The turn-on and turn-off of the IGBT high-power device is directly controlled by the IGBT control pole, and only when the IGBT input control signal IGBT will be normally switched on, but the control signal used to drive the IGBT turn-on belongs to the voltage type drive, and only a small control power is required to start the IGBT turn-on. Therefore, to make the IGBT conduction, it is necessary to control and input the control signal in his control.