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UCC28780: 次级同步整流管电流异常

Part Number: UCC28780

专家您好:

       我的次级同步整流管的电流波形有一个实现了ZCS,一个没有实现,两个波形为一个周期,不知道是什么原因导致出现图2中次级同步整流管开通两次的情况。图3simplis仿真波形。同步整流管采用的是BSC098N10NS5,同步整流控制芯片采用的是MP6908A

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谢谢。