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TPS40210 波形怎么这么奇怪!

Other Parts Discussed in Thread: TPS40210

之前发过一个帖子打样了一个TPS40210的小板,后来调试没问题了,最近整合到一个大板子上面测试发现MOS管驱动变成了这样,

元件的布局走线基本跟上贴是一样的 ,上贴地址www.deyisupport.com/.../138258.aspx

改了阻容也还是这样,请教下大家是地线没走好吗?

以前的波形