UCC256301芯片WEBENCH® Power Designer设计,不能正常工作,
VCR引脚,在没有启动时(欠压)电压=3V,非欠压时的波形(下管驱动)如下图:
万用表测量VCR的电压高至7V,
注,器件参数按照WEBENCH设计文档取值
请问这是什么原因?
谢谢大家
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