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LM5069 增加dv/dt mos烧毁



dv/dt电路,负载为纯电容

负载测试正常,但负载电机或恒流负载基本就是上电Q5就直接击穿,原理图如下: 测试空载时Q5G极波形,弥勒平台4.5V持续120ms,时间太长,见下图1通道波形

请教一下,我要增加dv/dt怎么解决恒流或电机负载时这种故障