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Hi
这里有一片DC/DC后增加PI型滤波器或者LDO降低纹波的文章,你可以参考:
http://www.ti.com/general/docs/lit/getliterature.tsp?baseLiteratureNumber=slva549&fileType=pdf
Hi
这篇文章里有一些示波器纹波的波形,你也可以参考的,包括时间设置之类。