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如下图所示，LM3478MM在空载时会呈现锯齿波形状，而且在WEBENCH内设计的是100mA，但是带载40mA左右MOS管就开始啸叫，不知道是什么原因造成的，求大佬们指教一下。带载能力不够是不是由于输出端电容C6小了的原因？
