At present, China has gradually stepped into the era of new energy vehicles. To meet the demand for high output power, the power semiconductor device materials have been changed from silicon-based IGBT to silicon carbide MOSFET, the voltage platform has been upgraded from 400V to 800V, and the demand for power semiconductor devices carried has also increased significantly. The application scenarios of silicon carbide power devices in new energy vehicles include the main drive inverter, OBC (on-board charger), fast charging pile, and high-power DC/DC. The application of silicon carbide in 800V main motor controllers has become a general trend.