如何最大限度地减少功耗锂离子线性充电器

摘要：为最大限度地减少功耗线性电池充电器技术。从一个稳定的开关电源墙立方体，方法描述线性充电电路的功耗限制。提供电路，计算表明，为PMOS旁路晶体管的热下沉进行了讨论，并建议合适的导通晶体管。

Maxim>AppNotes>BATTERYMANAGEMENTPOWER-SUPPLYCIRCUITSKeywords:Lithiumionbattery,Li+,batterycharger,batterymanagement,DC/DC,DC-DCconverter,linearFeb21,2002charger,controllingpowerdissipationAPPLICATIONNOTE967HowtoMinimizePowerDissipationinLi+LinearChargersAbstract:Techniquesaredescribedforminimizingpowerdissipationinlinearbatterychargers.Beginningwithastablewall-cubeswitchingpowersource,methodsaredescribedtolimitthedissipationinthelinearchargingcircuit.Circuitsareprovided,calculationsareshown,heatsinkingforthePMOSpasstransistorisdiscussed,andsuitablepasstransistorsaresuggested.IntroductionDatasheetsforsingle-cellLi+linearchargersseldomdiscusspowerdissipationorhowtodeal