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TPS61220DCKR这颗电源芯片EN使能脚与地连接还是有电压输出,VIN=3.8v Vout=3.25V



TPS61220DCKR这颗电源芯片EN使能脚与地连接还是有电压输出,输入电压3.8V输出电压还有3.25V,我用的功率电感是普通绕线功率电感4.7UH。

就是给TPS61220DCKR单独供电,输出没有接任何负载做的实验也是一样的结果。使能脚拉低到地,还是有输出电压3.25V。请问是不是跟这颗功率电感有关系,参考设计用的是屏蔽室功率电感。