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使用UCC27211等驱动芯片时,PWM控制信号接地、驱动芯片接地和主电路接地,相互需要隔离开吗?

Other Parts Discussed in Thread: UCC27211

如题,然后是ucc27211按照说明搭建的电路,为什么非常容易烧喃?没有接mos管时,用电压表测试输出端电压时,不知道为什么就突然发热,不测时又恢复。