Powering a Greener Future ™

Investor Information & Tools

Board of Directors

Mike F. Chang Ph.D.
Chairman of the Board and Chief Executive Officer

Mike F. Chang, Ph.D., is the founder of our company and has served as our Chairman of the Board and Chief Executive Officer since the incorporation of our company. Dr. Chang has extensive experience in both technology development and business operations in the power semiconductor industry. Prior to establishing our company, Dr. Chang served as the Executive Vice President at Siliconix Incorporated, a subsidiary of Vishay Intertechnology Inc., a global manufacturer and supplier of discrete and other power semiconductors, or Siliconix, from 1998 to 2000. Dr. Chang also held various management positions at Siliconix from 1987 to 1998. Earlier in his career, Dr. Chang focused on product research and development in various management positions at General Electric Company from 1974 to 1987. Dr. Chang received his B.S. in electrical engineering from National Cheng Kung University, Taiwan, and M.S. and Ph.D. in electrical engineering from the University of Missouri. Dr. Chang’s extensive technological expertise and business experiences in the power semiconductor industry and his knowledge of our day-to-day operations and strategic initiatives provide our Board of Directors with valuable insights and in-depth understanding of our Company.

Yueh-Se Ho Ph.D.
Chief Operating Officer and Director

Yueh-Se Ho, Ph.D., is a co-founder of our company and has served as our Chief Operating Officer since January 2006 and our director since March 2006. Dr. Ho has held various operational management positions in our company since our inception, including the Vice President of Worldwide Operations from 2003 to 2006 and the Vice President of Back End Operations from 2000 to 2003. Prior to co-founding our company, Dr. Ho served as the Director of Packaging Development and Foundry Transfer at Siliconix from 1998 to 2000. Dr. Ho received his B.S. in chemistry from Tamkang University, Taiwan, and Ph.D. in chemistry from the University of Pittsburgh.  Dr. Ho’s extensive operating experience in the power semiconductor industry and his scientific and technical expertise in various aspects of the design and development of power semiconductor solutions enhance the Board’s understanding of the Company’s business operations.

Lucas S. Chang

Lucas S. Chang, Ph.D., has been a director of our company since November 2016. Since December 2016, Dr. Chang served as vice president, general counsel to Senhwa Biosciences, Inc., a drug development company listed on Taipei stock exchange. From February 2006 to September 2016, Dr. Chang was a senior partner at the global law firm Morgan, Lewis & Bockius LLP, which is our principal outside counsel. Dr. Chang’s legal practice at Morgan Lewis focused on general corporate, cross-border investment and M&A transactions, and intellectual property. Prior to that and from 1995 to 2006, Dr. Chang was a partner and an associate at several leading law firms, including Wilson Sonsini Goodrich & Rosati, Heller Ehrman & McAuliffe, and Coudert Brothers. From 1991 to 1995, he served as a staff attorney and a patent agent at IBM Intellectual Property and Licensing Services. From 1985 to 1991, he was a research staff member and technical team leader at IBM Research Division. From 1983 to 1985, Dr. Chang served as a Senior Development Scientist at Union Carbide Corporation.

Dr. Chang holds a B.S.E. in chemical engineering from National Taiwan University; a Ph.D. in chemical engineering from the University of Washington, and a J.D. from Santa Clara University School of Law. Dr. Chang’s extensive experience and knowledge in legal, regulatory compliance, corporate governance, and intellectual property matters in the U.S. and Asia, as well as his scientific and technical background in the semiconductor and computer industries, provide the Board with important expertise and skills in analyzing legal and business issues affecting our operations.

Robert I. Chen

Robert I. Chen has been a director of our company since November 2013.  Since November 2013, Mr. Chen served as the Chairman, President and Chief Executive Officer of AEssense Corporation, an agricultural technology company.  Mr. Chen founded several technology companies, including RAE Systems, Inc., a provider of rapidly deployable connected, intelligent gas and radiation detection systems, where Mr. Chen served as Chairman, President and Chief Executive Officer from its inception in 1991 until it was acquired by Honeywell, Inc. in June 2013.  Prior to founding RAE Systems, Mr. Chen founded Applied Optoelectronic Technology, a manufacturer of computer-aided test systems. He served as Chairman, President and Chief Executive Officer at Applied Optoelectronic Technology from 1981 to 1991.  In 1991, Applied Optoelectronic Technology was acquired by Hewlett Packard.  Mr. Chen served as Division General Manager at Hewlett Packard from 1991 to 1993.  Prior to founding Applied Optoelectronic Technology, Mr. Chen held various engineering and management positions at General Motors, General Electric, Tektronix and Fairchild Semiconductor.  Mr. Chen received a B.S.E.E. from Taiwan National Cheng Kung University, an M.S.E.E. from South Dakota School of Mines and Technology and an Advanced Engineering degree from Syracuse University. He also completed the Owner/President Management Program at the Harvard School of Business.  Mr. Chen’s extensive experience and background in establishing and managing technology-based public companies, as well as his experience in leading strategic transactions by major technology companies, provide the Board with valuable insight and expertise.

Dr. King Owyang

King Owyang, Ph.D., has been a director of our company since April 2013. He is the Chief Executive Officer and Executive Director of Computime Group Limited, a Hong Kong listed company and a leading global provider of electronic control technologies. Prior to joining Computime, Dr. Owyang held various positions at Siliconix Inc., a U.S. semiconductor company, for over 21 years, including the President and Chief Executive Officer. He was instrumental in leading Siliconix to become a highly profitable company with industry leading products. Under his leadership and management, Siliconix established itself as the world leader in power switching and management products and its sales grew to a record level in 2008. Prior to joining Siliconix, Dr. Owyang held various technical and managerial positions at General Electric Company, where he was responsible for developing many enabling semiconductor technologies. Dr. Owyang is a recognized leader in the power semiconductor industry. He has published over 20 technical papers and has been awarded more than 25 patents. Dr Owyang obtained his B.S. in Physics and his Ph.D in the field of Material Science in 1968 and 1974 respectively from the Massachusetts Institute of Technology, USA. Dr. Owyang’s broad experience in the power semiconductor industry, including his background in leadership positions at major technology companies, as well as his knowledge in the technical and operational aspects of semiconductor companies, provide the Board with an in-depth understanding of our business and operations.

Michael L. Pfeiffer

Michael L. Pfeiffer has been a director of our company since January 2014. From 2008 to 2013, Mr. Pfeiffer served as a member of the board of directors of BCD Semiconductor Manufacturing Limited, a company listed on NASDAQ until it was acquired in 2013. From 2009 to 2014, Mr. Pfeiffer served as a member of the board of directors of Integrated Memory Logic, Ltd., a semiconductor company listed on the Taiwan Stock Exchange until it was acquired in 2014. From 2014 to 2016, Mr. Pfeiffer served on the board of directors of Razer, Inc., a computer peripherals company. Mr. Pfeiffer, who is a certified public accountant in California and Oregon, worked for PricewaterhouseCoopers LLP for over 30 years, including 18 years as the engagement partner on the audits of the financial statements of high technology companies in the Silicon Valley. Mr. Pfeiffer received an MBA from the University of Oregon and a BA from Eckerd College in Florida. Mr. Pfeiffer’s extensive experience and expertise in the area of finance, accounting and auditing of publicly traded companies in the semiconductor industry, and his knowledge and background in working with companies with international operations, make him a valuable member of our Board, particularly in its role of exercising oversight and risk management of the Company’s accounting and financial reporting process.

Michael J. Salameh
Lead Independent Director

Michael J. Salameh has been a director of our company since November 2013 and the lead independent director since May 2015. Mr. Salameh co-founded PLX Technology, Inc., a semiconductor company (NASDAQ: PLXT), in May 1986 and served as its Chief Executive Officer until 2008. Mr. Salameh also served as a member of the Board of Directors of PLXT since its inception until it was acquired in August 2014 by Avago Technology. PLXT was a NASDAQ-listed company from 1999 until it was acquired. During his tenure at PLXT, Mr. Salameh personally participated in many of the key company functions including sales, marketing, engineering, accounting, and operations. Since 2010, Mr. Salameh served as a consultant to the Chief Executive Officer and Board of Directors of Analogix Semiconductor, Inc., a privately held semiconductor company. From 1980 through 1986, Mr. Salameh was employed in various marketing management positions with Hewlett-Packard Company. Mr. Salameh currently performs management consulting for private technology companies. Mr. Salameh received a B.S. in Engineering and Applied Science from Yale University and an M.B.A. from Harvard Business School. Mr. Salameh’s chief executive and marketing experience in the semiconductor industry, and his knowledge of the semiconductor business and financial landscape, including customers, markets, suppliers and competition, provide the Board with critical understanding of our business and operations.


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