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TPS65982BB: 雷电

Part Number: TPS65982BB
Other Parts Discussed in Thread: TPS65988DJ,

使用雷电设备JHL7440+TPS65988DJ+TPS65982BB,使用英特尔参考demo版“Thunderbolt - Titan-Ridge DD - Tapex Creek TI88”。现在遇到一个关于TPS65982BB问题,TPS65982BB的

PP_5V0_EN 引脚被拉高后,VBUS引脚无电源输出(PP_5V0已经供电),请问下什么原因导致。demo版的雷电接口是正常的。