LNK403-409EG設(shè)計的帶TRIAC調(diào)光LED驅(qū)動技術(shù)

LNK403-409EG設(shè)計的帶TRIAC調(diào)光LED驅(qū)動技術(shù)本文首先介紹了LNK403-409EG主要特性，功能方框圖，以及TRIAC調(diào)光和無調(diào)光的LED驅(qū)動電路圖。接著介紹了采用LNK403-409EG的15WTRIAC調(diào)光單級PFCLED驅(qū)動器參考設(shè)計技術(shù)指標(biāo)，電路圖和材料清單與變壓器電路圖。LinkSwitch-PH系歹^LNK403-409EG是Powerint公司的集成了725V功率MOSFET，連續(xù)模式PWM控制器，用于自偏壓的高壓開關(guān)電流源，頻率抖動，逐個周期的電流限制和延遲熱關(guān)斷電路，主要用在離線LED驅(qū)動器。LNK403-409EG產(chǎn)品亮點(diǎn)：DramaticallySimplifiesOff-lineLEDDriversFlickerfreephase-controlledTRIACdimmingSinglestagepowerfactorcorrectedandaccurateconstantcurrentCCoutputEliminatesoptocouplerandallsecondarycurrentcontrolcircuitryEliminatesallcontrolloopcompensationcircuitrySimpleprimarysidePWMdimminginterfaceniversalinputvoltagerangeEnablesdesignsthatareelectrolyticfreeAccurateandConsistentPerformanceCompensatesfortransform?inductancetolerancesCompensatesforlineinputvoltagevariationsFreuencyitteringgreatlyreducesEMIfiltersizeandcostsAdvancedProtectionandSafetyFeaturesAutorestartforshort-circuitprotectionOpencircuitfaultdetectionmodeAutomaticthermalshutdownrestartwithhysteresisMeetshighvoltagecreepagereuirementbetweenDRAINandallothersignalpinsbothonPCBandatpackageEcoSmart?EnergyEfficientLowstandbypowerremoteONOFFfeature50mWat230VACNocurrentsenseresistorsmaximizesefficiencyHighefficiencyoperation5achievableGreenPackageHalogenfreeandROHScompliantpackageLNK403-409EG應(yīng)用：OfflineLEDdriver

G圖1。LNK403-409EG功能方框圖圖2。隔離TRIAC調(diào)光通用輸入14WLED驅(qū)動器電路圖圖3G圖1。LNK403-409EG功能方框圖圖2。隔離TRIAC調(diào)光通用輸入14WLED驅(qū)動器電路圖圖3。隔離不調(diào)光通用輸入7WLED驅(qū)動器電路圖o-KtliKC蚓月恥■周HFEMIKCRO-IEOCi*TRLz~[4-JTu麗小而areg'嚶整RL?VLM城林E采用LNK403-409EG的TRIAC調(diào)光單級PFCLED驅(qū)動器參考設(shè)計ThedocumentdescribesapowerfactorcorrectedLEDdriverdesignedtodriveanominalLEDstringvoltageof50Vat0.3Afromaninputvoltagerangeof90VACto265VAC.TheLEDdriverusestheLNK406EGfromtheLinkSwitch-PHfamilybyPowerIntegrations.LinkSwitch-PHICsallowtheimplementationofcosteffectiveandlowcomponentcountLEDdriverswhichmeetbothpowerfactorandharmonicslimits;andalsoofferanenhancedenduserexperience.Thisincludesultra-widedimmingrange(notusedinthisdemo),flickerfreeoperation(evenwithlowcostAClineTRIACdimmers)andfast,cleanturnon.Thetopologyusedisanisolatedflybackoperatingincontinuousconductionmode.Outputcurrentregulationissensedentirelyfromtheprimarysideeliminatingtheneedforsecondarysidefeedbackcomponents.NoexternalcurrentsensingisrequiredontheprimarysideeitherasthisisperformedinsidetheICfurtherreducingcomponentsandlosses.TheinternalcontrolleradjuststheMOSFETdutycycletomaintainasinusoidalinputcurrentandthereforehighpowerfactorandlowharmoniccurrents.TheLNK406EGalsoprovidesasophisticatedrangeofprotectionfeaturesincludingautorestartforopencontrolloopandoutputshort-circuitconditions.Lineovervoltageprovidesextendedlinefaultandsurgewithstand,outputovervoltageprotectsthesupplyshouldtheloadbedisconnectandaccuratehystereticthermalshutdownensuressafeaveragePCBtemperaturesunderallconditions.Thekeygoalsofthisdesignwerelowprofileandhighefficiency.ThiswastoallowthedriverboardtofitintothespacebehindtheLEDloadboardinsideaT8tubeandoperatewithanacceptabletemperaturerise.ThisnecessitatedcarefulselectionofcomponentsandmountingmethodsbutwassimplerthanalternatesolutionsduetothelowcomponentcountrequiredforaprimarysideregulatedLinkSwitch-PHdesign.ThisdocumentcontainstheLEDdriverspecification,schematic,PCBdiagram,billofmaterials,transformerdocumentationandtypicalperformancecharacteristics.圖4。LED驅(qū)動器參考設(shè)計外形圖LED驅(qū)動器參考設(shè)計主要特性：?Lowprofiledesign,<10mmcomponentheightAllowsdriverboardtositbehindLEDsgivinguniformilluminationinaT8replacementtubeapplication?SuperiorperformanceandenduserexperienceCleanmonotonicstart-upnooutputblinkingFaststart-up(<200ms)noperceptibledelay?Highlyenergyefficient86at115ACand8at230AC?Lowcost,lowcomponentcountandsmallprintedcircuitboardfootprintsolutionNocurrentsensingrequiredFrequencyjitterforsmaller,lowercostEMIfiltercomponents?IntegratedprotectionandreliabilityfeaturesOutputopencircuit/outputshort-circuitprotectionwithauto-recoveryLineinputovervoltageshutdownextendsvoltagewithstandduringlinefaultsAuto-recoveringthermalshutdownwithlargehysteresisprotectsbothcomponentsandprintedcircuitboardNodamageduringbrown-outorbrown-inconditions?MeetsIEC61000-3-2ClassCharmonicsandEN55015BconductedEMILED驅(qū)動器參考設(shè)計主要指標(biāo):

DescriptionSymbolMinTypMaxUnitsCommentInputVolkigeFrequ&nc/VjnRlNE9047115/23050昉口265G4VACHn2Wie-noFEOutputOutputVoltageOutputCurrentTotalOutputPowerCoritinuciusOutputP◎蟲erVolt?IttJTPour4E&00315芋VAWEfficiencyFullLoadn35%MeasuiiMl恥115/230VACEnvlrornneiitalConductedEMIRadiatedEMISafelyMSelFDesign$ClSPR15CCQassBedto肥eel1￡1聆E/eN54J日牌0EC<l5flfMiliCM5B15ULI9soPower-actor0.9MeasuredatVou-iFand115VAC/23OVACHarmonicsEN61D(XK3-2CTassCtodDDimensiorts260.44X19.53X13(10)mmDeignedtafitbeimndLEDlaadinT6w&e13mmheightiridM叩PCB型記loadpwtnjsinns.10iftiEmaxcomponeni:heigh.1abovePCSAmbientTemperasreTamq40七Freecwivedien,sen國喧IDOSpHEa~ii*n”HkiiZZnIDOSpHEa~ii*n”HkiiZZn：—B—圖5。15WLED驅(qū)動器參考設(shè)計電路圖

LED驅(qū)動器參考設(shè)計材料清單（BOM）：

ItemQtyR-afDeaDe-acripriionVeloe1ER1600V,1A.BridgeRectifier.GassPessivgledD6106S21Cl47nFr275VAC.fin1rX247nF31C210GriF,40aV,FfenItMJnF41C31jiF,4D0V,Elsciralytic.(6.3x11)1pF=1Cd100[=.25%Ee由lytk.S愣ESR,130mH,(6.3x11)IWpF&1C522jF.S0V,Elecirolytic.5露ESR.903m￡>,(5x11.5)22所72C6C11100nF,50V,Cer皿￡X7R,OflO5100rtFB1C71rflpF.SOV,Ceramic,X7R.12D61.0pF91c&2.2nF,Ceramic,Y12.2nF102C9C10100nF,63rEiedrcJy：ic.LewESR,255mfl(10K12.5)100pF111C121nF,1kV.Dc&cCwamic1nF122DtDS1000%1A.Reccifiej.DO-411N40D7nR□2051000Vh1A.FestRe網(wǎng)ery.500ns,gJiFR107141□3200V,1A.UhnafastRecovery,Mns.DO-41(AJR120151CM75V,0.15A,FastSwtciiing,DO-35Ul414aIS1□7500%14UKrafastRecovery,7SgDO-41LflJR16Q171Fl3.15A,250V,Stow3.15A131LI4mH.0.2A,TO,U10000,35tims4mH193L2L3L41000^4H.C.13A_3xIDnvn10MpH201二300pH,1AkTSPLI1DDDD,IQlunis3m州211QINPN.GOVIWQMA.SOTJSEMT491223R1R2R34.7k&5%,"4'N,CarixinRm4.7他231R42409,3%IMW.MetalFilm.1206240krt241R51.8MCL1%,V4W.MeMFifm,12061.S