输入：15VDC
输出：12VDC/1.5A
问题：VDS不时会出现如图所示的现象（电感会有异响），此类波形之间的间隔大概有几十mS；如果负载减轻，则此现象会消除；
架构：SEPIC 独立电感
CH3：VDS CH4：VGS
请问造成此类现象的问题是什么？
谢谢！
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