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TPS5430: 输出纹波异常

Part Number: TPS5430

根据官方原理和布局做的5V3A电路,实测输出电容两端纹波异常,不是标准的三角波,为什么?(此前用过5420做的5V2A和5430做的12V1A都没问题)另外,这样的设计可以通过ClassB的EMI测试吗?

5V3A:

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