11 / 18Induction Heater C Library User Manual Version 1.2MCU-AN-500087-E-125. Module Description5.1. Power ModuleThe 220V is connected by “ICN1” and “ICN2”. The 220V is rectified by “U4”, and supplied tothe pad. The “U11” is a 15V power module. It supply power to the MCU and IGBT driver.5.2. IGBT Driver ModuleThe “START” is the system enable signal. When it is high, the system is enabled, elsedisabled.The “PPG-IGBT” is the IGBT drive signal. When it is high, the IGBT is opened, else closed.The duty of the “PPG-IGBT” is to decide the pad heating power.