SiC and Si Hybrid for EV Inverter Applications, from Powertrain to Inverter to Module and Discrete

SiC has been the rising star in vehicle electrification in the past years, meanwhile, the hybrid between SiC MOSFET and Si IGBT, benefiting from the cost and performance compromise, is also getting popular. In this presentation, we will discuss the latest trends and market forecasts of electrification, followed by a detailed review on SiC and Si hybrid approaches for EV inverters. For BEV inverters, the mix of SiC and Si can be implemented at various levels: a common practice is two motors driven individually by SiC and Si, as respectively primary and secondary motors; an innovative design is to have double inverters for one motor, each inverter with either SiC or Si; hybrid modules are recently gain attention to have both bare SiC and Si dies packaged in one module; an alternative solution is to have the mixture with discrete from SiC and Si. The flexibility of the hybrid approach can also be applied to PHEV and HEV powertrains.