Wonsuk Choi
About Wonsuk Choi
Wonsuk Choi is an Application Manager at ON Semiconductor, with extensive experience in application engineering and power electronics. He has worked in various roles at Fairchild and ON Semiconductor, specializing in power devices and Switched Mode Power Supplies.
Work at Onsemi
Wonsuk Choi currently serves as an Application Manager at ON Semiconductor, a position he has held since 2020. His role involves overseeing application management and providing technical support for various power devices. Prior to this, he worked as a Senior Principal Application Engineer at ON Semiconductor from 2016 to 2018. His experience at ON Semiconductor has allowed him to leverage his expertise in power electronics and contribute to the development of advanced semiconductor solutions.
Previous Experience at Fairchild
Wonsuk Choi has extensive experience at Fairchild, where he held multiple roles over several years. He began as a Senior Application Engineer from 2006 to 2013, followed by positions as a Principal Application Engineer from 2013 to 2015, and as an Application Engineering Manager for eight months in 2016. Additionally, he worked as an Intermediate Application Engineer for one year from 2004 to 2005. His tenure at Fairchild focused on application engineering and the development of power semiconductor technologies.
Education and Expertise
Wonsuk Choi holds a Master of Science degree in Power Electronics from Hanyang University, which he completed from 2003 to 2005. His educational background has equipped him with a strong foundation in power electronics, enabling him to specialize in designing and troubleshooting Switched Mode Power Supplies (SMPS). He has published several application notes, papers, and technical articles in the field of power discrete semiconductors.
Specialization in Power Devices
Wonsuk Choi specializes in various power devices, including super junction MOSFETs, shielded gate trench MOSFETs, SiC/GaN devices, and FS IGBTs. He has significant experience with IGBT applications, particularly in induction heating and PDP drivers. His work also extends to WBG device applications, including boost PFC and industrial applications, as well as MV trench gate MOSFET applications for synchronous rectifications.
Experience with High Voltage Applications
Wonsuk Choi has extensive experience in high voltage (HV) applications, particularly with HV voltage power MOSFETs. His work encompasses telecom and server power solutions, laptop adapters, flat panel display power, and ATX power supplies. Additionally, he has experience with high voltage integrated circuit (HVIC) applications, further demonstrating his expertise in the power electronics sector.