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哪位大神可以帮忙分析一下,UCC2800交流输入220V 发现芯片VDD的管脚的电压为72V,所以导致芯片烧坏。

Other Parts Discussed in Thread: UCC28700

 原理图如下图所示,发现UCC28700管脚的电压为72V远大于工作的最大的电压35v 哪位大神可以帮忙分析一下