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>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4840Maxim>Designsupport>Appnotes>BatteryManagement>APP4840Keywords:loadswitching,rechargeablebattery-poweredsystems,Li+batterychargers,powerOK(POK)outputsFeb10,2011APPLICATIONNOTE4840Battery/ChargerLoadSwitchApproximatesIdealDiodeBy:BudgeIngHubertBugajskiAbstract:Twocircuitsaredescribed.ThefirstusesexternalMOSFETsdrivenbythePowerOK(POK)outputofaLi-cellchargerIC(MAX8814),toswitchaloadbetweenbatteryandchargingsourcewithoutinterventionfromamicrocontrollerorsystemsoftware.ForchargerICswithoutaPOKoutput(