High-power SiC power module driving circuit

The invention belongs to the technical field of motor controllers, and discloses a high-power SiC power module driving circuit. A double-end isolation driving power supply is adopted, so that misconduction caused by crosstalk can be effectively suppressed by negative-voltage switching-off, and good reliability and electromagnetic interference resistance are achieved; and meanwhile, a bus voltage sampling circuit and a phase current sampling circuit are integrated, so that the power hardware structure of the electric driving system is greatly simplified, and the integrated and efficient design of an electric propulsion driving motor controller is very friendly. The SiC power device drive circuit is composed of a drive pre-stage circuit, a double-end isolation drive power supply circuit, an isolation sampling circuit and a drive and protection circuit. 本发明属于电机控制器技术领域，公开了一种大功率SiC功率模块驱动电路。采用双端隔离驱动电源，负压关短可有效抑制串扰引起的误导通，具有良好的可靠性和抗电磁干扰性；同时集成母线电压采样及相电流采样电路，极大的简化了电驱动系统功率硬件结构，对电推进驱动电机控制器集成化、高效化设计十分友好。SiC功率器件驱动电路由驱动前级电路、