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UCC28610: 反激变压器设计

Part Number: UCC28610
Other Parts Discussed in Thread: TL431,

按照手册提供的典型电路,设计, 但是一上电VGG 就短路,不知道如何去分析,母线输入电压310V 是正常,但是VGG 量测没有电压,然后后续测试到VGG 管脚对地短路。