This article reviews and discusses the trends of motor drives and on-board chargers (OBC) in electric traction inverter and power converter systems, which are based on US Drive and EU 2ZERO technical goals, and analyzes international vehicle charging standards, voltage, power, power density, efficiency, and current status for analysis. According to the trend of motor drivers and on-board chargers, the Intelligent Mobility Technology Division of ITRI is actively developing high-efficiency and high power density motor drivers and bidirectional onboard chargers to solve the current problem of low battery life of electric vehicles and space constrained issues. By introducing international benchmark products for analysis and reference, it is expected to exceed the power density target of US Drive in 2025, and then lay out the development of power traction inverter and power converter systems after 2025.