Management Team

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., 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.

Yifan Liang has been serving as our Chief Financial Officer since August 2014 and Corporate Secretary since November 2013. Mr. Liang served as our Interim Chief Financial Officer from November 2013 to August 2014, our Chief Accounting Officer since October 2006, and our Assistant Corporate Secretary from November 2009 to November 2013. Mr. Liang joined our company in August 2004 as our Corporate Controller. Prior to joining us, Mr. Liang held various positions at PricewaterhouseCoopers LLP, or PwC, from 1995 to 2004, including Audit Manager in PwC's San Jose office. Mr. Liang received his B.S. in management information system from the People's University of China and M.A. in finance and accounting from the University of Alabama.

Stephen C. Chang serves as our Executive Vice President of Product Line Management since October 2019. Prior to that, he served in various management positions including Senior VP of Marketing, VP of the MOSFET Product Line and Senior Director of Product Marketing. Mr. Chang has over 20 years of industry experience and leads our Product Line Marketing with various managerial responsibilities, including new product development, product lifecycle management, business development, and business strategy. He received his B.A. in Electrical Engineering from University of California, Berkeley and M.B.A. from Santa Clara University.

Bing Xue, Ph.D., has been serving as our Senior Vice President of Global Sales since November 2017 and Vice President of Global Sales since May 2015. Prior to that, Dr. Xue held various managerial positions in our company since 2003, including the Vice President of Worldwide Manufacturing from 2008 to 2012 and General Manager of China Operation from May 2005 to December 2007. Prior to joining us, Dr. Xue served as the Director of Engineering in Dowslake microsystem from 2001 to 2003. Dr. Xue received his B.S. in Physics from Xiamen University, and Ph.D. in Physical Chemistry from University of Pennsylvania.