This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

利用TPS54202 DC-DC芯片输入12V,输出5V电压;输出端出现20mV,1kHz的方波纹波。SW端对地出现占空比达到50%了,12v输入,负载只有200mA;为什么占空比为50%,输出端也有1kHz的方波纹波?求大神解答,谢谢!