标签: switch-mode

Thedesignofswitchingconvertersasastandaloneblockisawell-knowntopic.However,veryspecificchallengesarisewhenaDC/DCconverterisusedtochargeabatterypack.Understandingtheimpactofusingabatteryasaload,andothercharger-relatedsystem-leveldetailsup-front,isarequirementwhendesigningaDC/DCconvertertargetedatbattery-packcharging.Up-frontconsiderationofthoseissueswillenablethedesignertoincorporatefeaturesandfunctionsduringthedesignphasethatarenotpresentincommonDC/DCconvertersbutthatshouldbeincludedinDC/DCconverterstargetedatbatterycharging.Thisarticlediscussesthemostcommonbenefitsandchallengesfacedwhenusingswitchingconvertertopologiestochargebatterypacks,includingspecificchallengesanddesigntradeoffsfacedwhenusingthebatterypackasaload.

Switch-ModePowerConverters-DesignandAnalysis

SwitchmodePowerSupplyHandbook1sted

Switch-ModePowerSupplySPICECookbook

Thiscircuitusespulse-frequency-modulation(PFM)togenerate+3.3Vfroma-5Vpowersupplywithoutneedforatransformer.Itisidealforapplicationsthathaveastable-5Vpowersupplyanddonotrequireisolation……

Abstract:ThisapplicationnoteexaminestheoperationandbenefitsofaClassD(switch-modeandfilterless)audioamplifier.Switch-modeamplifierssuchasthemonoMAX4295andstereofilterlessMAX9701offerhighqualityaudiowithimprovedefficiencywhencomparedtotraditionallinearaudioamplifiers(ClassA,ClassB,andClassAB).ThisapplicationnotepresentsanoverviewoftraditionallinearaudioamplifierdesignsandthencomparesthemwithClassDamplifierdesign.ThebenefitsofnewerClassGamplifiersareacknowledged.ThearticleshowsefficiencycalculationsandoutputfilterdesignforClassDamplifiers.ThehighefficiencyofClassDamplifiersisdemonstratedwiththeMAX9701.Maxim>AppNotes>AmplifierandComparatorCircuitsAudioCircuitsKeywords:audioamplifier,speakerdriver,BTL,bridge-tiedload,switchingaudio,ClassD,PWM,switch-mode,H-bridge,efficiencySep20,2010APPLICATIONNOTE1760High-EfficiencyClassDAudioAmplifiersExtendBatteryLifeinPortableApplicationsAbstract:ThisapplicationnoteexaminestheoperationandbenefitsofaClassD(switch-modeandfilterless)audioamplifier.Switch-modeamplifierssuchasthemonoMAX4295andstereofilterlessMAX9701offerhighqualityaudiowithimprovedefficiencywhencomparedtotraditionallinearaudioamplifiers(ClassA,ClassB,andClassAB).ThisapplicationnotepresentsanoverviewoftraditionallinearaudioamplifierdesignsandthencomparesthemwithClassDampli……

摘要：外部运放（MAX4322），使此开关升压转换器（MAX668）提供输出电流高达4A效率比90%。运算放大器使对地规管电路（而不是-5.2V电源电压输入），从而避免输入的变化的影响上-3.6v输出。Maxim>Designsupport>Appnotes>AmplifierandComparatorCircuits>APP4834Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP4834Keywords:negative-to-negativesupply,switch-modeconverter,switch-modeboostconverter,opampFeb02,2011APPLICATIONNOTE4834Negative-to-NegativeSwitch-ModeConverterOffersHighCurrentandHighEfficiencyBy:BudgeIngAbstract:Anexternalopamp(MAX4322)enablesthisswitch-modeboostconverter(MAX668)todeliveroutputcurrentsashighas4Awithefficienciesbetterthan90%.Theopampenablesthecircuittoregulatewithrespecttoground(insteadofthe-5.2Vsupply-voltageinput),therebyavoidingt……

摘要：本应用笔记探讨D类（开关模式和滤波器）音频放大器的运作和效益。如MAX4295单声道和立体声滤波器MAX9701与提高工作效率提供高品质的音频相比，传统的线性音频放大器（A类，B类，AB类）时，开关模式放大器。本应用笔记介绍了传统的线性音频放大器设计概述，然后比较他们与D类放大器设计。新的G类放大器的优点是公认的。文章显示效率的计算和D类放大器的输出滤波器的设计。D类放大器的高效率表现与MAX9701。Maxim>AppNotes>AmplifierandComparatorCircuitsAudioCircuitsKeywords:audioamplifier,speakerdriver,BTL,bridge-tiedload,switchingaudio,ClassD,PWM,switch-mode,H-bridge,efficiencySep20,2010APPLICATIONNOTE1760High-EfficiencyClassDAudioAmplifiersExtendBatteryLifeinPortableApplicationsAbstract:ThisapplicationnoteexaminestheoperationandbenefitsofaClassD(switch-modeandfilterless)audioamplifier.Switch-modeamplifierssuchasthemonoMAX4295andstereofilterlessMAX9701offerhighqualityaudiowithimprovedefficiencywhencomparedtotraditionallinearaudioamplifiers(ClassA,ClassB,andClassAB).ThisapplicationnotepresentsanoverviewoftraditionallinearaudioamplifierdesignsandthencomparesthemwithClassDampli……

摘要：有三种方法来充电锂离子电池开关模式，线性和脉冲。每种方法都有其优点和缺点。广泛的AC适配器电压开关模式充电，最大限度地减少功耗，但消耗更多的电路板空间，并增加了复杂性相比，线性和脉冲充电。线性充电器是小的和伟大的噪声敏感设备，但功耗高。脉冲充电器虽小，效率高，但需要一个电流限制的AC适配器。选择的成本，空间和效率的优先次序为基础的收费方法。Maxim>AppNotes>BATTERYMANAGEMENTKeywords:lithium-ionbattery,Li+,switchmode,switch-modecharging,inearcharging,pulsechargingDec27,2001APPLICATIONNOTE913Switch-Mode,Linear,andPulseChargingTechniquesforLi+BatteryinMobilePhonesandPDAsAbstract:TherearethreemethodstochargingLi+batteries:switch-mode,linearandpulse.Eachmethodhasitsadvantagesanddisadvantages.Switch-modechargingminimizespowerdissipationoverawiderangeofACadaptervoltages,butconsumemoreboardspaceandaddcomplexitycomparedtolinearandpulsecharging.Linearchargersaresmallandgreatfornoisesensitiveequipment,butpowerdissipationishigh.Pulsechargersaresmallandefficient,butrequireacurrent-limitedACadapter.Selectthechargingmethodb……

摘要：一个推动与MAX1771直流-直流控制器内置的直流-直流控制器使可用于电池充电的简单开关电流源。电压控制回路禁用当前控制循环提供了监管。Maxim>AppNotes>BatteryManagementPower-SupplyCircuitsKeywords:DC-DCconverter,switch-mode,currentsource,MAX1771,batterycharger,Ni-Cd,NiMH,NickelJul09,1998Cadmium,NickelMetalHydride,dcdccontroller,batterychargingAPPLICATIONNOTE113BoostDC-DCVoltageRegulatorConvertsToCurrentSourceforBatteryChargingAbstract:AboostDC-DCcontrollerbuiltwiththeMAX1771DC-DCcontrollermakesasimpleswitch-modecurrentsourcethatisusefulforbatterycharging.Thevoltagecontrolloopisdisabledsothatthecurrentcontrolloopprovidesregulation.TheswitchingregulatorofFigure1includesindependentloopsofcurrentandvoltagefeedbackformaintainingregulation.Bydisablingthevoltageloop,youcanusethecurrentlooptoimplementagener……

摘要：笔记本电脑越来越多地需要复杂的电池充电算法和系统。本文提供的信息和背景上的锂离子（Li+），镍镉（NiCd），镍金属氢化物（NiMH）电池及相关系统级开关模式和线性电池充电器。这些稳压器和电流调节器像8051或Microchip的PIC的外部微处理器控制，并与这些控制器提供的例子。一个常见的化学电池充电电池充电器IC采用Maxim概述的要求，一起讨论系统级的贸易利益和固件设计技巧，以及万维网工程的资源列表。Maxim>Designsupport>Appnotes>BatteryManagement>APP680Maxim>Designsupport>Appnotes>Power-SupplyCircuits>APP680Keywords:linear,switch-mode,batterycharger,microcontroller,currentsource,switchingdc-dcconverter,notebookcomputer,lithium-ion,Li+,lithium,8051,NiCd,NiMH,NickelMetalHydride,MicrochipPIC,voltageregulator,currentregulatorsJul22,2002APPLICATIONNOTE680HowtoDesignBatteryChargerApplicationsthatRequireExternalMicrocontrollersandRelatedSystem-LevelIssuesAbstract:Notebookcomputersincreasinglyrequirecomplexbatterychargingalgorithmsandsystems.Thisarticleprovidesinformationandbackgroun……

摘要：有三种方法来充电锂离子电池开关模式，线性和脉冲。每种方法都有其优点和缺点。广泛的AC适配器电压开关模式充电，最大限度地减少功耗，但消耗更多的电路板空间，并增加了复杂性相比，线性和脉冲充电。线性充电器是小的和伟大的噪声敏感设备，但功耗高。脉冲充电器虽小，效率高，但需要一个电流限制的AC适配器。选择的成本，空间和效率的优先次序为基础的收费方法。Maxim>AppNotes>BATTERYMANAGEMENTKeywords:lithium-ionbattery,Li+,switchmode,switch-modecharging,inearcharging,pulsechargingDec27,2001APPLICATIONNOTE913Switch-Mode,Linear,andPulseChargingTechniquesforLi+BatteryinMobilePhonesandPDAsAbstract:TherearethreemethodstochargingLi+batteries:switch-mode,linearandpulse.Eachmethodhasitsadvantagesanddisadvantages.Switch-modechargingminimizespowerdissipationoverawiderangeofACadaptervoltages,butconsumemoreboardspaceandaddcomplexitycomparedtolinearandpulsecharging.Linearchargersaresmallandgreatfornoisesensitiveequipment,butpowerdissipationishigh.Pulsechargersaresmallandefficient,butrequireacurrent-limitedACadapter.Selectthechargingmethodb……

摘要：这样的设计理念，展示了如何规范的LCD偏压发生器无需电感。基于MAX868稳压，反相电荷泵电荷泵的设计取代了开关模式设计，以产生一个负电压偏置的LCD。负，反相电荷泵的反馈路径中几个组件生产逆变器四倍频电路。Maxim>AppNotes>DisplayDriversKeywords:switch-modepowersupply,chargepump,regulatedchargepump,invertingchargepump,regulatednegativevoltage,inverterDec17,2001quadrupler,personaldigitalassistant,PDAAPPLICATIONNOTE239RegulatedLCD-BiasGeneratorRequiresNoInductorAbstract:ThisdesignideashowshowaregulatedLCDbiasgeneratorrequiresnoinductor.Acharge-pumpdesignbasedontheMAX868regulated,invertingchargepumpreplacesaswitch-modedesigntogenerateanegativevoltageforbiasinganLCD.Afewcomponentsinthefeedbackpathofanegative,invertingchargepumpproduceaninverter-quadruplercircuit.AsimilarideaappearedintheMarch9,1998issueofElectronicDesign.Astringentheightlimitationon……

EMIandlayoutforswitch-modecircuitsvsg(t)DTsTstEEcoreinsulationsecondaryprimaryVppprimaryreturnVgVpp=n-1+Vn2iCM(t)Supplementarynotesonsecondaryreturnn:1CwEMIandLayoutFundamentalsforSwitched-ModeCircuitstCwR.W.EricksonsignalLMiCM1:1LMiDMiCM……