标签: 负载共享

Batteriesoftenserveasthemainenergysourceforportableelectronicdevices.Althoughtheydependonbatteries,portableconsumerelectronicproducts,suchasGPSdevicesandmulti-mediaplayers,oftenconsumeenergydirectlyfromanac-dcwalladapteroraccessorypoweradapter(or“AutoAdapter”)whenthebatteryisloworthedeviceisinastationarymode.Duetotheircosteffectivenessovertheirusefullife,rechargeablebatteriesareoftenusedforthepowersourceoftheportableelectronicdevice.Attributessuchas“relativelyhighenergydensity”and“mainte-nancefree”makeLithium-Ion(Li-Ion)batteriespopularintheportableconsumerelectronicproducts.Refertotheapplicationnote,AN1088,"SelectingtheRightBat-terySystemForcostSensitivePortableApplicationsWhilemaintainingExcellentQuality"(DS01088)forcharacteristicsofLi-Ionbatteries.SomeexamplesofhowtoproperlydesignwithLi-Ionbatterieswillbediscussedinthisapplicationnote.Dependingontheproductdesignorlocalgovernmentregulations,rechargeablebatteriesareoftenchargedfrominsidethehandhelddevicesorfrombatterycharg-ingcradles.Duetothesafetyconcernsordesignconceptsincertainregions,somebatteriesarerequiredtoberemovedfromtheportabledevicepriorchargingactivitiesareinitiated.AN1149DesigningALi-IonBatteryChargerandLoadSharingSystemWithMicrochip’sStand-AloneLi-IonBatteryChargeManagementControllerAuthor:BrianChuHowever,mostofthetime,batteriesaredesignedtobeMicrochipTechnologyInc.rechargedwhilethedevicesarestillintheoperationalmode.Anendusercanextendtheruntimewhilerefill-ingtheenergybacktothebatteryforthenextmobileINTRODUCTIONaction.Thepowersourcenowhastosupplythedevic……