STK621-717-E [Sanyo]

The STK621-041 and STK621-041A-E are thick-film hybrid ICs designed for three-phase motor driver applications, particularly air conditioner compressors. They integrate IGBT, FRD, pre-driver, and protection circuits into a single miniature SIP package. Key features include built-in thermal protection, overcurrent protection, and control supply under-voltage protection. The device allows CMOS-level input without insulating circuits and uses a bootstrap circuit for single power supply drive. It also includes a level shifter for direct connection from control circuits like microcontrollers.