GaN power device for automotive applications

Many power switching devices are used in a hybrid vehicle (HV) and an electric vehicle (EV) systems. For future development of the HV/EV, higher performances than that of Si power devices, for example, low on-resistance, high speed, high operation temperature, are strongly required. GaN power devices are promising candidate for the requirements. Power modules used in HV/EV system and present status of the GaN power device development are presented. Reliability of the GaN power device was also discussed.