做一BUCK 输出纹波达到1V 用了 大电感电容 还用了共模电感 纹波还这么大,怎么解决啊
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如果是洞洞板做的,有纹波是正常的,开通过程比较大,可以在QL的DS两端加个RC吸收,估计会降低噪声。你可以试试,另外纹波的测试方法是有要求的,不是将地线夹夹在输出负直接测试就可以的。应该让地线与探头形成的环面积最小。