Selector circuit for power management in multiple battery systems

一种在电子装置的一个直流电源和多个电池之间选择的选择器电路。该选择器电路响应一个来自相关电源管理单元的输出信号。该选择器电路还允许两个或两个以上电池的并联工作。该选择器还进一步检验电源状况并在某些情况下忽略PMU的任何指令来增强供电安全和延长电池使用寿命。本发明还提供了一种包括上述选择器电路的供电模块和一个包括该供电模块的电子装置。该选择器电路可以和一个充电电路集成于同一个集成电路上。 A selector circuit configured to select among a DC power source and a plurality of batteries for an electronic device. The selector circuit includes a first comparator configured to compare a first input signal representative of a voltage level of the DC power source with a first threshold level and provide a first output signal representative of a difference between the first input signal and the first threshold level, and a selector output circuit. The selector output circuit is configured to provide selector output signals that control selection among the DC power source and the plurality of batteries. The selector output circuit providing said selector output signals to select the DC source and deselect the plurality of batteries if the first output signal is representative of the voltage level of said DC power source being greater than the first threshold level.