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TPS51285A: TPS51285A

Part Number: TPS51285A

现象:5V电源和3.3V电源输出后被迅速拉倒0V,疑似被保护;

问题:目前EN1和EN2信号同时给到了电源芯片,按照规格书要求,EN1需要先于EN2上电,同时给出这2个信号是否存在问题?

问题: 5V和3.3V正常起来后又被迅速拉低到0V,可能的原因是什么?