NXP SSL2101 12W调光LED驱动方案

NXPSSL210112W调光LED驱动方案关键词：电源管理,AC/DC转换器,LED驱动器,开关电源,SMPSNXP公司的SSL2101是开关电源(SMPS)控制器,可直接从火线整流电压工作,并集成了相位调光器.器件包括高压功率开关,以及允许直接从整流的火线电压工作的电路和给相位调光器供电的高压电路.主要用于高达15W的LED模块驱动.本文介绍了SSL2101主要特性,方框图,典型应用电路图以及12W调光LED驱动器电路,输入电压230VAC和120VAC所用的材料清单(BOM).TheSSL2101isaSwitchedModePowerSupply(SMPS)controllerICthatoperatesdirectlyfromrectifiedmainsandalsoincombinationwithaphasecutdimmer.ItisdesignedtodriveLEDdevices.Thedeviceincludesahigh-voltagepowerswitchandacircuittoallowstart-updirectlyfromtherectifiedmainsvoltage.Furthermorethedeviceincludeshigh-voltagecircuitrytosupplythephasecutdimmer.Fordimmableapplications,integrateddedicatedcircuitryoptimizesthedimmingcurve.SSL2101主要特性:Easymigrationtoexistinglightingcontrolinfrastructure,TRIACandtransistordimmersSupportsmajorityofavailabledimmingsolutionsValleyswitchingefficiencyisoptimizedbybuilt-indedicatedcircuitryBuilt-indemagnetizationdetectionTheIChasbuilt-inOverTemperatureProtection(OTP)Short-WindingProtection(SWP)andOverCurrentProtection(OCP)TheIChasinternalVCCgenerationthatallowsstart-upfromrectifiedmainsvoltageNaturaldimmingcurvebylogarithmiccorrectionSSL2101应用:TheSSL2101issuitablefordifferentpowerrequirements,theseinclude:SSL,retro-fitlamps,e.g.GU10,uptoamaximumof10WLEDmodules,separatepowersupplies,e.g.LEDspots,down-lights,uptoamaximumof15WLEDstrings,e.g.retaildisplay,uptoamaximumof15W图1.SSL2101方框图图2.SSL2101反激应用配置框图图3.SSL2101典型的反激应用电路图图4.SSL2101典型的反激应用和元件电路图SSL2101/210212W调光LED驱动器TheSSL2101/210212WLEDdriverisasolutionforaprofessionalapplicationwithmultiplehighpowerLEDsthatrequiresgalvanicisolationandasafeoutputvoltage.Itismainsdimmableforbothforwardphase(TRIAC)dimmers,andreversephase(Transistor)dimmers.Itcangenerateupto16Woutputpower,whichisequaltoa100Wincandescentlamp(at63Lumen/W).Examplesareshelflighting,downlighting,LEDlightingforbathroomsetc.Thedesigngivesanexampleofhowtomakeadrivethatissuitableforsmallformfactorapplicationslikeretrofitlamps.Theboardneedstobeconnectedtomainsvoltage.Touchingthereferenceboardduringoperationmustbeavoidedatalltimes.Anisolatedhousingisobligatorywhenusedinuncontrolled,nonlaboratoryenvironments.EventhoughthesecondarycircuitwithLEDconnectionhasagalvanicisolation,thisisolationisnotaccordingtoanyregulatednorm.Galvanicisolationofthemainsphaseusingavariabletransformerisalwaysrecommended.Theboardcanbeoptimizedfora230V(AC)(50Hz)orfora120V(AC)(60Hz)mainssource.Besidesthemainsvoltageoptimization,theboardisdesignedtoworkwithmultiplehighpowerLEDswithatotalworkingvoltageofbetween9Vand23V.TheoutputcurrentcanbelimitedusingtrimmerR20.Onrequest,adedicatedLEDloadcanbedeliveredthatistobeconnectedtoK3.ConnectorK2canbeusedtoattachotherLEDloads.Theoutputvoltageislimitedto25V.WhenattachingaLEDloadtoanoperationalboard(hotplugging)aninrushpeakcurrentwilloccurduetodischargeofcapacitorC6.Afterfrequentdischarges,theLEDsmaydeteriorateorbecomedamaged.图4.12W调光LED驱动器外形图AO-Electronics傲壹电子官网：中文网：驱动器电路图材料清单(BOM)(230VAC):材料清单(BOM)(120VAC):