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电路没有接电池，vbus接到5V直流电源，
用万用表表测sys端电压，电压不停波动，大约2v~4.2v
然后我测量了sw端的频率发现频率时有时无这是什么原因呢？拜托了~~
您参考数据手册9.2.3 Application Performance Plots参考SW的波形
h好像不大一样，这是我SW端的波形这是sys端的波形麻烦您再给看看是什么毛病
拜托了哪位能帮我一下，
