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关于TPS5430使用过程中发现的问题

Other Parts Discussed in Thread: TPS5430

各位,我在使用TPS5430实现+12V转换为-12V的过程中,使用了如下电路原理:

在实际测试中发现:TP1对TP2电压为+3.3V左右,而不是理论上的-12V。

请问,上述电路问题出现在哪里呢?