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请教个问题,比如DCDC BUCK型电源芯片LM27402,应用场景是12V转1V,Rfadj=4.53K,轻载2A情况下测试SW处开关频率为380K,然后增加负载到10A时,SW处开关频率有380K和150K左右的二个频率,这样的情况是否正常?麻烦各位电源大神解答下,多谢。



如标题