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TPS5450使用问题,开关电源噪声抑制。

Other Parts Discussed in Thread: TPS5450

使用TPS5450,从明纬12V开关电源降压到5V,根据datasheet上参考电路和webench设计,现在输出是5.3V左右,没有问题,但纹波很大,主要是开关频率的噪声,约±100mV。另外,明纬电源的输出也出现了这个开关频率的噪声。这个应该如何处理啊。