电池/充电器负荷开关接近理想二极管

摘要： 两个电路进行了说明。第一次使用外部 Mosfet 驱动的李电池充电器集成电路 （MAX8814） 的权力确定 （博爱) 输出负载电池和充电不干预从微控制器或系统的软件源之间切换。ICs 充电器无博爱输出 （如 MAX1507），第二个电路会同一开关使用 Mosfet 和比较器 （MAX920）。

Maxim > Design support > App notes > Amplifier and Comparator Circuits > APP 4840
Maxim > Design support > App notes > Battery Management > APP 4840

Keywords: load switching, rechargeable battery-powered systems, Li+ battery chargers, power OK (POK) outputs

Feb 10, 2011
APPLICATION NOTE4840
Battery/Charger Load Switch Approximates Ideal Diode
By:Budge Ing
Hubert Bugajski

Abstract:Two circuits are described. The first uses external MOSFETs driven by the Power OK (POK) output of a Li-cell charger IC
(MAX8814), to switch a load between battery and charging source without intervention from a microcontroller or system software. For
charger ICs without a POK output (