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DRV8301: VDS过流保护问题

Part Number: DRV8301


我是用的是STL76DN4LF7AG的NMOS,Rds=6 毫欧, VDS_LVL配置为0.2V, 应该保护的电流应该是33A,但是实际上在电机运行时6A左右就保护了,显示是VDS故障。

请问一下会是什么原因导致的