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TPS54620: tps54620纹波压制

Part Number: TPS54620


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上图的电源tps54620给一个负载供电,最大电流5.4A左右,由于负载电流变化快,大概有1-2A的变化,导致用直流观察输出时电压有一个4KHz左右的波动,交流纹波有90mV左右,频率也时4KHz左右,能否根据现有的图纸进行优化,调整到纹波只有40mV左右?