IPM is short for Intelligent Power Module, is an advanced power switching device. It has the advantages of GTR( Giant Transistor) high current density, low saturation voltage and high pressure resistance, MOSFET(field effect transistor) high input impedance, high switching frequency and low drive power. Moreover, IPM inside integrates logic, control, detection and protection circuits, which is convenient to use.It not only reduces the volume and development time of the system, but also greatly enhances the reliability of the system.Adapted to the development direction of today's power devices - modularity, compound and power integrated circuit (PIC), it has been more and more widely used in the field of power electronics.