Investigation on the Effect of Total Loss Reduction of HV Power Module by Using SiC-MOSFET Embedding SBD

A total loss reduction of 3.3 kV power module by using SiC-MOSFET embedding SBD has been demonstrated through the investigation of DC characteristics and switching characteristics. Despite 1.1 times larger on-resistance than that of conventional SiC-MOSFET due to larger cell pitch, superior switching characteristics of SiC-MOSFET embedding SBD, which are due to smaller total chip area than that of SiC-MOSFET coupled with external SBD and due to elimination of recovery charge by minority carrier injection compared with SiC-MOSFET utilizing its body diode, enable the total loss reduction especially for high frequency operation.