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TPS562201尖峰电压问题

Other Parts Discussed in Thread: TPS562201

最近使用了tps562201做12V转5V的DCDC,但是纹波上有个尖峰电压,何解?

下图为尖峰放大波形

下图为BST脚波形

下图为原理图,12V上有一220uf电解电容