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TPS5402使用问题

Other Parts Discussed in Thread: TPS54302, TPS562209

在使用TPS54302,在瞬间大电流输出的时候电压会出现上冲现象,电源输入12V,设计输出4.2V下图是功率电感前后的波形,黄色是输出,绿色是SW