensed as incurred and included in selling, general and 
administrative expenses in the Consolidated Statements of Operations. 

Preliminary Purchase Consideration Allocation 

The estimated fair value of assets acquired and liabilities assumed is as follows (in thousands): 

Cash ......................................................................................................................................................    $ 
Other tangible assets acquired, net of liabilities assumed .....................................................................      
Intangible assets: 

Know-how .........................................................................................................................................      
Developed technologies .....................................................................................................................      
IPR&D ...............................................................................................................................................      
Total identifiable net assets acquired ....................................................................................................      
Goodwill ...............................................................................................................................................      
Total net assets acquired .......................................................................................................................    $ 

145  
42  

1,018  
4,421  
2,045  
7,671  
6,571  
14,242  

Intangible assets with finite lives include know-how and developed technologies with estimated useful lives of three to five 
years. The fair value of know-how was determined using the relief from royalty method, and the fair value of the developed 
technologies  was  determined  using  the  income  approach.  Intangible  assets  with  indefinite  lives  include  IPR&D,  which 
consists of incomplete R&D projects that had not reached technological feasibility as of the Acquisition Date. The fair value 
of the IPR&D assets was determined using the income approach. 

The goodwill arising from the acquisition was primarily attributed to synergies which will enable the Company to develop 
advanced solutions in power management by combining with Sensima’s magnetic sensor technologies. The goodwill is not 
expected to be deductible for tax purposes. 

The purchase price allocation is considered preliminary and dependent upon the finalization of the valuation of assets acquired 
and liabilities assumed, primarily related to deferred taxes. The Company is currently determining if the acquisition qualifies 
as a tax-free reorganization within the meaning of Swiss tax rules pursuant to the tax holiday granted to Sensima by the Swiss 
tax authorities. Final determination of the valuation could result in an adjustment to the preliminary purchase price allocation, 
with an offsetting adjustment to goodwill. 

50 

  
   
  
  
  
  
   
  
  
       
 
  
  
  
  
 
 
Equity Awards 

On the Acquisition Date, the Board of Directors granted $1.7 million of time-based RSUs (or 40,000 shares) to key Sensima 
employees who became employees of the Company. These awards vest over four years. In addition, the Board of Directors 
granted $2.0 million of PSUs (or 47,000 shares) to these employees, with the right to earn up to a maximum of $8.0 million 
based on the achievement of certain cumulative Sensima product revenue targets during the performance period from the 
Acquisition Date to July 22, 2019. One half of the awards subject to each revenue goal will vest immediately when the pre-
determined revenue goal is met and approved by the Compensation Committee, and the remaining 50% will vest over the 
following two years. The vesting is subject to the employees’ continued employment with the Company. These equity awards 
are considered arrangements for post-acquisition services and the related compensation expense is being recognized over the 
requisite service period. 

Pro Forma Information (Unaudited) 

Supplemental information of the Company’s results of operations on a pro forma basis, as if the Sensima acquisition had 
been consummated on January 1, 2013, is presented as follows (in thousands, except per-share amounts): 

Year Ended December 31,
2013
2014

Revenue ...........................................................................................................   $
Net income .......................................................................................................   $
Diluted net income per share............................................................................   $

282,584     $ 
33,777     $ 
0.85     $ 

238,181  
20,187  
0.52  

These pro forma results are not necessarily indicative of the Company’s consolidated results of operations in future periods 
or the results that would have been realized had the Company acquired Sensima during the periods presented. The pro forma 
results include adjustments primarily related to Sensima’s results of operations, amortization of intangible assets, stock-based 
compensation expense and the related tax effects. 

3.  CASH, CASH EQUIVALENTS AND INVESTMENTS 

The  following  is  a  summary  of  the  Company’s  cash,  cash  equivalents,  and  short-term  and  long-term  investments  (in 
thousands): 

As of December 31,

2014 

2013

Cash, cash equivalents and investments: 

Cash  .....................................................................................................................   $
Money market funds .............................................................................................    
Certificates of deposit ...........................................................................................    
U.S. treasuries and government agency bonds ......................................................    
Auction-rate securities backed by student-loan notes ...........................................    
Total .............................................................................................................................   $

66,188     $ 
60,078       
22,778       
89,674       
5,389       
244,107     $ 

62,625  
35,588  
- 
128,126  
9,860  
236,199  

Reported as: 

Cash and cash equivalents .....................................................................................   $
Short-term investments .........................................................................................    
Long-term investments .........................................................................................    
Total .............................................................................................................................   $

126,266     $ 
112,452       
5,389       
244,107     $ 

101,213  
125,126  
9,860  
236,199  

As of December 31,

2014 

2013

51 

  
  
  
  
  
 
 
  
 
    
 
  
  
  
  
  
 
 
  
 
    
 
      
        
 
  
  
 
 
  
 
    
 
 
  
    
  
 
  
 
 
The  contractual  maturities  of  the  Company’s  short-term  and  long-term  available-for-sale  investments  are  as  follows  (in 
thousands):  

Due in less than 1 year .................................................................................................   $
Due in 1 - 5 years .........................................................................................................    
Due in greater than 5 years ...........................................................................................    
Total .............................................................................................................................   $

As of December 31,

2014 

2013

91,335     $ 
21,117       
5,389       
117,841     $ 

95,509  
29,617  
9,860  
134,986  

The following tables summarize unrealized gains and losses related to the Company's investments in marketable securities 
designated as available-for sale (in thousands): 

As of December 31, 2014 

Adjusted Cost

Unrealized 
Gains

Unrealized 
Losses

Total Fair 
Value 

Fair Value of 
Investments in 
Unrealized  
Loss Position

Money market funds ...............   $ 
Certificates of deposit..............     
U.S. treasuries and 

government agency bonds.....     

Auction-rate securities backed 

by student-loan notes ............     
Total ........................................   $ 

60,078     $
22,778      

89,689      

5,570      
178,115    $

-    $
-     

14      

-     
14     $

-    $
-     

60,078     $ 
22,778       

- 
- 

(29)    

89,674       

35,062  

(181)    
(210)   $

5,389       
177,919     $ 

5,389  
40,451  

As of December 31, 2013 

Adjusted Cost

Unrealized 
Gains 

Unrealized 
Losses

Total Fair 
Value 

Fair Value of
Investments in 
Unrealized 
Loss Position

Money market funds ...............   $ 
U.S. treasuries and 

35,588     $

government agency bonds ...     

128,123     

Auction-rate securities backed 

by student-loan notes ...........     
Total ........................................   $ 

10,220      
173,931    $

-    $

26      

-     
26     $

-    $

35,588     $ 

- 

(23)    

128,126       

42,880  

(360)    
(383)   $

9,860       
173,574     $ 

9,860  
52,740  

For the years ended December 31, 2014 and 2013, the Company redeemed $4.7 million and $2.0 million, respectively, of 
auction-rate securities at par. The underlying maturities of the outstanding auction-rate securities are up to 33 years. As of 
December  31,  2014  and  2013,  the  impairment  was  determined  to  be  temporary  based  on  the  following  management 
assessment: 

(1)  The decline in the fair value of these securities is not largely attributable to adverse conditions specifically related

to these securities or to specific conditions in an industry or in a geographic area; 

(2)  Management possesses both the intent and ability to hold these securities for a period of time sufficient to allow for 

any anticipated recovery in fair value; 

(3)  Management believes that it is more likely than not that the Company will not have to sell these securities before

recovery of its cost basis; 

(4)  Except  for  the  credit  loss  of  $70,000  recognized  in  the  year  ended  December  31,  2009,  the  Company  does  not
believe  that  there  is  any  additional  credit  loss  associated  with  these  securities  because  the  Company  expects  to
recover the entire amortized cost basis; 

(5)  There have been no further downgrades on these securities since 2009;  
(6)  All scheduled interest payments have been made pursuant to the reset terms and conditions; and 
(7)  All redemptions of these securities to date, representing 87% of the original portfolio, have been at par. 

52 

  
 
 
  
 
    
 
  
  
  
  
 
  
  
   
   
   
    
 
  
      
        
        
        
        
 
  
  
  
 
  
  
   
   
   
    
 
  
      
        
        
        
        
 
  
  
   
  
  
  
  
  
  
       
4. FAIR VALUE MEASUREMENT 

The following table details the fair value measurement of the financial assets and liabilities (in thousands): 

Fair Value Measurement at December 31, 2014 

Quoted Prices 
in Active  
Markets for 
Identical Assets
Level 1

Significant Other 
Observable 
Inputs 
Level 2 

Significant  
Unobservable 
Inputs
Level 3

Total

Assets: 

Money market funds ..........................   $ 
Certificates of deposit ........................     
U.S. treasuries and government 

agency bonds ...................................     

Auction-rate securities backed by 

60,078     $
22,778      

89,674      

student-loan notes ............................     

5,389      

Mutual funds under deferred 

60,078     $
-     

-     

-     

-    $ 
22,778       

89,674       

-      

compensation plan ...........................     
Total ......................................................    $ 

2,236      
180,155     $

2,236      
62,314     $

-      
112,452     $ 

Liabilities: 

Contingent consideration ...................   $ 
Total ......................................................    $ 

2,507     $
2,507     $

-    $
-    $

-    $ 
-    $ 

- 
- 

- 

5,389  

- 
5,389  

2,507  
2,507  

Fair Value Measurement at December 31, 2013 

Quoted Prices 
in Active 
Markets for  
Identical Assets
Level 1

Significant Other 
Observable 
Inputs 
Level 2 

Significant  
Unobservable  
Inputs
Level 3

Total

35,588     $

35,588     $

-    $ 

128,126      

9,860      
173,574     $

-     

128,126       

-     
35,588     $

-      
128,126     $ 

- 

- 

9,860  
9,860  

Assets: 

Money market funds ..........................   $ 
U.S. treasuries and government 

agency bonds ...................................     

Auction-rate securities backed by 

student-loan notes ............................     
Total ......................................................    $ 

The Company’s level 3 assets consist of government-backed student loan auction-rate securities, with interest rates that reset 
through a Dutch auction every 7 to 35 days and which became illiquid in 2008. The following table provides a rollforward 
of the fair value of the auction-rate securities (in thousands): 

Balance at January 1, 2013 ........................................................................................................................   $ 
Sales and settlement at par ........................................................................................................................     
Change in unrealized loss included in other comprehensive income ........................................................     
Ending balance at December 31, 2013 ......................................................................................................     
Sales and settlement at par ........................................................................................................................     
Change in unrealized loss included in other comprehensive income ........................................................     
Ending balance at December 31, 2014 ......................................................................................................   $ 

11,755  
(2,025)
130  
9,860  
(4,650)
179  
5,389  

53 

  
  
  
  
 
  
    
  
   
   
    
 
  
  
   
   
    
 
      
        
        
        
 
  
      
        
        
        
 
      
        
        
        
 
  
  
  
  
 
  
    
  
   
   
    
 
  
  
   
   
    
 
      
        
        
        
 
  
  
   
 
 
The Company determined the fair value of the auction-rate securities using a discounted cash flow model with the following 
assumptions: 

As of December 31,

Time-to-liquidity (months) ...............................................................................................    
Expected return ................................................................................................................    
Discount rate ....................................................................................................................     4.0% - 7.0%         3.3% - 8.1%  

2014 
24 
2.9% 

2013
24 
2.5% 

The  Company’s  level  3  liabilities  consist  of  the  contingent  consideration  related  to  the  acquisition  of  Sensima  in  July 
2014. The arrangement requires the Company to pay up to $8.9 million to certain former Sensima shareholders if Sensima 
achieves a new product introduction as well as certain product revenue and direct margin targets in 2016. The fair value of 
the contingent consideration at the Acquisition Date was $2.5 million, which was estimated based on a probability-weighted 
analysis  of  possible  future  cash  flow  outcomes.  There  were  no  significant  changes  in  the  fair  value  of  the  contingent 
consideration from the Acquisition Date to December 31, 2014. The fair value is calculated using the following assumptions: 

Project revenue in 2016 (in millions) ..........................................................................................................     
Discount rate  ..............................................................................................................................................     
Probability of occurrence ............................................................................................................................      20% - 50% 

As of  
December 31,
2014
$2.1 - $3.8 
9.0% 

5. BALANCE SHEET COMPONENTS 

Inventories  

Inventories consist of the following (in thousands): 

Raw materials  ..............................................................................................................   $
Work in process ...........................................................................................................    
Finished goods .............................................................................................................    
Total .............................................................................................................................   $

Property and Equipment, Net  

Property and equipment, net, consist of the following (in thousands): 

Production equipment and software .............................................................................   $
Buildings and improvements ........................................................................................    
Land .............................................................................................................................    
Transportation equipment ............................................................................................    
Furniture and fixtures ...................................................................................................    
Leasehold improvements .............................................................................................    
Property and equipment, gross .....................................................................................    
Less: accumulated depreciation and amortization ........................................................    
Total .............................................................................................................................   $

As of December 31,

2014 

2013

7,298     $ 
18,950       
14,670       
40,918     $ 

12,453  
14,152  
13,132  
39,737  

As of December 31,

2014 

2013

88,929     $ 
29,386       
5,600       
4,694       
2,883       
2,350       
133,842       
(70,900)     
62,942     $ 

83,075  
29,342  
5,600  
976  
2,681  
2,150  
123,824  
(58,987)
64,837  

Depreciation and amortization expense for the years ended December 31, 2014, 2013 and 2012 was $12.4 million, $12.1 
million and $9.3 million, respectively. 

54 

  
  
 
 
  
 
    
 
      
 
      
 
  
  
  
  
 
  
  
 
 
 
 
  
  
  
  
  
  
 
 
  
 
    
 
   
  
  
  
 
 
  
 
    
 
  
  
 
 
Other Long-Term Assets 

Other long-term assets consist of the following (in thousands): 

Deferred compensation plan assets ..............................................................................   $
Prepaid expense ............................................................................................................    
Other ............................................................................................................................    
Total .............................................................................................................................   $

Accrued Liabilities 

Accrued liabilities consist of the following (in thousands): 

As of December 31,

2014 

2013

6,084     $ 
1,418       
955       
8,457     $ 

607  
57  
980  
1,644  

As of December 31,

2014 

2013

Deferred proceeds from litigation  ...............................................................................   $
Dividends and dividend equivalents.............................................................................    
Deferred revenue and customer prepayments ..............................................................    
Stock rotation reserve ...................................................................................................    
Commissions ................................................................................................................    
Sales rebate ..................................................................................................................    
Warranty.......................................................................................................................    
Other ............................................................................................................................    
Total .............................................................................................................................   $

-    $ 
6,080       
3,908       
1,757       
767       
586       
240       
1,365       
14,703     $ 

Other Long-Term Liabilities 

Other long-term liabilities consist of the following (in thousands): 

Deferred compensation plan liabilities .............................................................   $
Contingent consideration .................................................................................    
Dividend equivalents ........................................................................................    
Other ................................................................................................................    
Total .................................................................................................................   $

6,177     $ 
2,507       
580       
940       
10,204     $ 

As of December 31,

2014

2013

9,489  
- 
2,523  
1,459  
931  
900  
451  
1,623  
17,376  

628 
- 
- 
850 
1,478 

6. GOODWILL AND ACQUISITION-RELATED INTANGIBLE ASSETS, NET 

There have been no changes in the balance of goodwill from the Acquisition Date to December 31, 2014. The Company did 
not identify any goodwill impairment in 2014. 

Acquisition-related intangible assets consist of the following (in thousands): 

As of December 31, 2014 
Accumulated  
Amortization 

Gross Amount

Net Amount

Subject to amortization: 

Know-how ............................................................................   $
Developed technologies ........................................................    

Not subject to amortization: 

IPR&D ..................................................................................    
Total .............................................................................................   $

1,018     $
4,421      

2,045      
7,484     $

(93)   $ 
(579)     

-      
(672)   $ 

925  
3,842  

2,045  
6,812  

55 

  
   
  
 
 
  
 
    
 
  
  
  
  
 
 
  
 
    
 
  
  
  
  
 
 
  
 
    
 
  
  
  
  
  
  
 
 
  
 
   
    
 
      
        
        
 
      
        
        
 
  
Amortization expense was recorded in cost of revenue in the Consolidated Statements of Operations and totaled $0.7 million 
for the year ended December 31, 2014. 

The estimated future amortization expense as of December 31, 2014 is as follows (in thousands): 

2015 ......................................................................................................................................................    $ 
2016 ......................................................................................................................................................      
2017 ......................................................................................................................................................      
2018 and thereafter................................................................................................................................      
Total ......................................................................................................................................................    $ 

1,467  
1,467  
1,467  
366  
4,767  

7.  STOCK-BASED COMPENSATION 

2004 Equity Incentive Plan (the “2004 Plan”) 

The Board of Directors adopted the 2004 Plan in March 2004, and the stockholders approved it in November 2004. The 2004 
Plan provided for annual increases in the number of shares available for issuance equal to the least of 5% of the outstanding 
shares of common stock on the first day of the year, 2.4 million shares, or a number of shares determined by the Board of 
Directors. The 2004 Plan expired on November 12, 2014 and equity awards can no longer be granted under the 2004 Plan. 
As of November 12, 2014, 2.9 million shares that were available for issuance expired under the 2004 Plan. 

2014 Equity Incentive Plan (the “2014 Plan”) 

The Board of Directors adopted the 2014 Plan in April 2013, and the stockholders approved it in June 2013. The 2014 Plan 
became effective on November 13, 2014. The 2014 Plan provides for the issuance of up to 5.5 million shares and will expire 
on November 13, 2024. As of December 31, 2014, 5.5 million shares remained available for future issuance.  

Stock-Based Compensation Expense 

The Company recognized stock-based compensation expense as follows (in thousands): 

Cost of revenue ............................................................................   $
Research and development ...........................................................    
Selling, general and administrative ..............................................    
Tax benefit ...................................................................................    
Total .............................................................................................   $

903     $
9,019      
23,532      
-     
33,454     $

631    $ 
6,219      
13,851      
-      
20,701    $ 

510  
6,922  
11,220  
(187)
18,465  

Year Ended December 31,
2013 

2012

2014

Equity Award Modifications 

In connection with a special cash dividend declared and paid in December 2012, the Board of Directors approved an equity 
award modification whereby the number of shares of each option outstanding as of December 28, 2012 was increased by a 
ratio  of  1.0471  and  the  exercise  price  was reduced by  the  same  ratio.  Consequently,  the  Company  granted  an  additional 
171,000  shares.  This  modification  was  permissible  pursuant  to  the  Company’s  2004  Plan  and  resulted  in  an  incremental 
compensation cost of $2.9 million, of which $2.8 million was recognized during the fourth quarter of 2012. The remaining 
$0.1 million is being recognized over the remaining vesting period of the awards. The Company used the Black-Scholes 
model to determine the fair value of the additional option awards with the following weighted-average assumptions: expected 
term of 1.9 years, expected volatility of 41.0%, risk-free interest rate of 0.3% and dividend yield of 0.0%. 

In addition, in connection with the special cash dividend, the Board of Directors approved  an equity award modification 
whereby for each unvested restricted stock unit (“RSU”) as of December 28, 2012, the holder would receive 1.0471 shares 
upon  vesting  of  the  original  awards  granted.  Consequently,  the  Company  granted  an  additional  74,000  shares.  This 
modification was permissible pursuant to the Company’s 2004 Plan and resulted in an incremental compensation cost of $1.5 
million, which is being recognized over the remaining vesting period of the awards. The fair value of the additional RSUs 
was based on the grant date share price. 

56 

   
  
  
  
  
  
  
  
  
  
  
  
 
 
  
 
   
    
 
  
  
  
  
RSUs 

The Company’s RSUs include time-based RSUs, performance-based RSUs (“PSUs”) and market-based RSUs (“MSUs”). A 
summary of the RSUs is presented in the table below: 

Weighted- 
Average 
Grant  
Date Fair  
Value Per  
Share 

Time-Based  
RSUs 
   (in thousands)        

PSUs
     (in thousands)      

Weighted- 
Average 
Grant  
Date Fair 
Value Per 
Share

Weighted- 
Average 
Grant 
Date Fair 
Value Per  
Share 

MSUs

(in thousands)     

Total 
     (in thousands)      

Weighted- 
Average 
Grant 
Date Fair 
Value Per 
Share

Outstanding at 

January 1, 2012 ..     
Modification (1) ...     
Granted (2)(3) .......     
Performance 

adjustment (4) ....     
Released ................     
Forfeited ...............     
Outstanding at 
December 31, 
2012 ...................     
Granted (3) ............     
Performance 

adjustment (4) ....     
Released ................     
Forfeited ...............     
Outstanding at 
December 31, 
2013 ...................     
Granted (3)(5) .......     
Performance 

adjustment (4) ....     
Released ................     
Forfeited ...............     
Outstanding at 
December 31, 
2014 ...................     

1,082     $ 
(76)   $ 
617     $ 

-    $ 
(447)   $ 
(77)   $ 

1,099     $ 
299     $ 

-    $ 
(519)   $ 
(125)   $ 

754     $ 
335     $ 

-    $ 
(468)   $ 
(32)   $ 

16.00       
15.69       
18.69       

-      
17.30       
16.61       

16.96       
24.25       

-      
17.57       
17.06       

19.41       
36.71       

-      
20.36       
19.75       

217    $
76    $
963    $

(624) $
(97) $
(4) $

531    $
875    $

(124) $
(206) $
(48) $

1,028    $
1,091    $

(139) $
(304) $
(17) $

20.73     
15.69     
18.24     

18.19     
20.73     
19.07     

18.49     
24.43     

21.98     
18.90     
19.06     

23.02     
34.23     

31.40     
18.12     
19.79     

-  $
-  $
-  $

-  $
-  $
-  $

-       
-       
-       

-       
-       
-       

-  $
1,800  $

-       
23.57       

-  $
-  $
-  $

-       
-       
-       

1,800  $
-  $

23.57       
-       

-  $
-  $
-  $

-       
-       
-       

1,299    $
-   $
1,580    $

(624) $
(544) $
(81) $

1,630    $
2,974    $

(124) $
(725) $
(173) $

3,582    $
1,426    $

(139) $
(772) $
(49) $

16.87  
- 
18.42  

18.19  
17.91  
16.74  

17.46  
23.89  

21.98  
17.95  
17.61  

22.53  
34.82  

31.40  
19.48  
19.77  

589     $ 

28.48       

1,659    $

28.11     

1,800  $

23.57       

4,048    $

26.14  

 _________________ 
(1)  See “2011 and 2012 CEO Awards” below for further discussion. 
(2)  Amount includes 74,000 shares granted as a result of the equity award modification. See “Equity Award Modifications”

above for further discussion. 

(3)  Amount reflects the maximum number of PSUs that can be earned assuming the achievement of the highest level of

performance conditions. 

(4)  Amount reflects the number of PSUs that have not been earned or may not be earned based on management’s probability 

assessment. 

(5)  Amount does not include 674,000 shares of time-based RSUs and PSUs authorized by the Board of Directors in October
2014, as the grant date of these awards has not been established at the time of approval. See “2014 Time-Based RSUs 
and PSUs” below for further discussion. 

The intrinsic value related to awards released for the years ended December 31, 2014, 2013 and 2012 was $28.9 million, 
$18.6 million and $10.5 million, respectively. As of December 31, 2014, the total intrinsic value of outstanding awards was 
$201.3 million, based on the closing stock price of $49.74. As of December 31, 2014, unamortized compensation expense 
related to outstanding awards was approximately $73.6 million with a weighted-average remaining recognition period of 
approximately six years.  

2014 Time-Based RSUs and PSUs: 

In February 2014, the Board of Directors granted 336,000 shares to executive officers. These grants included 84,000 shares 
of time-based RSUs which vest over two years on a quarterly basis, and 252,000 shares of PSUs which represent a target 
number  of  RSUs  to  be  awarded  based  on  the  Company’s  achievement  of  an  average  two-year  (2014  and  2015)  revenue 
growth  rate  compared  against  the  analog  industry’s  average  two-year  revenue  growth  rate  as  determined  by  the 
Semiconductor  Industry  Association  (“2014  Executive  PSUs”).  The  maximum  number  of  2014  Executive  PSUs  that  an 
executive officer can ultimately earn is 300% of the target shares. Half of the 2014 Executive PSUs will vest in February 
57 

  
  
  
  
    
    
   
  
  
    
   
 
  
  
  
  
  
  
 
  
  
  
2016 if the pre-determined performance goals are met and approved by the Compensation Committee. The remaining shares 
will vest over the following two years on a quarterly basis. The vesting is subject to the employees’ continued employment 
with the Company. 

In April 2014, the Board of Directors granted 139,000 shares to non-executive employees. These grants included 78,000 
shares of time-based RSUs which vest over four years on an annual or quarterly basis, and 61,000 shares of PSUs which 
represent a target number of RSUs to be awarded based on the Company’s achievement of 2015 revenue goals for certain 
regions or product line divisions, or the Company’s achievement of an average two-year (2014 and 2015) revenue growth 
rate  compared  against  the  analog  industry’s  average  two-year  revenue  growth  rate  as  determined  by  the  Semiconductor 
Industry Association (“2014 Non-Executive PSUs”). The maximum number of 2014 Non-Executive PSUs that an employee 
can ultimately earn is either 200% or 300% of the target shares, depending on the job classifications of the employees. Half 
of the 2014 Non-Executive PSUs will vest in the second quarter of 2016 if the pre-determined performance goals are met 
and approved by the Compensation Committee. The remaining shares will vest over the following two years on an annual or 
quarterly basis. The vesting is subject to the employees’ continued employment with the Company. 

In connection with the acquisition of Sensima in July 2014, the Board of Directors granted time-based RSUs and PSUs to 
key Sensima employees who became employees of the Company. See Note 2 for further discussion. 

In October 2014, the Board of Directors approved 212,000 shares of PSUs to executive officers with a two-year performance 
period  that  will  begin  in  2015.    In  addition,  the  Board  of  Directors  approved  358,000  shares  of  PSUs  to  non-executive 
employees with five consecutive two-year performance periods that will begin in 2015 and end in 2020.  The performance 
metrics for all of the PSUs will be defined by the Board of Directors at the inception of each performance period. The shares 
were reserved from the 2004 Plan prior to its expiration in November 2014. The shares will be subject to adjustments at the 
discretion of the Board of Directors at the inception of each performance period. The Company will determine the grant date 
fair value of these awards and begin recognizing the related expense when the performance metrics are approved by the 
Board of Directors and the awards are communicated to the employees at the inception of each performance period. 

In October 2014, the Board of Directors approved 104,000 shares of time-based RSUs to non-executive employees with 
vesting period that will begin in 2015. The shares were reserved from the 2004 Plan prior to its expiration in November 
2014.  The Company will determine the grant date fair value of these awards and begin recognizing the related expense when 
the awards are communicated to the employees in 2015. 

2013 MSUs: 

In December 2013, the Board of Directors granted 360,000 shares to the executive officers and certain key employees. The 
MSUs  represent  the  right  to  receive  a  maximum  of  1.8  million  shares  that  can  be  earned  upon  achievement  of  five  pre-
determined MPS stock price hurdles from January 1, 2014 to December 31, 2018 (“2013 MSUs”). The 2013 MSUs that meet 
the pre-determined stock price hurdles from January 1, 2014 to December 31, 2018 will vest quarterly from January 1, 2019 
to December 31, 2023, subject to the employees’ continued employment with the Company. In 2014, the Company achieved 
three price hurdles, and the Compensation Committee approved an additional 720,000 shares to the employees. 

The  Company  determined  the  grant  date  fair  value  of  the  2013  MSUs  using  a  Monte  Carlo  simulation  model  with  the 
following assumptions: grant date stock price of $31.73, expected volatility of 38.69%, risk-free interest rate of 1.6% and 
dividend yield of 0.0%. Stock-based compensation expense for the 2013 MSUs is not reversed if the pre-determined stock 
price hurdles are not satisfied. 

2013 Time-Based RSUs and PSUs: 

In February 2013, the Board of Directors granted 294,000 shares to the executive officers. These grants included 74,000 
shares of time-based RSUs which vested over two years on a quarterly basis, and 220,000 shares of PSUs which represented 
a target number of RSUs that would be awarded upon achievement of certain pre-determined revenue targets in 2014 (“2013 
Executive PSUs”). The maximum number of 2013 Executive PSUs that an executive officer could receive was 300% of the 
target shares. In February 2015, the Compensation Committee approved the revenue achievement for the 2013 Executive 
PSUs and an additional 402,000 shares were awarded to the executive officers. Half of the 2013 Executive PSUs vested in 
February 2015 and the remaining shares vest over the following two years on a quarterly basis. The vesting is subject to the 
employees’ continued employment with the Company.  

58 

  
  
  
  
  
  
  
  
  
  
 
 
In February 2013, the Board of Directors granted 215,000 shares to non-executive employees. These grants included 124,000 
shares of time-based RSUs which vest over four years on a quarterly or annual basis, and 91,000 shares of PSUs which 
represented a target number of RSUs that would be awarded upon achievement of certain pre-determined revenue targets for 
the Company as a whole, certain regions or product-line divisions in 2014 (“2013 Non-Executive PSUs”). The maximum 
number of 2013 Non-Executive PSUs an employee could receive was either 200% or 300% of the target shares, depending 
on  the  job  classifications  of  the  employees.  In  February  2015,  the  Compensation  Committee  approved  the  revenue 
achievement for the 2013 Non-Executive PSUs and an additional 63,000 shares were awarded to the employees. Half of the 
2013 Non-Executive PSUs vested in February 2015 and the remaining shares vest over the following two years on a quarterly 
or annual basis. The vesting is subject to the employees’ continued employment with the Company.  

2012 Time-Based RSUs and PSUs: 

In February 2012, the Board of Directors granted 413,000 shares to the executive officers. These grants included 206,500 
shares of time-based RSUs which vested over two years on a quarterly basis, and 206,500 shares of PSUs which represented 
a target number of RSUs that would be awarded upon achievement of certain pre-determined revenue targets in 2013 (“2012 
Executive PSUs”). The maximum number of 2012 Executive PSUs that an executive officer could receive was 300% of the 
target shares. In February 2014, the Compensation Committee approved the revenue achievement for the 2012 Executive 
PSUs and an additional 139,000 shares were awarded to the executive officers. Half of the 2012 Executive PSUs vested in 
February 2014 and the remaining shares vest over the following two years on a quarterly basis. The vesting is subject to the 
employees’ continued employment with the Company.  

In April 2012, the Board granted 345,000 shares to non-executive employees. These grants included 220,000 shares of time-
based RSUs which vest over four years on a quarterly or annual basis, and 125,000 shares of PSUs which represented a target 
number of shares that would be awarded upon achievement of certain pre-determined revenue targets for the Company as a 
whole, certain regions or product-line divisions in 2013 (“2012 Non-Executive PSUs”). The maximum number of shares an 
employee could receive was either 200% or 300% of the target shares, depending on the job classifications of the employees. 
In April 2014, the Compensation Committee approved the revenue achievement for the 2012 Non-Executive PSUs and an 
additional 30,000 shares were awarded to the employees. Half of the 2012 Non-Executive PSUs vested in the second quarter 
of 2014 and the remaining shares vest over the following two years on a quarterly or annual basis. The vesting is subject to 
the employees’ continued employment with the Company.  

2011 and 2012 CEO Awards: 

In February 2011, the Board of Directors granted 153,000 shares of time-based RSUs to the CEO. In February 2012, the 
Board of Directors approved the modification of half of the time-based RSUs to PSUs (“2012 CEO PSUs”). The time-based 
RSUs that were not modified vested over two years on a quarterly basis from February 2011 to February 2013. The 2012 
CEO PSUs would vest upon achievement of the pre-determined performance goals based on the Company’s 2012 revenue 
and the CEO’s continued employment. The maximum number of 2012 CEO PSUs that could be released was 100% of the 
target shares. In February 2013, the Compensation Committee determined that the pre-determined performance goals were 
met and the 2012 CEO PSUs were released in February 2013.   

59 

  
  
  
   
  
  
 
 
Stock Options   

A summary of the stock options activities is presented in the table below: 

Weighted-
Average  
Exercise 
Price

Weighted- 
Average  
Remaining  
Contractual 
Term  
(in years) 

    Aggregate
Intrinsic 
Value 
    (in thousands)  
8,817  

3.4     $

Outstanding at January 1, 2012 ....................................................    
Options granted (1) ...................................................................    
Options exercised .....................................................................    
Options forfeited and expired ...................................................    
Outstanding at December 31, 2012 ..............................................    
Options exercised .....................................................................    
Options forfeited and expired ...................................................    
Outstanding at December 31, 2013 ..............................................    
Options exercised .....................................................................    
Options forfeited and expired ...................................................    
Outstanding at December 31, 2014 ..............................................    
Options exercisable at December 31, 2014 and expected to vest .    
Options exercisable at December 31, 2014  .................................    
_______________________   
(1)   Includes 171,000 options granted as a result of the equity award modification. See “Equity Award Modifications” above

15.31       
15.63       
11.62       
20.90       
15.62       
15.49       
15.27       
15.86       
16.09       
10.07       
15.80       
15.80       
15.92       

20,039  
20,026  
19,221  

1.2     $
1.2     $
1.2     $

Shares
  (in thousands)      
4,863     $
178     $
(1,152)   $
(76)   $
3,813     $
(2,446)   $
(11)   $
1,356     $
(742)   $
(24)   $
590     $
590     $
568     $

25,506  

25,380  

2.6     $

1.9     $

for further discussion. 

The following table summarizes certain information related to outstanding and exercisable options as of December 31, 2014: 

Range of 
Exercises Prices 

Shares 

(in thousands)       

$  0.76 - $14.96          
$  15.03 - $15.03         
$  15.13 - $23.50         

118         
321         
151         
590         

2.0    $
0.8    $
1.6    $
1.2    $

Options Outstanding
Weighted- 
Average  
Remaining  
Contractual 
Term
(in years) 

    Weighted- 
Average 
Exercise Price

Options Exercisable

      Weighted- 
Average 
Exercise Price

Shares 

12.16      
15.03      
20.29      
15.80      

(in thousands)          
98       $ 
321       $ 
149       $ 
568       $ 

12.07  
15.03  
20.36  
15.92  

Total intrinsic value of options exercised was $17.3 million, $27.8 million and $10.0 million for the years ended December 
31, 2014, 2013 and 2012, respectively. The net cash proceeds from the exercise of stock options were $11.9 million, $37.9 
million and $13.4 million for the years ended December 31, 2014, 2013 and 2012, respectively. At December 31, 2014, 
unamortized  compensation  expense  related  to  unvested options was  approximately  $0.1  million with  a weighted-average 
remaining recognition period of less than one year. 

The grant date fair value of stock options was determined using the Black-Scholes model with the following assumptions 
(excluding the options modification discussed above):  

Expected term (years) ...........................................................................................................................     
Expected volatility ................................................................................................................................     
Risk-free interest rate ............................................................................................................................     
Dividend yield .......................................................................................................................................     

   Year Ended 
  December 31, 2012 
4.1  
53.4%
0.6%
-  

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Employee Stock Purchase Plan 

Under  the  2004  Employee  Stock  Purchase  Plan  (the  “ESPP”),  eligible  employees  may  purchase  common  stock  through 
payroll deductions. Participants may not purchase more than 2,000 shares in a six-month offering period or stock having a 
value greater than $25,000 in any calendar year as measured at the beginning of the offering period in accordance with the 
Internal Revenue Code and applicable Treasury Regulations.  The ESPP provides for an annual increase by an amount equal 
to the least of 1.0 million shares, 2% of the outstanding shares of common stock on the first day of the year, or a number of 
shares as determined by the Board of Directors. For the years ended December 31, 2014, 2013 and 2012, 78,000, 111,000 
and 152,000 shares, respectively, were issued under the ESPP. As of December 31, 2014, approximately 4.7 million shares 
were available for future issuance. 

The intrinsic value for stock purchased was $0.9 million, $0.8 million and $1.0 million for the years ended December 31, 
2014,  2013  and  2012,  respectively.  The  unamortized  expense  as  of  December  31,  2014  was  $0.1  million,  which  will  be 
recognized by the first quarter of 2015. The Black-Scholes model was used to value the employee stock purchase rights with 
the following weighted-average assumptions: 

2014

Year Ended December 31, 
2013 

2012

Expected term (years) ............................................................    
Expected volatility .................................................................    
Risk-free interest rate .............................................................    
Dividend yield ........................................................................    

0.5      
29.4%   
0.1%   
0.7%   

0.5       
28.0%     
0.1%     
-       

0.5  
45.8%
0.1%
-  

Cash proceeds from the ESPP were $2.1 million, $2.1 million and $1.9 million for the years ended December 31, 2014, 2013 
and 2012, respectively. 

8. STOCK REPURCHASE PROGRAM 

In July 2013, the Board of Directors approved a stock repurchase program that authorizes the Company to repurchase up to 
$100  million  in  the  aggregate  of  its  common  stock  through  June  30,  2015.  All  shares  are  retired  upon  repurchase.  The 
following table summarizes the repurchase activities under the program (in thousands, except per share amounts): 

Cumulative balance at January 1, 2014 ..............................................    
Repurchases  ......................................................................................    
Cumulative balance at December 31, 2014 ........................................    

664     $
1,051     $
1,715     $

Shares 
Repurchased

Average Price 
Per Share 

Total Amount
20,615  
41,198  
61,813  

31.06     $ 
39.19       
36.04     $ 

As of December 31, 2014, $38.2 million remained available for future repurchases under the program. 

9. DIVIDENDS AND DIVIDEND EQUIVALENTS 

2014 Cash Dividend Program 

In June 2014, the Board of Directors approved a dividend program pursuant to which the Company intends to pay quarterly 
cash dividends on its common stock. Stockholders of record as of the last day of the quarter are entitled to receive the quarterly 
cash dividends declared by the Board of Directors, which are payable on the 15th of the following month. The Board of 
Directors declared the following cash dividends in 2014 (in thousands, except per-share amounts): 

Second quarter  ................................................................................................   $
Third quarter  ...................................................................................................   $
Fourth quarter  ..................................................................................................   $

0.15     $ 
0.15     $ 
0.15     $ 

5,817  
5,823  
5,826  

  Dividend Declared     
per Share 

Total
Amount

As of December 31, 2014, accrued dividends totaled $5.8 million. 

61 

  
  
  
  
 
 
  
 
 
 
     
 
  
  
  
  
  
 
   
    
 
  
  
  
  
  
  
 
  
 
    
 
  
  
The declaration of any future cash dividends is at the discretion of the Board of Directors and will depend on the Company's 
financial  condition,  results  of  operations,  capital  requirements,  business  conditions  and  other  factors,  as  well  as  a 
determination that cash dividends are in the best interests of the Company's stockholders. The Company anticipates that the 
cash used for future dividends will come from its current domestic cash and cash generated from ongoing U.S. operations. If 
cash held by the Company’s international subsidiaries is needed for the payment of dividends, the Company may be required 
to accrue and pay U.S. taxes to repatriate the funds.  

Cash Dividend Equivalents 

Beginning in June 2014, outstanding RSU awards contain rights to receive cash dividend equivalents under the Company’s 
stock plans, which entitle employees who hold RSUs to the same dividend value per share as holders of common stock. The 
dividend equivalents are accrued quarterly during the vesting periods of the RSUs and payable to the employees when the 
awards vest. Dividend equivalents accrued on the outstanding RSUs are forfeited if the employees do not fulfill their service 
requirement during the vesting periods. As of December 31, 2014, accrued dividend equivalents totaled $0.8 million. 

2012 Special Cash Dividend  

In December 2012, the Board of Directors declared a special cash dividend of $1.00 per common share, which was paid on 
December  28, 2012  to  all  stockholders of record  as of  the  close  of  business on December  21, 2012,  for  a  total  of  $35.7 
million.   

10.   NET INCOME PER SHARE 

Basic  net  income  per  share  is  computed  by  dividing  net  income  by  the  weighted-average  number  of  common  shares 
outstanding  for  the  period.  Diluted  net  income  per  share  reflects  the  potential  dilution  that  would  occur  if  outstanding 
securities or other contracts to issue common stock were exercised or converted into common stock, and calculated using the 
treasury stock method. 

Beginning  in  June  2014,  the  Company’s  outstanding  RSU  awards  contain  forfeitable  rights  to  receive  cash  dividend 
equivalents, which are accrued quarterly during the vesting periods of the RSUs and payable to the employees when the 
awards vest. Dividend equivalents accrued on outstanding RSUs are forfeited if the employees do not fulfill their service 
requirement during the vesting periods. Accordingly, these awards are not treated as participating securities in the net income 
per share calculation. 

The following table sets forth the computation of basic and diluted net income per share (in thousands, except per share 
amounts): 

Numerator: 

Net income ..................................................................................   $

35,495     $

22,898     $

15,756  

Year Ended December 31,
2013 

2014

2012

Denominator: 

Weighted-average outstanding shares used to compute basic 

net income per share .................................................................    
Effect of dilutive securities .........................................................    
Weighted-average outstanding shares used to compute diluted 

38,686      
1,107      

37,387       
1,233       

34,871  
1,376  

net income per share .................................................................    

39,793      

38,620       

36,247  

Net income per share: 

Basic  ...........................................................................................   $
Diluted ........................................................................................   $

0.92     $
0.89     $

0.61     $
0.59     $

0.45  
0.43  

For the year ended December 31, 2014, there were no anti-dilutive common stock equivalents. For the years ended December 
31, 2013 and 2012, approximately 2,000 and 1.1 million weighted-average common stock equivalents, respectively, were 
excluded from the calculation of diluted net income per share because their inclusion would have been anti-dilutive. 

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11.  INCOME TAXES  

The components of income (loss) before income taxes are as follows (in thousands): 

United States ....................................................................   $
International .....................................................................    
Total income before income taxes ...................................   $

3,173     $
33,219      
36,392     $

(2,309)   $ 
26,316      
24,007    $ 

807  
17,083  
17,890  

2014

Year Ended December 31, 
2013 

2012

Management’s  intent  is  to  indefinitely  reinvest  any  undistributed  earnings  from  its  foreign  subsidiaries.  Accordingly,  no 
provision for Federal and state income or foreign withholding taxes has been provided thereon, nor is it practical to determine 
the amount of this liability. Upon distribution of those earnings in the form of dividends or otherwise, the Company will be 
subject to U.S. income taxes and potential foreign withholding taxes. As of December 31, 2014 and 2013, the unremitted 
earnings  of  foreign  subsidiaries  were  $172.7  million  and  $141.0  million,  respectively.  The  Company  has  sufficient  cash 
reserves  in  the  U.S.  and  intends  to  use  the  undistributed  foreign  earnings  to  fund  foreign  operations  and  research  and 
development needs, planned capital outlay and expansion. 

The components of the income tax provision are as follows (in thousands): 

2014

Year Ended December 31, 
2013 

2012

Current: 

Federal ................................................................................   $
State ....................................................................................    
Foreign ................................................................................    

Deferred: 

Foreign ................................................................................    
Total income tax provision .....................................................   $

18     $
(28)    
943      

(36)    
897     $

77     $ 
67       
1,053       

(88 )     
1,109     $ 

The effective tax rate differs from the applicable U.S. statutory federal income tax rate as follows: 

Year Ended December 31, 
2013 

2012

2014

U.S. statutory federal tax rate .......................................................   
State, net of federal benefit ..........................................................   
Research and development credits ...............................................   
Stock-based compensation ...........................................................   
Foreign income at lower rates ......................................................   
Changes in valuation allowance ...................................................   
Litigation reserves and other ........................................................   
Effective tax rate ..........................................................................   

34.0 %    
-      
(0.3)     
(9.3)     
(27.7)     
6.2       
(0.4)     
2.5 %    

34.0 %     
0.3        
-       
(13.7)      
(33.8)      
16.8        
1.0        
4.6 %     

The components of net deferred tax assets consist of the following (in thousands): 

840  
3  
1,302  

(11)
2,134  

34.0 %
-  
(3.6) 
0.1   
(28.4) 
7.0   
2.8   
11.9 %

Deferred tax assets: 

Research tax credits ..........................................................................................   $
Other expenses not currently deductible ...........................................................    
Stock-based compensation ................................................................................    
Litigation settlement .........................................................................................    
Net operating losses ..........................................................................................    
Depreciation and amortization ..........................................................................    
Total deferred tax assets ...........................................................................................    
Valuation allowance .................................................................................................    
Net deferred tax assets .............................................................................................   $

63 

As of December 31,

2014 

2013

10,393     $ 
4,861       
4,068       
-       
298       
181       
19,801       
(19,051 )     
750     $ 

8,303  
3,204  
2,599  
2,490  
627  
291  
17,514  
(16,739)
775  

  
  
  
 
 
  
 
   
    
 
  
   
  
  
 
 
  
 
   
    
 
      
        
        
 
      
        
        
 
   
  
  
 
 
  
 
 
 
     
 
  
  
  
 
 
  
 
    
 
      
        
 
As  a  result  of  the  cost  sharing  arrangements  with  the  Company’s  international  subsidiaries  (cost  share  arrangements), 
relatively small changes in costs that are not subject to sharing under the cost share arrangements can significantly impact 
the overall profitability of the U.S. entity. Because of the U.S. entity’s inconsistent earnings history and uncertainty of future 
earnings, the Company has determined that it is more likely than not that the U.S. deferred tax benefits would not be realized. 
The Company will continue to evaluate if its facts and circumstances warrant a reversal of the valuation allowance against 
the U.S. deferred tax benefits in future periods.  

As of December 31, 2014 and 2013, the Company had a valuation allowance of $19.1 million and $16.7 million, respectively, 
attributable to management’s determination that it is more likely than not that most of the deferred tax assets in the U.S. will 
not be realized. Should it be determined that additional amounts of the net deferred tax asset will not be realized in the future, 
an  adjustment  to  increase  the  deferred  tax  asset  valuation  allowance  will  be  charged  to  income  in  the  period  such 
determination is made. Likewise, in the event the Company were to determine that it is more likely than not that it would be 
able  to  realize  its  deferred  tax  assets  in  the  future  in  excess  of  its  net  recorded  amount,  an  adjustment  to  the  valuation 
allowance for the deferred tax asset would increase income in the period such determination was made. 

As of December 31, 2014, the federal and state net operating loss carryforwards for income tax purposes were approximately 
$24.5 million and $33.2 million, respectively. The federal net operating loss carryforwards will begin to expire in 2027 and 
the state net operating loss carry forwards will expire beginning in 2018. $24.5 million of the federal net operating loss carry 
forwards and $28.0 million of the state operating loss carry forwards are related to excess tax benefits as a result of stock 
option exercises and therefore will be recorded in additional paid-in-capital in the period that they become realized. The 
Company  has  elected  to  follow  the  “with  and  without”  approach  to  account  for  excess  tax  benefits  from  stock  options 
exercises. In addition, the Company only considers the direct effects of stock option exercises when calculating the amount 
of windfalls or shortfalls. 

As  of  December  31,  2014,  the  Company  had  research  tax  credit  carryforwards  of  $16.7  million  for  federal  income  tax 
purposes, which will begin to expire in 2020, and $14.7 million for state income tax purposes, which can be carried forward 
indefinitely. $4.0 million of the federal research tax credit and $1.4 million of the state research tax credit carryovers are 
related to excess tax benefits as a result of stock option exercises and therefore will be recorded in additional-paid-in-capital 
in the period that they become realized. 

In December 2014, the President signed into law The Tax Increase Prevention Act of 2014 (the “2014 Act”).  Under prior 
law, a taxpayer was entitled to a research credit for qualifying amounts paid or incurred on or before December 31, 2013. 
The 2014 Act extends the research credit to December 31, 2014. As a result of the retroactive extension, the Company had 
an increase to its federal R&D credits of approximately $1.9 million for qualifying amounts incurred in 2014. However, due 
to the Company’s current valuation allowance position, the credit did not result in a tax benefit. 

In the event of a change in ownership, as defined under federal and state tax laws, the Company's net operating loss and tax 
credit carryforwards could be subject to annual limitations.  The annual limitations could result in the expiration of the net 
operating loss and tax credit carryforwards prior to utilization. 

At December 31, 2014, the Company had $16.4 million of unrecognized tax benefits, $4.8 million of which would affect its 
effective tax rate if recognized after considering the valuation allowance. At December 31, 2013, the Company had $14.9 
million of unrecognized tax benefits, $5.0 million of which would affect its effective tax rate if recognized after considering 
the valuation allowance.  

64 

  
  
  
   
  
  
  
 
 
A reconciliation of the beginning and ending amount of gross unrecognized tax benefits is as follows (in thousands): 

Balance as at January 1, 2012 ...............................................................................................................    $ 
Gross increase for tax position of prior year  ....................................................................................      
Gross increase for tax position of current year  .................................................................................      
Balance as of December 31, 2012 .........................................................................................................      
Gross increase for tax position of prior year .....................................................................................      
Gross increase for tax position of current year ..................................................................................      
Reduction for prior year tax position .................................................................................................      
Balance as of December 31, 2013 .........................................................................................................      
Gross increase for tax position of prior year .....................................................................................      
Gross increase for tax position of current year ..................................................................................      
Reduction for prior year tax position .................................................................................................      
Balance as of December 31, 2014 .........................................................................................................    $ 

12,204  
188  
689  
13,081  
646  
1,528  
(333)
14,922  
584  
1,760  
(860)
16,406  

The Company recognizes interest and penalties, if any, related to uncertain tax positions in its income tax provision. As of 
December 31, 2014 and 2013, the Company has approximately $0.5 million and $0.8 million, respectively, of accrued interest 
related to uncertain tax positions, which were recorded in long-term income tax liabilities in the Consolidated Balance Sheets. 

Uncertain tax positions relate to the allocation of income and deductions among the Company’s global entities and to the 
determination of the research and development tax credit. It is reasonably possible that over the next twelve-month period, 
the Company may experience increases or decreases in its unrecognized tax benefits. However, it is not possible to determine 
either the magnitude or the range of increases or decreases at this time. 

In Switzerland where the Company designs and sells certain of its products, the Company’s earnings are currently subject to 
a tax holiday.  The tax holiday is currently being reviewed for an extension through 2018 by local Swiss tax authorities. The 
benefit resulting from the tax holiday had an insignificant impact on earnings per share for the year ended December 31, 
2014.  

On September 13, 2013, the U.S. Treasury Department and the IRS issued final regulations that address costs incurred in 
acquiring, producing, or improving tangible property (the "tangible property regulations"). The tangible property regulations 
are effective for tax years beginning on or after January 1, 2014. Given its full valuation allowance, the regulations did not 
have a material impact on the Company’s consolidated financial position, results of operations or cash flows. 

Income Tax Audits 

The Company is subject to examination of its income tax returns by the IRS and other tax authorities. The Company’s U.S. 
Federal income tax returns for the years ended December 31, 2005 through December 31, 2007 are under examination by the 
IRS.  In  April 2011,  the  Company  received from  the  IRS a  Notice of  Proposed  Adjustment  ("NOPA") relating  to  a  cost-
sharing agreement entered into by the Company and its international subsidiaries on January 1, 2004. In the NOPA, the IRS 
objected to the Company’s allocation of certain litigation expenses between the Company and its international subsidiaries 
and the amount of "buy-in payments" made by the international subsidiaries to the Company in connection with the cost-
sharing  agreement,  and  proposed  to  increase  the  Company’s  U.S.  taxable  income  according  to  a  few  alternative 
methodologies. In February 2012, the Company received a revised NOPA from the IRS (“Revised NOPA”). In this Revised 
NOPA, the IRS raised the same issues as in the NOPA issued in April 2011 but under a different methodology. Under the 
Revised NOPA, the largest potential federal income tax payment, if the IRS were to prevail on all matters in dispute, is $10.5 
million, plus interest and penalties, if any. The Company responded to the IRS Revised NOPA in May 2012. In June 2013, 
the IRS responded and continued to disagree with the Company’s rebuttal. The Company met with the IRS Office of Appeals 
in 2014, had additional discussions again in 2015, and both parties have been in continuous discussions for a resolution of 
the matter. However, there is no guarantee these discussions will be conclusive. Meanwhile, the Company agreed to grant 
the IRS an extension of the statute of limitations for taxable years 2005 through 2007 to September 30, 2015.  

The IRS also audited the research and development credits carried forward into year 2005 and the credits generated in the 
years 2005 through 2007. The Company received a NOPA from the IRS in February 2011, proposing to reduce the research 
and development credits generated in years 2005 through 2007 and the carryforwards, which would then reduce the value of 
such credits carried forward to subsequent tax years. 

65 

  
  
  
  
  
  
  
  
  
The Company reviewed and responded to the above proposed adjustments. The Company regularly assesses the likelihood 
of an adverse outcome resulting from such examinations to determine the adequacy of its provision for income taxes. As of 
December 31, 2014, based on the technical merits of its tax return filing positions and the interactions to date with the IRS, 
the Company believes that it is more-likely-than-not that the resolution of the audits will not have a material impact on its 
consolidated financial position, results of operations and cash flows. 

12.  COMMITMENTS AND CONTINGENCIES 

Lease Obligations 

As  of  December  31,  2014,  future  minimum  payments  under  the  non-cancelable  operating  leases  were  as  follows  (in 
thousands): 

2015 ......................................................................................................................................................    $ 
2016 ......................................................................................................................................................      
2017 ......................................................................................................................................................      
2018 and thereafter................................................................................................................................      
Total ......................................................................................................................................................    $ 

1,094  
763  
297  
168  
2,322  

In September 2004, the Company entered into a lease arrangement for its manufacturing facility located in Chengdu, China. 
The Company has the option to acquire the facility for approximately $1.6 million which consists of total construction costs 
minus total rent paid by the Company during the lease term. This option became exercisable in March 2011. The Company 
may exercise its purchase option and enter into a purchase agreement for this facility in the future. 

The Company also leases sales and research and development offices in the United States, Japan, China, Europe, Taiwan and 
Korea.  Certain  of  the  Company’s  facility  leases  provide  for  periodic  rent  increases.  Rent  expense  for  the  years  ended 
December 31, 2014, 2013 and 2012 was $1.5 million, $1.2 million and $1.6 million, respectively. 

Warranty and Indemnification Provisions 

The Company generally provides a standard one to two-year warranty against defects in materials and workmanship and will 
either repair the goods or provide replacements at no charge to the customer for defective units. In such cases, the Company 
accrues for the related costs at the time the decision to permit the return is made. Reserve requirements are recorded in the 
period of sale and are based on an assessment of the products sold with warranty and historical warranty costs incurred. 

The changes in warranty reserves are as follows (in thousands): 

Year Ended December 31, 
2013 

2012

2014

Balance at beginning of period .....................................................   $
Warranty provision for product sales ...........................................    
Settlements made .........................................................................    
Unused warranty provision ..........................................................    
Balance at end of period ...............................................................   $

451     $
282      
(42)    
(451)    
240     $

331    $ 
476      
(117)     
(239)     
451    $ 

561  
917  
(675)
(472)
331  

The Company provides indemnification agreements to certain direct or indirect customers. The Company agrees to reimburse 
these parties for any damages, costs and expenses incurred by them as a result of legal actions taken against them by third 
parties for infringing upon their intellectual property rights as a result of using the Company’s products and technologies. 
These  indemnification  provisions  are  varied  in  their  scope  and  are  subject  to  certain  terms,  conditions,  limitations  and 
exclusions.  There  were  no  indemnification  liabilities  incurred  in  2014,  2013  and  2012.  The  Company  also  provides  for 
indemnification of its directors and officers. 

66 

  
  
  
  
  
  
  
  
  
  
  
 
 
  
 
   
    
 
  
  
 
 
13.  LITIGATION 

The  Company  and  certain  of  its  subsidiaries  are  parties  to  actions  and  proceedings  in  the  ordinary  course  of  business, 
including litigation regarding its shareholders and its intellectual property, challenges to the enforceability or validity of its 
intellectual property and claims  that the Company’s products infringe on the intellectual property rights of others. These 
proceedings often involve complex questions of fact and law and may require the expenditure of significant funds and the 
diversion of other resources to prosecute and defend. The Company defends itself vigorously against any such claims. 

O2 Micro  

In May 2012, the United States District Court for the Northern District of California (the “District Court”) issued an order 
finding O2 Micro International, Ltd. (“O2 Micro”) liable for approximately $9.1 million in attorneys’ fees and non-taxable 
costs, plus interest, in connection with the patent litigation that the Company won in 2010.  This award was in addition to the 
approximately $0.3 million in taxable costs that the District Court had earlier ordered O2 Micro to pay to the Company in 
connection with the same lawsuit.  In October 2012, O2 Micro appealed the District Court’s judgment to the United States 
Court of Appeals for the Federal Circuit (the “Federal Circuit”). In August 2013, the Federal Circuit affirmed O2 Micro’s 
liability for the full amount of the award.  In September 2013, O2 Micro filed a petition for rehearing of that ruling, but the 
Federal Circuit denied O2 Micro’s petition for rehearing in October 2013.  

In November 2013, the Company received a cash payment of $9.5 million from O2 Micro. In January 2014, O2 Micro filed 
an appeal with the United States Supreme Court. Had O2 Micro been successful in obtaining a favorable ruling against the 
Company, the Company could have been liable to return a portion or all of the $9.5 million to O2 Micro. Accordingly, the 
Company recorded the $9.5 million as a current liability as of December 31, 2013. 

In  March  2014,  the  Supreme  Court  declined  to  hear  the  case.  As  O2  Micro  had  no  further  legal  avenues  to  appeal,  the 
Company released the current liability of $9.5 million and recorded the award as a credit to litigation benefit, net, in the 
Consolidated Statements of Operations in the first quarter of 2014. In addition, the Company incurred additional legal fees 
of $0.5 million in connection with the final resolution of the lawsuit. 

Silergy 

In December 2011, the Company entered into a settlement and license agreement with Silergy Corp. and Silergy Technology 
for infringement of the Company’s patent whereby the Company would receive a total of $2.0 million.  The first $1.2 million 
was paid in equal installments of $300,000 in each quarter of 2012 and the remainder was paid in two equal installments in 
the first two quarters of 2013. No further amount was due to the Company as of December 31, 2013. All amounts were 
recorded as credits to litigation benefit, net, in the Consolidated Statements of Operations in the periods the proceeds were 
received. 

Linear 

In August 2012, the United States Court of Appeals for the Federal Circuit issued an order affirming the judgment issued by 
the United States District Court for the District of Delaware finding Linear Technology Corporation (“Linear”) liable for 
approximately $2.3 million in attorneys’ fees and non-taxable costs, plus interest, in connection with the litigation regarding 
a contract dispute that the Company won in 2011. During the fourth quarter of 2012, the Company received a payment from 
Linear of $2.3 million plus $0.2 million reimbursement of additional attorney fees in connection with the cost of defending 
the appeal, which was recorded as a credit to litigation benefit, net, in the Consolidated Statements of Operations.  

14.  EMPLOYEE BENEFIT PLAN 

The Company sponsors a 401(k) retirement savings plan for all employees in the United States who meet certain eligibility 
requirements. Participants may contribute up to the amount allowable as a deduction for federal income tax purposes. The 
Company is not required to contribute and did not contribute to the plan in 2014, 2013 and 2012. 

67 

  
  
  
  
   
  
  
  
  
  
  
  
 
 
15.  SIGNIFICANT CUSTOMERS 

The  Company  sells  its  products  primarily  through  third-party  distributors,  value-added  resellers  and  directly  to  original 
equipment manufacturers, original design manufacturers, and electronic manufacturing service providers. The following table 
summarizes those customers with sales greater than 10% of the Company's total revenue or accounts receivable balances 
greater than 10% of the Company’s total accounts receivable:  

Revenue
Year Ended December 31,
2013

2012

Accounts Receivable
As of December 31,

2014 

2013

26%    
*       

32%   
10%   

32%   
*      

31%     
10%     

32%
17%

2014 

Customers 
Distributor A .......     
Distributor B .......     
____________ 
* Represents less than 10%. 

Both  of  the  customers  are  third-party  distributors.  The  Company’s  agreements  with  these  distributors  were  made  in  the 
ordinary course of business and may be terminated with or without cause by either party with advance notice. Although the 
Company may experience a short-term disruption in the distribution of its products and a short-term decline in revenue if its 
agreement with either of these distributors was terminated, the Company believes that such termination would not have a 
material adverse effect on its financial statements because it would be able to engage alternative distributors, resellers and 
other distribution channels to deliver its products to end customers within a few quarters following the termination of any 
agreement with a distributor. 

16.  SEGMENT AND GEOGRAHPIC INFORMATION  

The  Company  operates  in  one  reportable  segment  that  includes  the  design,  development,  marketing  and  sale  of  high-
performance, mixed-signal analog semiconductors for the communications, storage and computing, consumer and industrial 
markets. The Company’s chief operating decision maker is its chief executive officer, who reviews financial information 
presented on a consolidated basis. The Company derives a majority of its revenue from sales to customers located outside 
North America, with geographic revenue based on the customers’ ship-to locations. 

The following is a summary of revenue by geographic regions (in thousands): 

Country or Region 
China  .................................................................................................   $
Taiwan ...............................................................................................    
Europe  ...............................................................................................    
Korea  .................................................................................................    
Southeast Asia ....................................................................................    
Japan  .................................................................................................    
United States ......................................................................................    
Other  .................................................................................................    
Total  ..................................................................................................   $

Year Ended December 31,
2013 

2012

2014

181,050     $
38,460      
19,830      
14,362      
13,993      
8,251      
6,392      
197      
282,535     $

141,400     $ 
34,248       
15,351       
9,992       
21,760       
7,495       
7,525       
320       
238,091     $ 

124,278  
27,477  
16,201  
9,434  
21,641  
8,516  
5,711  
555  
213,813  

The following is a summary of revenue by product family (in thousands): 

Product Family 
DC to DC products ...........................................................   $
Lighting control products .................................................    
Total  ................................................................................   $

2014

Year Ended December 31, 
2013 

2012

253,083     $
29,452      
282,535     $

211,337     $ 
26,754       
238,091     $ 

188,736  
25,077  
213,813  

68 

  
  
  
  
 
 
 
  
  
 
 
 
  
     
 
 
 
 
     
 
  
  
  
  
  
  
 
 
 
   
    
 
  
  
  
 
 
 
   
    
 
  
 
 
The following is a summary of long-lived assets by geographic regions (in thousands): 

Country 
China ................................................................................................................   $
United States ....................................................................................................    
Bermuda ...........................................................................................................    
Other ................................................................................................................    
Total .................................................................................................................   $

17. ACCUMULATED OTHER COMPREHENSIVE INCOME 

As of December 31,

2014

2013

37,147     $ 
33,913       
13,383       
339       
84,782     $ 

41,557  
24,719  
- 
205  
66,481  

The following table summarizes the changes in accumulated other comprehensive income (in thousands): 

Unrealized 
Losses 
on Auction-
Rate 
Securities

Unrealized 
Gains 
(Losses) on 
Other 
Available-for-
Sale  
Securities

Foreign 
Currency  
Translation  
Adjustments 

Total

(490)   $

37    $

4,628    $ 

130     

-     

130     
(360)    

179     

-     

179     
(181)   $

(29)    

(4)    

(33)    
4     

(17)    

(2)    

(19)    
(15)   $

1,988      

-      

1,988      
6,616      

(609)     

-      

(609)     
6,007    $ 

4,175 

2,089 

(4)

2,085 
6,260 

(447)

(2)

(449)
5,811 

Balance as of January 1, 2013 ......................   $
Other comprehensive income (loss) 

before reclassifications .......................     

Amounts reclassified from accumulated 

other comprehensive income ..............     

Net current period other comprehensive 

income (loss).......................................     
Balance as of December 31, 2013 ................     
Other comprehensive income (loss) 

before reclassifications .......................     

Amounts reclassified from accumulated 

other comprehensive income ..............     

Net current period other comprehensive 

income (loss).......................................     
Balance as of December 31, 2014 ................   $

The amounts reclassified from accumulated other comprehensive income were recorded in interest and other income, net, in 
the Consolidated Statement of Operations. 

69 

  
  
 
 
 
    
 
  
  
  
  
  
   
   
    
 
  
  
 
 
18. QUARTERLY FINANCIAL DATA (UNAUDITED) 

Three Months Ended 

March  
31, 2014

June  
30, 2014

September 
30, 2014 

December 
31, 2014

(in thousands, except per share amounts) 

Revenue  .......................................................................................   $
Cost of revenue  ...........................................................................    
Gross profit  .......................................................................    

60,061    $
27,964     
32,097     

68,436     $ 
31,337       
37,099       

78,335     $
35,872      
42,463      

Operating expenses: 

Research and development  ......................................................    
Selling, general and administrative  ..........................................    
Litigation expense (benefit), net ...............................................    
Total operating expenses  ..................................................    
Income from operations  ..............................................................    
Interest and other income, net ......................................................    
Income before income taxes  ........................................................    
Income tax provision (benefit) .....................................................    
Net income  ..................................................................................   $

15,603     
16,109     
(8,700)    
23,012     
9,085     
190     
9,275     
257     
9,018    $

13,368       
16,853       
274       
30,495       
6,604       
295       
6,899       
502       
6,397     $ 

14,679      
17,006      
332      
32,017      
10,446      
202      
10,648      
(573)    
11,221     $

75,703  
34,744  
40,959  

14,941  
16,787  
66  
31,794  
9,165  
407  
9,572  
712  
8,860  

Net income per share: 

Basic ......................................................................................   $
Diluted ..................................................................................   $

0.23    $
0.23    $

0.17     $ 
0.16     $ 

0.29     $
0.28     $

0.23  
0.22  

Weighted-average shares outstanding: 

Basic ......................................................................................    
Diluted ..................................................................................    

38,470     
39,517     

38,684       
39,608       

38,785      
39,727      

38,807  
40,321  

Cash dividends declared per common share ................................   $

-    $

0.15     $ 

0.15     $

0.15  

Three Months Ended 

March  
31, 2013

June  
30, 2013

September 
30, 2013 

December 
31, 2013

(in thousands, except per share amounts) 

Revenue  .......................................................................................   $
Cost of revenue  ...........................................................................    
Gross profit  .......................................................................    

51,470    $
24,085     
27,385     

57,714     $ 
26,786       
30,928       

65,347     $
30,053      
35,294      

Operating expenses: 

Research and development  ......................................................    
Selling, general and administrative  ..........................................    
Litigation expense (benefit), net ...............................................    
Total operating expenses  ..................................................    
Income from operations  ..............................................................    
Interest and other income (expense), net ......................................    
Income before income taxes  ........................................................    
Income tax provision (benefit) .....................................................    
Net income  ..................................................................................   $

12,123     
13,258     
(301)    
25,080     
2,305     
(10)    
2,295     
(204)    
2,499    $

12,478       
13,793       
(257)     
26,014       
4,914       
218       
5,132       
(357)     
5,489     $ 

12,643      
13,891      
104      
26,638      
8,656      
(59)    
8,597      
1,187      
7,410     $

63,560  
29,266  
34,294  

12,487  
13,683  
84  
26,254  
8,040  
(57)
7,983  
484  
7,499  

Net income per share: 

Basic ......................................................................................   $
Diluted ..................................................................................   $

0.07    $
0.07    $

0.15     $ 
0.14     $ 

0.20     $
0.19     $

0.20  
0.19  

Weighted-average shares outstanding: 

Basic ......................................................................................    
Diluted ..................................................................................    

36,259     
37,708     

37,053       
38,239       

37,910      
39,009      

38,328  
39,524  

Cash dividends declared per common share ................................   $

-    $

-    $ 

-    $

- 

70 

  
  
 
 
  
 
   
    
   
 
  
 
 
      
        
        
        
 
  
      
        
        
        
 
      
        
        
        
 
      
        
        
        
 
  
      
        
        
        
 
   
  
 
 
  
 
   
    
   
 
  
 
 
      
        
        
        
 
  
      
        
        
        
 
      
        
        
        
 
      
        
        
        
 
  
      
        
        
        
 
    
ITEM 9.  CHANGES  IN  AND  DISAGREEEMENTS  WITH  ACCOUNTANTS  ON  ACCOUNTING  AND 

FINANCIAL DISCLOSURE 

None. 

ITEM 9A.    CONTROLS AND PROCEDURES 

Evaluation of Disclosure Controls and Procedures 

Our management, with the participation of our chief executive officer and chief financial officer, evaluated the effectiveness 
of our disclosure controls and procedures pursuant to Rule 13a-15(e) and Rule 15d-15(e) under the Securities Exchange Act 
of 1934 as of the end of the period covered by this Annual Report on Form 10-K.   

Based on this evaluation, our chief executive officer and chief financial officer concluded that, as of December 31, 2014, our 
disclosure  controls  and  procedures  are  designed  at  a  reasonable  assurance  level  and  are  effective  to  provide  reasonable 
assurance that information we are required to disclose in reports that we file or submit under the Exchange Act is recorded, 
processed, summarized, and reported within the time periods specified in the SEC’s rules and forms, and that such information 
is accumulated and communicated to our management, including our chief executive officer and chief financial officer, as 
appropriate, to allow timely decisions regarding required disclosure. 

Management’s Report on Internal Control over Financial Reporting 

Our  management  is  responsible  for  establishing  and  maintaining  adequate  internal  control  over  financial  reporting.  Our 
management  conducted  an  evaluation  of  the  effectiveness  of  our  internal  control  over  financial  reporting  based  on  the 
framework in Internal Control—Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the 
Treadway Commission. Based on this evaluation, management concluded that our internal control over financial reporting 
was effective as of December 31, 2014. Management reviewed the results of its assessment with our Audit Committee.  

Our  independent  registered  public  accounting  firm,  Deloitte  &  Touche  LLP,  which  audited  the  consolidated  financial 
statements included in this Annual Report on Form 10-K, has issued an attestation report on the effectiveness of our internal 
control over financial reporting.  

Changes in Internal Control over Financial Reporting 

We completed the acquisition of Sensima Technology SA (“Sensima”) in July 2014 and are currently evaluating the internal 
control at Sensima. We intend to include the acquired entity in our assessment of the effectiveness of internal control over 
financial reporting in the annual management report following the first anniversary of the acquisition. Other than the Sensima 
acquisition, there were no changes in our internal control over financial reporting that occurred during the quarter ended 
December  31,  2014  that  have  materially  affected,  or  are  reasonably  likely  to  materially  affect,  our  internal  control  over 
financial reporting. 

Limitations on Effectiveness of Controls and Procedures 

In designing and evaluating the disclosure controls and procedures, management recognizes that any controls and procedures, 
no matter how well designed and operated, can provide only reasonable assurance of achieving the desired control objectives. 
In addition, the design of disclosure controls and procedures must reflect the fact that there are resource constraints and that 
management is required to apply its judgment in evaluating the benefits of possible controls and procedures relative to their 
costs. 

71 

 
  
  
  
  
  
  
  
  
  
  
  
  
  
  
 
 
REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 

To the Board of Directors and Stockholders of 
Monolithic Power Systems, Inc. 
San Jose, California 

We  have  audited  the  internal  control  over  financial  reporting  of  Monolithic  Power  Systems,  Inc.  and  subsidiaries  (the 
"Company") as of December 31, 2014, based on criteria established in Internal Control - Integrated Framework (2013) issued 
by  the  Committee  of  Sponsoring  Organizations  of  the  Treadway  Commission  (the  COSO  criteria).  The  Company's 
management is responsible for maintaining effective internal control over financial reporting and for its assessment of the 
effectiveness of internal control over financial reporting, included in the accompanying Management’s Report on Internal 
Control Over Financial Reporting. Our responsibility is to express an opinion on the Company's internal control over financial 
reporting based on our audit. 

We  conducted  our  audit  in  accordance  with  the  standards  of  the  Public  Company  Accounting  Oversight  Board  (United 
States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective 
internal  control  over  financial  reporting  was  maintained  in  all  material  respects.  Our  audit  included  obtaining  an 
understanding  of  internal  control  over  financial  reporting,  assessing  the  risk  that  a  material  weakness  exists,  testing  and 
evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other 
procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our 
opinion. 

A company's internal control over financial reporting is a process designed by, or under the supervision of, the company's 
principal executive and principal financial officers, or persons performing similar functions, and effected by the company's 
board of directors, management, and other personnel to provide reasonable assurance regarding the reliability of financial 
reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting 
principles. A company's internal control over financial reporting includes those policies and procedures that (1) pertain to the 
maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets 
of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial 
statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company 
are  being  made  only  in  accordance  with  authorizations  of  management  and  directors  of  the  company;  and  (3)  provide 
reasonable  assurance  regarding  prevention  or  timely  detection  of  unauthorized  acquisition,  use,  or  disposition  of  the 
company's assets that could have a material effect on the financial statements. 

Because  of  the  inherent  limitations  of  internal  control  over  financial  reporting,  including  the  possibility  of  collusion  or 
improper management override of controls, material misstatements due to error or fraud may not be prevented or detected on 
a timely basis. Also, projections of any evaluation of the effectiveness of the internal control over financial reporting to future 
periods are subject to the risk that the controls may become inadequate because of changes in conditions, or that the degree 
of compliance with the policies or procedures may deteriorate. 

In our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of 
December 31, 2014, based on the COSO criteria. 

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States), 
the consolidated financial statements as of and for the year ended December 31, 2014 of the Company and our report dated 
March 2, 2015 expressed an unqualified opinion on those financial statements. 

/s/ DELOITTE & TOUCHE LLP 

San Jose, California 
March 2, 2015 

72 

  
  
  
  
  
  
  
  
  
  
  
 
 
ITEM 9B.   OTHER INFORMATION 

None. 

PART III 

ITEM 10.    DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE 

Reference is made to the information regarding directors and nominees, code of ethics, corporate governance matters and 
disclosure relating to compliance with Section 16(a) of the Securities Exchange Act of 1934 appearing under the captions 
“Election of Directors” and “Compliance with Section 16(a) Beneficial Ownership Reporting Compliance” in the Company’s 
Proxy Statement for its Annual Meeting of Stockholders (the “2015 Annual Meeting”), which information is incorporated in 
this  Annual  Report  on  Form  10-K  by  reference.  Information  regarding  executive  officers  is  set  forth  under  the  caption 
“Executive Officers of the Registrant” in Part I of this Annual Report on Form 10-K. 

ITEM 11.    EXECUTIVE COMPENSATION 

The information required by this item will be set forth under “Executive Officer Compensation” in the Company’s Proxy 
Statement for the 2015 Annual Meeting, and is incorporated herein by reference. 

ITEM 12.  SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND 

RELATED STOCKHOLDER MATTERS 

The information required by this item will be set forth under the captions “Security Ownership of Certain Beneficial Owners 
and Management” and “Equity Compensation Plan Information” in the Company’s Proxy Statement for the 2015 Annual 
Meeting, and is incorporated herein by reference. 

ITEM 13.  CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR 

INDEPENDENCE 

The information required by this item will be set forth under the captions “Certain Relationships and Related Transactions” 
and “Election of Directors” in the Company’s Proxy Statement for the 2015 Annual Meeting, and is incorporated herein by 
reference. 

ITEM 14.    PRINCIPAL ACCOUNTANT FEES AND SERVICES 

The information required by this item will be set forth under the caption “Audit and Other Fees” in the Company’s Proxy 
Statement for the 2015 Annual Meeting, and is incorporated herein by reference. 

73 

  
  
  
  
  
  
  
 
  
  
 
  
  
  
  
   
  
  
 
 
ITEM 15.    EXHIBITS AND FINANCIAL STATEMENT SCHEDULES. 

PART IV 

(a) Documents filed as part of this report 

(1) All financial statements 

Report of Independent Registered Public Accounting Firm 
Consolidated Balance Sheets 
Consolidated Statements of Operations 
Consolidated Statements of Comprehensive Income 
Consolidated Statements of Stockholders’ Equity 
Consolidated Statements of Cash Flows 
Notes to Consolidated Financial Statements 

(2) Schedules 

All schedules have been omitted because the required information is not present or not present in amounts sufficient to require 
submission of the schedules, or because the information required is included in the consolidated financial statements or notes 
thereto. 

(3) Exhibits 

Exhibit 
Number    

Description

3.1 (1) 

  Amended and Restated Certificate of Incorporation. 

3.2 (2) 

  Amended and Restated Bylaws. 

10.1+ (3) 

  Registrant’s 1998 Stock Plan and form of option agreement. 

10.2+ (4) 

  Registrant’s 2004 Employee Stock Purchase Plan and form of subscription agreement. 

10.3+ (5) 

  Form of Directors’ and Officers’ Indemnification Agreement. 

10.4† (6) 

  Foundry Agreement between the Registrant and Advanced Semiconductor Manufacturing Corp. of Shanghai,
dated August 14, 2001. 

10.5+ (7) 

  Employment Agreement with Michael Hsing and Amendment thereof. 

10.6+ (8) 

  Employment Agreement with Maurice Sciammas and Amendment thereof. 

10.7+ (9) 

  Employment Agreement with Jim Moyer. 

10.8+(10)    Employment Agreement with Deming Xiao and Amendment thereof. 

10.9 (11) 

  Distribution Agreement with Asian Information Technology Inc. Ltd., dated March 1, 2004. 

10.10†(12)   Investment and Cooperation Contract, dated August 19, 2004. 

10.11+(13)   Form of Performance Unit Agreement. 

10.12+(14)   Letter Agreement with Victor Lee. 

10.13+(15)   Letter Agreement with Douglas McBurnie. 

74 

  
  
  
  
  
  
  
  
   
     
   
     
   
     
   
     
   
     
   
     
   
     
   
     
  
    
   
     
   
     
   
     
  
    
  
    
  
    
 
  
  
  
10.14+(16)   Letter Agreement with Karen A. Smith Bogart. 

10.15+(17)   Registrant’s Employee Bonus Plan, as amended effective March 6, 2008. 

10.16+(18)   Form of Restricted Stock Award Agreement. 

10.17+(19)   Letter Agreement with Jeff Zhou. 

10.18+(20)   Employment Agreement with Meera P. Rao and Saria Tseng and Amendments thereof. 

10.19+(21)     Monolithic Power Systems, Inc. Master Cash Performance Bonus Plan. 

10.20+(22)   Letter Agreement with Eugen Elmiger. 

 10.21+(23)    Monolithic Power Systems, Inc. 2004 Equity Incentive Plan, as Amended, and Form of Grant Agreement. 

 10.22+(24)   Monolithic Power Systems, Inc. 2014 Equity Incentive Plan and Form of Grant Agreement. 

21.1 

  Subsidiaries of Monolithic Power Systems, Inc. 

23.1 

  Consent of Independent Registered Public Accounting Firm. 

24.1 

  Power of Attorney (included on Signature page to this Form 10-K). 

31.1 

31.2 

  Certification of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as 
adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 

  Certification of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a), as 
adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 

32.1* 

  Certification  of  Chief  Executive  Officer  and  Chief  Financial  Officer  pursuant  to  18  U.S.C.  Section  1350,  as
adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002. 

101.INS    XBRL Instance 

101.SCH   XBRL Taxonomy Extension Schema 

101.CAL  XBRL Taxonomy Extension Calculation 

101.DEF   XBRL Taxonomy Extension Definition 

101.LAB  XBRL Taxonomy Extension Labels 

101.PRE   XBRL Taxonomy Extension Presentation 

+ 
† 

* 

(1) 

(2) 

(3) 

Management contract or compensatory plan or arrangement. 
Confidential  treatment  requested  for  portions  of  this  agreement,  which  portions  have  been  omitted  and  filed
separately with the Securities and Exchange Commission 
This  exhibit  shall  not  be  deemed  “filed”  for  purposes  of  Section  18  of  the  Securities  Exchange  Act  of  1934  or
otherwise subject to the liabilities of that Section, nor shall it be deemed incorporated by reference in any filings
under the Securities Act of 1933 or the Securities Exchange Act of 1934, whether made before or after the date
hereof and irrespective of any general incorporation language in any filings. 
Incorporated by reference to Exhibit 3.2 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 15, 2004. 
Incorporated by reference to Exhibit 3.4 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 15, 2004. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s Registration Statement on Form S-1 (Registration No. 
333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 

75 

  
    
  
    
  
    
  
    
   
  
    
  
    
  
    
  
   
     
   
     
   
     
   
     
   
     
   
     
   
     
   
     
   
     
   
     
   
     
(4) 

(5) 

(6) 

(7) 

(8) 

(9) 

(10) 

(11) 

(12) 

(13) 

(14) 

(15) 

(16) 

(17) 

(18) 

(19) 

(20) 

(21) 

(22) 

(23) 

(24) 

Incorporated by reference to Exhibit 10.3 of the Registrant’s Registration Statement on Form S-1 (Registration No. 
333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 
Incorporated by reference to Exhibit 10.4 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 15, 2004. 
Incorporated by reference to Exhibit 10.5 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on November 2, 2004. 
Incorporated by reference to Exhibit 10.7 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 11, 2008 and Exhibit 10.1 of the Registrant’s current
report on Form 8-K (File No. 000-51026), filed with the Securities and Exchange Commission on December 19,
2008. 
Incorporated by reference to Exhibit 10.8 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 11, 2008 and Exhibit 10.3 of the Registrant’s current
report on Form 8-K (File No. 000-51026), filed with the Securities and Exchange Commission on December 19, 
2008. 
Incorporated by reference to Exhibit 10.9 of the Registrant’s Registration Statement on Form S-1 (Registration No. 
333-117327), filed with the Securities and Exchange Commission on July 13, 2004. 
Incorporated by reference to Exhibit 10.10 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 11, 2008 and Exhibit 10.4 of the Registrant’s current
report on Form 8-K (File No. 000-51026), filed with the Securities and Exchange Commission on December 19,
2008. 
Incorporated by reference to Exhibit 10.11 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on September 10, 2004. 
Incorporated by reference to Exhibit 10.13 of the Registrant’s Registration Statement on Form S-1/A (Registration 
No. 333-117327), filed with the Securities and Exchange Commission on September 10, 2004. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on November 1, 2006. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on September 14, 2006. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on May 25, 2007. 
Incorporated by reference to Exhibit 10.2 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on May 25, 2007. 
Incorporated by reference to Exhibit 10.31 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 11, 2008. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on February 15, 2008. 
Incorporated by reference to Exhibit 10.1 of the Registrant’s current report on Form 8-K (File No. 000-51026), filed 
with the Securities and Exchange Commission on February 3, 2010. 
Incorporated by reference to Exhibit 10.33 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 4, 2011. 
Incorporated  by  reference  to  Annexure  C  of  the  Registrant’s  Proxy  Statement  on  Schedule  14A  (File  No.  000-
51026), filed with the Securities and Exchange Commission on April 30, 2013. 
Incorporated by reference to Exhibit 10.36 of the Registrant’s annual report on Form 10-K (File No. 000-51026), 
filed with the Securities and Exchange Commission on March 10, 2014. 
Incorporated by reference to Exhibit 4.4 of the Registrant’s Registration Statement on Form S-8 (Registration No. 
333-199782), filed with the Securities and Exchange Commission on November 3, 2014. 
Incorporated by reference to Exhibit 4.6 of the Registrant’s Registration Statement on Form S-8 (Registration No. 
333-199782), filed with the Securities and Exchange Commission on November 3, 2014. 

76 

   
   
 
 
Pursuant  to  the  requirements  of  Section 13  or  15(d) of  the  Securities  Exchange Act  of  1934,  the  registrant  has duly 

caused this Annual Report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized. 

SIGNATURES 

Date: March 2, 2015 

MONOLITHIC POWER SYSTEMS, INC.    

By:  /s/ MICHAEL R. HSING 
   Michael R. Hsing 

President and Chief Executive Officer 

KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and 
appoints  Michael  R.  Hsing  and  Meera  P.  Rao,  jointly  and  severally,  his  or  her  attorneys-in-fact,  each  with  the  power  of 
substitution, for him or her in any and all capacities, to sign any amendments to this Annual Report on Form 10-K, and to 
file  the  same,  with  exhibits  thereto  and  other  documents  in  connection  therewith,  with  the  Securities  and  Exchange 
Commission, hereby ratifying and confirming all that each of said attorneys-in-fact, or his or her substitute or substitutes, 
may do or cause to be done by virtue hereof. 

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below on March 2, 

2015 by the following persons on behalf of the registrant and in the capacities indicated: 

/S/ MICHAEL R. HSING 
MICHAEL R. HSING 

/S/ MEERA P. RAO 
MEERA P. RAO 

   President, Chief Executive Officer, and Director (Principal Executive Officer) 

   Chief Financial Officer (Principal Financial and Accounting Officer) 

/S/ KAREN A. SMITH BOGART 
KAREN A. SMITH BOGART 

   Director 

/S/ HERBERT CHANG 
HERBERT CHANG 

/S/ EUGEN ELMIGER 
EUGEN ELMIGER 

/S/ VICTOR K. LEE 
VICTOR K. LEE 

/S/ JAMES C. MOYER 
JAMES C. MOYER 

/S/ JEFF ZHOU 
JEFF ZHOU 

   Director 

   Director 

   Director 

   Director 

   Director 

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