电感电流震荡如何处理?谢谢

各位老师大家好;
   小可有个问题向各位咨询.
    一个100K的Buck变换器,电感电流上升和下降的边界处发生震荡,并且很严重,在下不知如何处理,请教各位!
    希望各位不吝赐教!万分感谢!
    波形见附件!
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放大后
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