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TPS2121:7V与9V双电源切换出现电压跌落造成设备重启

Part Number: TPS2121

我们设计了一个电池供电7V(IN1)与无线充电源9V(IN2)的切换电路,在IN1(7V)供电的情况下,接入IN2(9V),Vout输出电压会从7V上升至9V,负载无异常情况,但是当IN2(9V)断开的情况下,Vout电压会9V跌落至5.8V后再升至7V,由IN1(7V)供电,负载设备会重启,我们试过在Vout输出端加大电容至470uF,仍会出现电压跌落导致设备重启的情况,请问应该如何解决,我们采用的是CP2输入高电平以达到快速切换模式。以下是设计的原理图,我们想要达到当IN2(9V)断开时,Vout输出电压能快速切换至IN1(7V)供电而不会造成设备重启,应该如何改进