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TPS5430上电瞬间电压跌落

Other Parts Discussed in Thread: TPS5430

专家,您好!TPS5430在使用过程遇到了问题,请教一下,TSP5430的硬件电路设计请见附件。

问题:TPS5430的输入为24V,输出为5V,在上电瞬间测得TPS5430的输出电压由5V跌落到2V,测试波形请见附件,此时测得TPS5430的输出电流为510MA,请问这什么原因导致电压跌落的呢?

TPS5430的电路设计及测试波形.doc