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TPS61220: 使用TPS61220出现输入电压被拉低的情况,电路设计是经典电路

Part Number: TPS61220

使用TPS61220这颗芯片出现异样情况,一上电就拉低vin输入电压(热电片供电)从0.7V瞬间拉低到0.5v,升压电路设计是用经典的设计电路,参数一致。