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led路灯电源

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2018-11-19 0人阅读 举报 0 0 暂无简介

简介:本文档为《led路灯电源pdf》,可适用于工程科技领域

PowerIntegrationsHellyerAvenue,SanJose,CAUSATel:Fax:wwwpowerintcomDesignExampleReportTitleWPowerFactorCorrectedLLCPowerSupplyUsingHiperPLC(PLCPG)Specification–VACInputW(VatA–A)OutputApplicationLEDStreetLightAuthorApplicationsEngineeringDepartmentDocumentNumberDERDateJune,RevisionSummaryandFeatures•IntegratedPFCandLLCcontroller•ContinuousmodePFCusingsmalllowcostferritecoreandmagnetwire•FrequencyandPhaselockedPFCandLLCforripplecancellationinbulkcapacitorforreducedripplecurrent,reducedbulkcapacitorsizeandreducedEMIfiltercost•TightLLCdutycyclematching•TightLLCdeadtimecontrol•>fullloadPFCefficiencyatVACusingconventionalultrafastrectifier•>fullloadLLCefficiency•>fullloadsystemefficiencyPATENTINFORMATIONTheproductsandapplicationsillustratedherein(includingtransformerconstructionandcircuitsexternaltotheproducts)maybecoveredbyoneormoreUSandforeignpatents,orpotentiallybypendingUSandforeignpatentapplicationsassignedtoPowerIntegrationsAcompletelistofPowerIntegrations'patentsmaybefoundatwwwpowerinripplecurrentfactorActualKrptendstoincreaseathighercurrentwhenusingironpowderSendustcores,duetodropininductanceathighercurrentDiodebridgeVfVForwardvoltagedropofdiodebridgeRdsonohmsPFCMOSFETRdsonusehightempvaluefromdatasheetCosspFPFCMOSFEThighvoltageCossfromdatasheettONnsMOSFETturnoncurrentrisetimeCheckactualvalueQrrnCAverageQrrofboostdiodeoverACsinusoidPFCCHOKEParametersLpfcuHPFCchokeinductanceILpkAPFCchokepeakcurrentatVACMINALnHt^nHperturn^(frommagneticsdatasheet)NoteThisvaluedecreasesbyasmuchasifabellybandisaddedtoreduceEMInturnsPFCchokenumberofturnsMLTcmMeanlengthperturnAWGChokePFCchokewiregaugeEquivalentChokeMetricWiregaugemmEquivalentdiameterofwireinmetricunitsWirelengthmLengthofwireusedonPFCchokeStrandsNumberofwiresDCRmohmsDCresistanceofwireatCDCRatCmohmsDCresistanceofwireatCIrmsCHOKEAPFCchokermscurrentDCRCulossWPFCchokeDCCopperlossforreferenceatCACRPFCChokemohmsMeasureorcalculateaddtomeasuredvaluetogetCvalueHFIrmsARMScurrentofswitchingcomponentHFCulossWCopperlossduetoswitchingcomponentatCtotCulossWTotalcopperlossatCLMcmMagneticpathlengthofcoreusedHpkOePeakMMFinOersteds,calculatedatlowlineHpkSIAmPeakMMFinAm,calculatedatlowlinePFCFET,DiodeandOutputParametersIsenseRohmsMaximumvalueofPFCcurrentsenseresistorSenseresistorpowerdissipationWPFCsenseresistorpowerdissipationatVacminIrmsFETAPFCMOSFETRMScurrentmeasuredatVACMINConductionlossWPFCMOSFETconductionlossDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomTrrlossWPFCMOSFETlossduetodiodeTrrCosslossWMOSFETCosslossCrossoverlossWMOSFETcrossoverturnonlossTotalPFClossWMOSPFCFETtotallossDiodebridgePlossWDiodebridgeestimatedlossPFCDiodeRMScurrentAApproximatePFCDiodeRMScurrentatnominalACinputvoltage(VACMIN)(includesHzcomponent)BulkcapacitorRMScurrentAApproximateBulkCapacitorRMScurrentatnominalACinputvoltage(VACMIN)(includesHzcomponentandLLCinputcurrent)LLCTRANSFORMERCALCULATIONSPoWOutputfromLLCconverterincludingdiodelossVoVOutputattransformerwindings(includesdiodedrop)Aecm^TransformercorecrosssectionalareaLparuHParallelinductance(Lpar=LopenLserforintegratedtransformerLpar=Lmagfornonintegratedtransformer)LseruHLeakageinductanceofintegratedtransformerLeakageexternalinductorfornonintegratedtransformerLopenuHPrimaryopencircuitinductanceforintegratedtransformerCnFSeriesresonantcapacitorfnominaldesiredkHzDesiredfullloadswitchingfrequencyRecommendedvaluekHztokHzfnominalactualkHzExpectedfrequencyatnominalinputvoltage(VBULK)andfullloadIRMSLLCPrimaryAPrimarywindingRMScurrentatfullloadandnominalinputvoltage(VBULK)IRMSLLCQARMScurrentthroughupperMOSFETinLLChalfbridgeVMINVMinimumVoltageonBulkCapacitoratminimumswitchingfrequencyfATVMINkHzFrequencyatminimumBulkcapacitorvoltagefparkHzParallelresonantfrequency(definedbyLparLserandC)fserkHzSeriesresonantfrequency(definedbyseriesinductanceLserandC)fminkHzMinfrequency,atVBULKMINandfullloadSetPLCminimumfrequencytothisvalueOperationbelowthisfrequencyresultsinlossofZVSNPPrimarywindingnumberofturnsNSSecondarywindingnumberofturnsnRATIOTransformerturnsratioAdjustthisvaluesothatfnominalactualisclosetofnominaldesiredBpkfminGaussFirstQuadrantpeakfluxexcursionatminimumfrequencyBACGaussACpeaktopeakfluxdensity(calculatedatfnominalactual,VBULKatfullload)LLCsenseresistorohmsLLCcurrentsenseresistorPdissLLCsenseRWPowerdissipationinLLCsenseresistorPRIMARYPrimarygaugeAWGIndividualwirestrandgaugeusedforprimarywindingEquivalentPrimaryMetricWiregaugemmEquivalentdiameterofwireinmetricunitsJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomPrimarylitzstrandsNumberofstrandsusedinLitzwirefornonlitznonintegratedtransformersettoPrimaryparallelwiresNumberofparallelindividualwirestomakeupLitzwireResistivityCPrimarymohmmResistivityinmilliohmspermeterTransformerprimaryMLTcmMeanlengthperturnPrimaryturnsNumberofprimaryturnsPrimaryDCRCmohmEstimatedresistanceatCPrimaryDCRCmohmEstimatedresistanceatC(approximatelyhigherthanatC)PrimaryRMScurrentAMeasuredRMScurrentthroughtheprimarywindingACRTrfPrimarymohmMeasuredACresistance(atkHz,roomtemperature),multiplybytoapproximateCwindingtemperaturePrimarycopperlossWTotalprimarywindingcopperlossatCSeparateSeriesInductor(Fornonintegratedtransformeronly)IgnorethissectionifusingintegratedmagneticsLsepuHDesiredinductancefromseparateinductorAeIndcm^InductorcorecrosssectionalareaInductorturnsNumberofprimaryturnsBPfnomGaussACfluxforcorelosscalculations(atfnomandfullload)BPfminGaussPeakfluxdensity,calculatedatminimumfrequencyfminInductorgaugeAWGIndividualwirestrandgaugeusedforprimarywindingEquivalentInductorMetricWiregaugemmEquivalentdiameterofwireinmetricunitsInductorlitzstrandsNumberofstrandsusedinLitzwireInductorparallelwiresNumberofparallelindividualwirestomakeupLitzwireResistivityCSepIndmohmmResistivityinmilliohmspermeterInductorMLTcmMeanlengthperturnInductorDCRCmohmEstimatedresistanceatC(forreference)InductorDCRCmohmEstimatedresistanceatC(approximatelyhigherthanatC)ACRSepInductormohmMeasuredACresistance(atkHz,roomtemperature),multiplybytoapproximateCwindingtemperatureInductorcopperlossWTotalprimarywindingcopperlossatCWinding(Vo)NotePowerlosscalculationsareforeachwindinghalfofsecondarySecWiregaugeAWGIndividualwirestrandgaugeusedforsecondarywindingEquivalentsecondaryMetricWiregaugemmEquivalentdiameterofwireinmetricunitsSeclitzstrandsNumberofstrandsusedinLitzwirefornonlitznonintegratedtransformersettoParallelwiressecNumberofparallelindividualwirestomakeupLitzwireResistivityCsecmohmmResistivityinmilliohmspermeterTransformerSecondaryMLTcmMeanlengthperturnSecTurnsSecondarywindingturns(eachhalf)DCRCSecmohmEstimatedresistanceatC(forreference)DCRCSecmohmEstimatedresistanceatC(approximatelyhigherthanatC)SecRMScurrentARMScurrentthroughOutputwinding,DER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomassuminghalfsinusoidalwaveshapeDCRPlossSecWEstimatedPowerlossduetoDCresistance(bothsecondaryhalves)ACRSecmohmMeasuredACresistance(atkHz,roomtemperature),multiplybytoapproximateCwindingtemperatureDefaultvalueofACRistwicetheDCRvalueatCACRPlossSecWEstimatedACcopperloss(bothsecondaryhalves)TotalsecondarywindingCopperLossesWTotal(ACDC)windingcopperlossforbothsecondaryhalvesWinding(Vo)NotePowerlosscalculationsareforeachwindinghalfofsecondarySecWiregaugeAWGIndividualwirestrandgaugeusedforsecondarywindingEquivalentsecondaryMetricWiregaugemmEquivalentdiameterofwireinmetricunitsSeclitzstrandsNumberofstrandsusedinLitzwirefornonlitznonintegratedtransformersettoParallelwiressecNumberofparallelindividualwirestomakeupLitzwireResistivityCsecmohmmResistivityinmilliohmspermeterTransformerSecondaryMLTcmMeanlengthperturnSecTurnsSecondarywindingturns(eachhalf)DCRCSecmohmEstimatedresistanceatC(forreference)DCRCSecmohmEstimatedresistanceatCforhalfsecondary(approximatelyhigherthanatC)SecRMScurrentArmsRMScurrentthroughOutputwindingOutputwindingisACstackedontopofOutputwindingDCRPlossSecWEstimatedPowerlossduetoDCresistance(bothsecondaryhalves)ACRSecmohmActualmeasuredACresistance(atkHz,roomtemperature),multiplybytoapproximateCwindingtemperatureDefaultvalueofACRistwicetheDCRvalueatCACRPlossSecWEstimatedACcopperloss(bothsecondaryhalves)TotalsecondarywindingCopperLossesWTotal(ACDC)windingcopperlossforbothsecondaryhalvesTotalCopperlosscalculationDoesnotincludefringingfluxlossfromgapPrimarycopperloss(fromPrimarysection)WTotalprimarywindingcopperlossatCSecondarycopperLossWTotalcopperlossinsecondarywindingTransformercopperlossWTotalcopperlossintransformer(primarysecondary)TURNSCALCULATORThisistohelpyouchoosethesecondaryturnsnotconnectedtoanyotherpartofspreadsheetVVTargetOutputVoltageVoVdVDiodedropvoltageforVoNTotalnumberofturnsforVoVVExpectedoutputVVdVDiodedropvoltageforVoNTotalnumberofturnsforVoJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomComparedtotheabovespreadsheet,actualoperatingfrequencyisconsiderablyhigherthantheexpectedoperatingfrequencyofkHzshownThisisduetotheeffectiveturnsratioofthetransformer,whichresultsinanoperatingturnsratiolowerthantheratioofprimaryturnstosecondaryturns(NPNS)ThegraphsshownbelowweregeneratedbyadjustingtheturnsratiointhespreadsheetuntiltheexpectedoperatingfrequencyshowninthespreadsheetwasidenticaltotheactualoperatingfrequencyoftheunitundertestVBULKvsSwitchingFrequencySwitchingFrequency(kHz)VBULK(V)FullloadMinloadFullLoadPrimaryandMOSFETRMSCurrentsSwitchingFrequency(kHz)IRMS(A)PrimaryMOSFETDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomPerformanceDataAllmeasurementsweretakenatroomtemperatureandHzinputfrequencyunlessotherwisespecified,OutputvoltagemeasurementsweretakenattheoutputconnectorsLLCStageEfficiencyTomakethismeasurement,theLLCstagewaspoweredseparatelybyconnectinganexternalVDCsupplyacrossbulkcapacitorC,andaVsourcewasappliedbetweenthecollectorofregulatortransistorQandcontrollergroundLLCEfficiencyvsOutputPower,VDCInputOutputPower(W)Efficiency()Figure–LLCStageEfficiencyvsLoad,VDCInputJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomTotalEfficiencyFiguresbelowshowthetotalsupplyefficiency(PFCandLLCstages)ACinputwassuppliedusingaHzsinewavesourceTotalEfficiencyvsInputVoltageACInputVoltageEfficiency()LoadLoadLoadLoadFigure–TotalEfficiencyvsOutputPowerDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomTHDandPowerFactorTHDandPowerfactormeasurementsweremadeusingaHzsinewaveACsourceTHDvsInputVoltageACInputVoltageTHD()LoadFullLoadFigure–InputCurrentTHDvsInputVoltage,andLoadPowerFactorvsInputVoltageACInputVoltagePowerFactorFullLoadLoadFigure–PowerFactorvsInputVoltage,andLoadJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomOutputRegulationThePFCregulatestheLLCandstandbysupplyinputvoltageundernormalconditionssotheoutputswillnotbeaffectedbytheACinputvoltageVariationsduetotemperatureandcomponenttolerancesarenotrepresentedTheVoutputvariesbylessthanoveraloadrangeoftoloadDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomWaveformsAllwaveformsaremeasuredatroomtemperatureusingaHzsinewavesupplyunlessotherwiseindicatedInputVoltageandCurrentFigure–VAC,WLoadTopTrace:InputCurrent,AdivBottomtrace:InputVoltage,V,msdivFigure–VAC,WLoadTopTrace:InputCurrent,AdivBottomtrace:InputVoltage,V,msdivLLCPrimaryVoltageandCurrentTheLLCstagecurrentwasmeasuredbycuttingthePCboardtraceinserieswiththeTprimaryandaddingacurrentsensingloopthatmeasurestheLLCtransformer(T)primarycurrentTheprimaryvoltagewaveformwasmeasuredatthehotsideofferritebeadLFigure–LLCStagePrimaryVoltageandCurrentTopTrace:Current,AdivBottomTrace:Voltage,V,µsdivJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomPFCSwitchVoltageandCurrentNormalOperationFigure–VACInput,LoadTopTrace:QDrainCurrent,Adiv,µsdivBottomTrace:DrainVoltage,V,µsdivFigure–VACInput,LoadTopTrace:QDrainCurrent,Adiv,µsdivBottomTrace:DrainVoltage,V,µsdivACInputCurrentandPFCOutputVoltageDuringStartupFigure–FullLoad,VACTopTrace:ACInputCurrent,AdivBottomTrace:PFCVoltage,V,msdivFigure–FullLoad,VACTopTrace:ACInputCurrent,AdivBottomTrace:PFCVoltage,V,msdivDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomLLCStartupFigure–LLCStartupVAC,LoadTopTrace:LLCPrimaryCurrent,AdivBottomTrace:OutputVoltage,V,msdivJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomLLCOutputShortCircuitThefigurebelowshowstheeffectofanoutputshortcircuitontheLLCprimarycurrentAmercurydisplacementrelaywasusedtoshorttheoutputtogetafast,bouncefreeconnectionFigure–OutputShortCircuitTest,VACTopTrace:LLCPrimaryCurrent,AdivBottomTrace:VOutput,V,µsdivDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomOutputVoltageDuringStartupFigure–VOutputatStartupVACInput,FullLoadV,msdivFigure–VOutputatStartupVACInput,FullLoadV,msdivJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomOutputRippleMeasurementsRippleMeasurementTechniqueForDCoutputripplemeasurements,useamodifiedoscilloscopetestprobetoreducespurioussignalsDetailsoftheprobemodificationareprovidedinfiguresbelowTietwocapacitorsinparallelacrosstheprobetipoftheBAprobeadapterUseaµFVceramiccapacitorandµFValuminumelectrolyticcapacitorThealuminumelectrolyticcapacitorispolarized,soalwaysmaintainproperpolarityacrossDCoutputsFigure–OscilloscopeProbePreparedforRippleMeasurement(EndCapandGroundLeadRemoved)Figure–OscilloscopeProbewithProbeMasterBABNCAdapter(ModifiedwithWiresforProbeGroundforRipplemeasurementandTwoParallelDecouplingCapacitorsAdded)ProbeGroundProbeTipDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomFullLoadOutputRippleResultsFigure–VOutputRipple,mV,msdivFigure–VOutputRipple,mV,µsdivJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomOutputLoadStepResponseThefiguresbelowshowtransientresponsewithaloadstepfortheVoutputTheoscilloscopewastriggeredusingtherisingedgeoftheloadstep,andaveragingwasusedtocanceloutripplecomponentsasynchronoustotheloadstepinordertobetterascertaintheloadstepresponseFigure–OutputTransientResponseA–A–ALoadStepTopTrace:VTransientResponse,mVdivBottomTrace:OutputLoadStep,A,µsdivDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomTemperatureProfilesTheboardwasoperatedatroomtemperatureinaverticalorientationasshownbelowForeachtestconditiontheunitwasallowedtothermallystabilize(>hr)beforemeasurementsweremadeInfraredmeasurementswerecorrelatedtothermocouplesattachedusingcoppertapeFigure–PhotographofBoardOrientationUsedforThermalTestingLLCrectifierLLCMOSFETsPFCinductorLLCtransformerInputbridgePFCboostMOSFETPFCboostdiodeJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomThermalResultsSummaryTestingConditionsThegoalofthisdesignistomaintainthetemperatureofcomponentsbelow°Catratedambientandload(W),lowline(VAC,Hz)Byextrapolatingthedatabelowfrom°Cto°CthisdesignmeetstheserequirementsMeasurementdataispresentedbelowTheunitwasallowedtothermallystabilize(>hoursinallcases)beforegatheringdataSemiconductorplasticandmagneticstemperatureswerecorrelatedviathermocouplesattachedwithcoppertapeVAC,HzVAC,HzOutputPower(W)InputPower(W)Efficiency()OutputLoadingV(A)Temperatures(°°°°C)AmbientLLCrectifierplasticpackage(D)LLCUpperMOSFET(Q)plasticpackageLLCLowerMOSFET(Q)plasticpackagePFCdiodeplasticpackage(D)PFCMOSFETplasticpackage(Q)Bridgerectifierplasticpackage(BR)LLCtransformer(T)surfacePFCinductor(L)surfaceDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomVAC,Hz,WOUTFigure–ThermalProfileRoomTemperature,VAC,Hz,WLoad(hr)JuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomVAC,Hz,WOUTFigure–ThermalProfileRoomTemperature,VAC,Hz,WLoad(hr)DER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomLLCGainPhaseFigure–LLCConverterGainPhase,LoadCrossoverFrequency–kHz,PhaseMargin°Figure–LLCConverterGainPhase,LoadCrossoverFrequency~kHz,PhaseMargin~°JuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomFigure–LLCConverterGainPhase,LoadGainCrossover–Hz,PhaseMargin~°DER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomConductedEMIConductedEMItestswereperformedwithaΩresistiveloadontheVmainoutputTheunitwasplacedonametallicgroundplane,whichinturnwashardwiredtotheACcordgroundTheresistiveloadwasconnectedtothegroundplanewithapairofnFcapacitors(oneatthepositivefeed,andoneatthereturn)tosimulatethecapacitivecouplingofLEDmodulestoagroundedstreetlightcasingThepeakshownat`MHzisactuallydBlowerthanshowninthegraph,astheEMIreceiverchangesscaleatMHzFigure–ConductedEMI,VACJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomLineSurgeDifferentialinputlineµssurgetestingwascompletedonasingletestunittoIECInputvoltagewassetatVACHzOutputwasloadedatfullloadandoperationwasverifiedfollowingeachsurgeeventDuringtestingnooutputinterruptionwasseenSurgeLevel(kV)GeneratorImpedance(Ω)InputVoltage(VAC)InjectionLocationInjectionPhase(°)TestResult(PassFail)kVLtoNPasskVLtoNPasskVL,NtoGPasskVL,NtoGPassNotes:)AgroundplanewasplacedunderthePSUbracketandloadresistors(loadresistorsarealuminumcaseunitsmountedonheatsinks)Theresistiveloadwasbypassedtothegroundplanewith()nFcapacitors(oneattheVinputlead,oneatreturn)tosimulatethecapacitanceofLEDarraystoagroundedstreetlightcase,butotherwisefeftfloatingTheinputACsafetygroundwirewasconnectedtothegroundplaneDER,WStreetLightPowerSupplyUsingPLCPGJunPageofPowerIntegrationsTel:Fax:wwwpowerintcomRevisionHistoryDateAuthorRevisionDescriptionandchangesReviewedMayRHInitialReleaseJunRevisedPCBImagesJuneDER,WStreetLightPowerSupplyUsingPLCPGPageofPowerIntegrationsTel:Fax:wwwpowerintcomForthelatestupdates,visitourwebsite:wwwpowerintcomPowerIntegrationsreservestherighttomakechangestoitsproductsatanytimetoimprovereliabilityormanufacturabilityPowerIntegrationsdoesnotassumeanyliabilityarisingfromtheuseofanydeviceorcircuitdescribedhereinPOWERINTEGRATIONSMAKESNOWARRANTYHEREINANDSPECIFICALLYDISCLAIMSALLWARRANTIESINCLUDING,WITHOUTLIMITATION,THEIMPLIEDWARRANTIESOFMERCHANTABILITY,FITNESSFORAPARTICULARPURPOSE,ANDNONINFRINGEMENTOFTHIRDPARTYRIGHTSPATENTINFORMATIONTheproductsandapplicationsillustratedherein(includingtransformerconstructionandcircuitsexternaltotheproducts)maybecoveredbyoneormoreUSandforeignpatents,orpotentiallybypendingUSandforeignpatentapplicationsassignedtoPowerIntegrationsAcompletelistofPowerIntegrations’patentsmaybefoundatwwwpowerintcomPowerIntegrationsgrantsitscustomersalicenseundercertainpatentrightsassetforthathttp:wwwpowerintcomiphtmThePILogo,TOPSwitch,TinySwitch,LinkSwitch,DPASwitch,PeakSwitch,EcoSmart,Clampless,EShield,Filterfuse,StackFET,PIExpertandPIFACTSaretrademarksofPowerIntegrations,IncOthertrademarksarepropertyoftheirrespectivecompanies©CopyrightPowerIntegrations,IncPowerIntegrationsWorldwideSalesSupportLocationsWORLDHEADQUARTERSHellyerAvenueSanJose,CA,USAMain:CustomerService:Phone:Fax:email:usasalespowerintcomGERMANYRueckertstrasseD,MunichGermanyPhone:Fax:email:eurosalespowerintcomJAPANKoseiDaiBldg,,ShinYokohama,Kohokuku,Yokohamashi,KanagawaPhone:Fax:email:japansalespowerintcomTAIWANF,No,NeiHuRd,SecNeiHuDistTaipei,Taiwan,ROCPhone:Fax:email:taiwansalespowerintcomCHINA(SHANGHAI)Rm,Tower,KerryEverbrightCityNoTianmuRoadWest,Shanghai,PRCPhone:Fax:email:chinasalespowerintcomINDIA#,thMainRoadVasanthanagarBangaloreIndiaPhone:Fax:email:indiasalespowerintcomKOREARM,FLKoreaCityAirTerminalBD,SamsungDong,KangnamGu,Seoul,,KoreaPhone:Fax:email:koreasalespowerintcomUNITEDKINGDOMstFloor,StJames’sHouseEastStreet,FarnhamSurrey,GUTJUnitedKingdomPhone:()Fax:()email:eurosalespowerintcomCHINA(SHENZHEN)RmA,BCthFloor,BlockC,ElectronicsScienceandTechnologyBuilding,ShennanZhongRd,Shenzhen,Guangdong,China,Phone:Fax:email:chinasalespowerintcomITALYViaDeAmicisBressoMI–ItalyPhone:Fax:email:eurosalespowerintcomSINGAPORENewtonRoad,#GoldhillPlaza,Singapore,Phone:Fax:email:singaporesalespowerintcomAPPLICATIONSHOTLINEWorldWideAPPLICATIONSFAXWorldWid
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