↑↑↑ 当前原理图
↑↑↑ 当前Layout
↑↑↑ 有参照WEBENCH® POWER DESIGNER 值修改过,未有改善
↑↑↑ 未接负载
↑↑↑ 接上LDO(BD3570)低负载,未测负载电流
↑↑↑ LDO 另接150mA负载后
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您好
您除了用webench对照原理图的参数选型,也可以看一下layout,尤其是地线。
下方两个帖子也提供了一些纹波方面的解决方法。