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TPS63020 输出纹波噪声很大毛刺

原理图,PCB是推荐的原理图和PCB,测量电压输出有2.5MHz左右的毛刺输出,和DCDC切换频率一致,有没有改善的办法?(示波器带宽限制未打开,已确认不是探头耦合进来的信号)