Status and Trend of High Power IGBT Gate Drive Technology

High voltage and high current IGBT power modules are widely used in many fields. The gate drivers play important roles in ensuring safe, efficient and reliable operation of IGBT power modules. Based on the comparative analysis of existing products from domestic and foreign mainstream gate driver manufacturers, this paper analyzes and collates the main functions and different technical paths of IGBT gate drivers. By comparison, conventional analog drive method exists inherent defects, and digital drive method is the direction of future development. In this work, the system structure and main working principles of digital drivers are analyzed. Key technologies and development trends of the gate drivers are summarized, which lays the groundwork for further improving the efficiency, reliability and intelligence of IGBT power modules.