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DRV8701: ERGRE

Part Number: DRV8701

原理图件上,VM输入40V,驱动800W的电机,在接上负载驱动电机时,芯片立马很烫、烧坏,为啥会直接烧掉芯片啊。EN引脚PWM控制与gpio控制时情况一样,直接烧掉芯片。求教