AM3358供电现在遇到一个问题:如原理图,其中VDDSHV6测试电压为4.6V,正常值应为3.3V ; 但是把FB6断开,后测试VMMC-3V3又正常是3.3V.。但是VDDSHV6仍有4.6V电压。请教,这个电压怎么来的呢?所有与VDDSHV6相关的电路如下图。现已把相关联除电容没有断开外,其他都断开后,仍然有4.6V。


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