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TPS3808: TPS3808G33QDBVRQ1电路设计调试问题

Part Number: TPS3808


 想通过TPS3808G33监控BUCK芯片输出的3.3V过压或欠压,有异常后通过EN脚RESET关掉BUCK芯片3.3V输出,但是目前EN脚无法拉低,无法关断输出。是什么原因及解决办法?

以下是经过仿真和实际验证都无法将EN拉低,所以暂时无法实现Buck的过压和欠压,请问还有没有其他办法。