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tps65131完全无法正常工作

Other Parts Discussed in Thread: TPS65131

输入电压为2.6v左右时,输入电流已经达到了0.5a,在此情况下,Vref=-1.15v,FBN=-1.21V,FBP=0.268V,VNEG=-2.42V,VPOS=2.34,而OUTN的本应该是与地相接输出零电压,却是一个从-3v到2v的不断跳变的波形,引起整个电路板地电位不断跳板