我按照数据手册pfm模式 3.3V连接电路，如图
可是输出电压却不正常，特别是 滤波电容哪里，不解滤波电容通过示波器能看到大约50hZ的波形，幅度在3.3V左右，但一旦接入滤波电容，不管是10uF还是104输出都只有零点几伏。求教问题大概出在哪里，怎么去排查
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