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TPS65100输出电压有偏差。

Other Parts Discussed in Thread: TPS65100

想请问一下,我按照TPS65100 datasheet上的电路图(figure 23. 其中pin2&pin3悬空的)layout的PCB,发现3路输出电压都有偏差.

Vout1偏高0.3V, Vout2偏高0.08V,  Vout3偏高0.2V,    当我把C2去掉断开,Vout1,Vout2的偏差不变化,Vout3的偏差变为0.45V.

想知道为什么啊?pin2&pin3悬空是否有影响,如何才能正确的输出?谢谢!