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TPS54425PWP电源输出问题

Other Parts Discussed in Thread: TPS54425

在我的板子中,单独一块板子TPS54425PWP产生的电压为5V正常,但是它的5V电压传输到其他板卡,则TPS54425PWP的VFB管脚的电压只有0.28V,芯片的输出只有1.65V。请问各位大神,这是神马情况啊?求解!谢谢!