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LMR16030: 在进行传导GB18655测试总是会出现开关频率点噪声

Part Number: LMR16030

Dears

使用LM16030设计一个输入24V转12V,0.5A输出buck电路,参看推荐的设计文档。在进行传导GB18655测试总是会出现开关频率点噪声,超出7dB。

电路图和波形图如下

请问在开关频率处噪音,有什么好的解决方法?

谢谢。