OB5269,六级能效

©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-1-OB5269HighVoltageGreenModePWMControllerGENERALDESCRIPTIONOB5269isahighlyintegratedcurrentmodePWMcontrolICwithhighvoltagestartup,optimizedforhighperformance,lowstandbypowerconsumptionandcosteffectiveofflineflybackconverterapplications.PWMswitchingfrequencyatnormaloperationisinternallyfixedandistrimmedtoatightrange.Atnoloadorlightloadcondition,theICoperatesinextended‘burstmode’tominimizeswitchingloss.Verylowstandbypowerconsumptionandveryhighconversionefficiencyisthusachieved.HighvoltagestartupisimplementedinOB5269,whichfeatureswithshortstartuptimeandlowstandbycurrent.OB5269offerscompleteprotectioncoveragewithauto-recoveryincludingCycle-by-Cyclecurrentlimiting(OCP),overloadprotection(OLP),andVDDundervoltagelockout(UVLO).Italsoprovidestheprotectionswithlatchedshutdownincludingovertemperatureprotection(OTP),andovervoltage(fixedoradjustable)protection(OVP).ExcellentEMIperformanceisachievedwithOn-Brightproprietaryfrequencyshufflingtechnique.Thetoneenergyatbelow22KHZisminimizedtoavoidaudionoiseduringoperation.OB5269isofferedinSOP8package.FEATURES■HighVoltageStartup■PoweronSoftStartReducingMOSFETVdsStress■FrequencyshufflingforEMI■ExtendedBurstModeControlForImprovedEfficiencyandMinimumStandbyPower■AudioNoiseFreeOperation■Fixed65KHZSwitchingFrequency■ComprehensiveProtectionCoverageoVDDUnderVoltageLockoutwithHysteresis(UVLO)oCycle-by-cycleovercurrentprotection(OCP)oOverloadProtection(OLP)withauto-recoveryoOverTemperatureProtection(OTP)withlatchshutdownoVDDOvervoltageProtection(OVP)withlatchshutdownoAdjustableOVPthroughexternalZenerAPPLICATIONSOfflineAC/DCflybackconverterfor■BatteryCharger■PowerAdaptor■Open-frameSMPSTYPICALAPPLICATION张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-2-OB5269HighVoltageGreenModePWMControllerGENERALINFORMATIONPinConfigurationTheOB5269isofferedinSOP8package,shownasbelow.RTFBCSGNDHVNCVDDGATEOB526912345678OrderingInformationPartNumberDescriptionOB5269CPSOP8,Pb-freeOB5269CPASOP8,Pb-freeinTapingPackageDissipationRatingPackageRθJA(℃/W)SOP8150AbsoluteMaximumRatingsParameterValueVDDDCSupplyVoltage30VHigh-VoltagePin,HV-0.3to500VVDDZenerClampVoltageNoteVDD_Clamp+0.1VVDDDCClampCurrent10mAFBInputVoltage-0.3to7VCSInputVoltage-0.3to7VRTInputVoltage-0.3to7VMin/MaxOperatingJunctionTemperatureTJ-40to150℃Min/MaxStorageTemperatureTstg-55to160℃LeadTemperature(Soldering,10secs)260℃Note:VDD_Clamphasanominalvalueof32V.Stressesbeyondthoselistedunder“absolutemaximumratings”maycausepermanentdamagetothedevice.Thesearestressratingsonly,functionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunder“recommendedoperatingconditions”isnotimplied.Exposuretoabsolutemaximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.OB5269XXXCurrentModePWMControllerwithHVStartupPackageC:SOP8PackagePbfreeP:lead-freePackingBlank:TubeA:Taping张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-3-OB5269HighVoltageGreenModePWMControllerMarkingInformationYWWZZZOB5269CPSY:YearCodeWW:WeekCode(01-52)ZZZ:LotCodeC:SOP8PackageP:Pb-freePackageS:InternalCode(Optional)TERMINALASSIGNMENTSPinNumPinNameI/ODescription1RTIDualfunctionpin.EitherconnectedthroughaNTCresistortogroundforovertemperatureshutdown/latchcontrolorconnectedthroughZenertoVDDforadjustableovervoltageprotection2FBIFeedbackinputpin.ThePWMdutycycleisdeterminedbyvoltagelevelintothispinandthecurrent-sensesignalatCSpin3CSICurrentsenseinput4GNDPGround5GateOTotem-polegatedriveroutputforpowerMosfet6VDDPPowerSupply8HVPConnectedtothelineinputorbulkcapacitorviaresistorsforstartupRECOMMENDEDOPERATINGCONDITIONSymbolParameterMin/MaxUnitVDDVDDSupplyVoltage12to23.5VTAOperatingAmbientTemperature-20to85℃张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-4-OB5269HighVoltageGreenModePWMControllerBLOCKDIAGRAMVDD6OVPCS3FB2ROLPGNDPWMComparatorCPLOSCExtendedBurstmodeRSQInternalsupplyBurstmodeUVLOSlopecompensationOCP5VVthLDOPORbDebounceRLEBSoftDriverSoftStartLogicControlCSFloatLatchRT1Vth_otpGATE5ClampVth_ovp8HV4HVstart张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-5-OB5269HighVoltageGreenModePWMControllerELECTRICALCHARACTERISTICS(TA=25℃,VDD=15V,unlessotherwisenoted)SymbolParameterTestConditionsMinTyp.MaxUnitIHVSupplycurrentfromHVpinVDD=2V,HV=100V22.85mAleakageHVpinleakagecurrentafterstartupVDD=15V,HV=500V10uASupplyVoltage(VDD)IstartupVDDStartupCurrentVDD=UVLO(OFF)-1V,measureleakagecurrentintoVDD520uAI_VDD_OperationOperationCurrentVFB=3V1.82.5mAUVLO(ON)VDDUnderVoltageLockoutEnter8.39.310.3VUVLO(OFF)VDDUnderVoltageLockoutExit(Recovery)14.315.316.3VVpull-upPull-upPMOSactive12VVdd_clampIvdd=10mA303234VOVP(ON)OvervoltageprotectionvoltageFB=3VRampupVDDuntilgateclockisoff242628VVth_recoveryAutoreleasethresholdvoltage5VVth_latchLatchreleasethreshold4.2VFeedbackInputSection(FBPin)VFB_OpenVFBOpenLoopVoltage3.95VAvcsPWMinputgainΔVFB/ΔVCS1.7V/VMaximumdutycycleMaxdutycycle@VDD=14V,VFB=3V,VCS=0.3V758085%Vref_greenThethresholdentergreenmode2VVref_burst_HThethresholdexitburstmode1.2VVref_burst_LThethresholdenterburstmode1.1VIFB_ShortFBpinshortcircuitcurrentShortFBpintoGNDandmeasurecurrent360uAVTH_PLPowerLimitingFBThresholdVoltage3.7VTD_PLPowerlimitingDebounceTime808896mSecZFB_INInputImpedance17KohmCurrentSenseInput(CSPin)SSTSoftstarttime4msT_blankingLeadingedgeblankingtime320nsZSENSE_INInputImpedance40KohmTD_OCOverCurrentDetectionandControlDelayFromOverCurrentOccurstillthegatedriveroutputstartstoturnoff60nSecVTH_OCInternalCurrentLimitingThresholdVoltagewithzerodutycycle0.720.750.78VVocp_clampingCSvoltageclamper0.95VOscillator张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-6-OB5269HighVoltageGreenModePWMControllerFOSCNormalOscillationFrequencyVDD=15V,FB=3V,606570KHZ△f_OSCFrequencyjittering+/-4%F_shufflingShufflingfrequency32Hz△f_TempFrequencyTemperatureStability1%△f_VDDFrequencyVoltageStability1%F_BurstBurstModeSwitchFrequency22KHZGatedriverVOLOutputlowlevel@VDD=15V,Io=20mA1VVOHOutputhighlevel@VDD=15V,Io=20mA8VV_clampingOutputclampvoltage13VT_rOutputrisingtime1V~10V@CL=1000pF70nST_fOutputfallingtime10V~1V@CL=1000pF30nSOvertemperatureprotectionIRTOutputcurrentofRTpin95100105uAVth_OTPThresholdvoltageforOTP0.9511.05VTd_OTPOTPdebouncetime8CycleVRT_FLVoltageatfloatingRTpin2.6VVth_OVPExternalOVPthresholdvoltage3.6VTd_OVPExternalOVPdebouncetime8Cycle张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-7-OB5269HighVoltageGreenModePWMControllerCHARACTERIZATIONPLOTSVDD=15V,TA=25℃conditionappliesifnototherwisenoted.I_startup(uA)vsTemperature(℃)810121416-4004080120Temperature(℃)I_startup(uA)Vth_otp(V)vsTemperature(℃)0.980.9911.01-4004080120Temperature(℃)Vth_otp(V)UVLO_on(V)vsTemperature(℃)99.29.49.6-4004080120Temperature(℃)UVLO_on(V)UVLO_off(V)vsTemperature(℃)1515.215.415.615.8-4004080120Temperature(℃)UVLO_off(V)Vth_OC(V)vsDuty(%)0.70.750.80.850.90.951020406080Duty(%)Vth_OC(V)Fosc(KHz)vsTemperature(℃)6464.56565.5-4004080120Temperature(℃)Fosc(KHz)张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-8-OB5269HighVoltageGreenModePWMControllerOPERATIONDESCRIPTIONOB5269isahighlyintegratedcurrentmodePWMcontrolICoptimizedforhighperformance,lowstandbypowerconsumptionandcosteffectiveofflineflybackconverterapplications.The‘Extendedburstmode’controlgreatlyreducesthestandbypowerconsumptionandhelpsthedesigneasilytomeettheinternationalpowerconservationrequirements.•InternalHighVoltageStartupandUnderVoltageLockout(UVLO)OB5269integratesHVstartupcircuit,andprovidesabout2.8mAcurrenttochargeVDDpinduringpoweronstatefromHVpin.WhenVDDcapvoltageishigherthanUVLO(OFF),thechargecurrentisswitchedoff.Atthismoment,theVDDcapacitorprovidescurrenttoOB5269untiltheauxiliarywindingofthemaintransformerstartstoprovidetheoperationcurrent.Ingeneralapplication,a51KΩresistorisrecommendedtobeplacedinthehighvoltagepathtolimitthecurrent.UVLO_offUVLO_on2.8mAVDDtttHVCurrentVDDCurrentStartupCurrentOperationCurrentFig1Startupcurrenttiming•OperatingCurrentThetypicaloperatingcurrentofOB5269is1.8mA.Goodefficiencyisachievedwiththislowoperatingcurrenttogetherwiththe‘Extendedburstmode’controlfeatures.•SoftStartOB5269featuresaninternal4mssoftstarttosoftentheelectricalstressoccurringinthepowersupplyduringstartup.Itisactivatedduringthepoweronsequence.AssoonasVDDreachesUVLO(OFF),theCSpeakvoltageisgraduallyincreasedfrom0Vtothemaximumlevel.Everyrestartupbeginswithasoftstart.•FrequencyshufflingforEMIimprovementThefrequencyshuffling(switchingfrequencymodulation)isimplementedinOB5269.Theoscillationfrequencyismodulatedsothatthetoneenergyisspreadout.ThespreadspectrumminimizestheconductionbandEMIandthereforeeasesthesystemdesign.•Green-ModeOperationOB5269providesgreen-modecontroltoreducetheswitchingfrequencyinlight-loadandno-loadconditions.VFB,whichisderivedfromthevoltagefeedbackloop,istakenasthereference.OnceVFBislowerthanthethresholdvoltage(Vref_green),switchingfrequencyiscontinuouslydecreasedtotheminimumgreen-modefrequencyofaround22KHz.•ExtendedBurstModeOperationAtlightloadorzeroloadcondition,mostofthepowerdissipationinaswitchingmodepowersupplyisfromswitchinglossintheMOSFET,thecorelossofthetransformerandthelossinthesnubbercircuit.Themagnitudeofpowerlossisinproportiontotheswitchingfrequency.Lowerswitchingfrequencyleadstothereductiononthepowerlossandthusconservestheenergy.Theswitchingfrequencyisinternallyadjustedatnoloadorlightloadcondition.Theswitchingfrequencyisreducedatlight/noloadconditiontoimprovetheconversionefficiency.Atlightloadornoloadcondition,theFBinputdropsbelowburstmodethresholdvoltage(Vref_burst_L)anddeviceentersBurstModecontrol.ThegatedriveroutputswitchesonlywhenFBvoltageishigherthanthethresholdvoltage(Vref_burst_H)tooutputanonstate.Otherwisethegatedriveremainsatoffstatetominimizetheswitchinglossandreducesthestandbypowerconsumptiontothegreatestextend.Theswitchingfrequencycontrolalsoeliminatestheaudionoiseatanyloadingconditions.•OscillatorOperationTheswitchingfrequencyisinternallyfixedat65KHZ.NoexternalfrequencysettingcomponentsarerequiredforPCBdesignsimplification.张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-9-OB5269HighVoltageGreenModePWMController•CurrentSensingandLeadingEdgeBlankingCycle-by-CyclecurrentlimitingisofferedinOB5269currentmodePWMcontrol.TheswitchingcurrentisdetectedbyasenseresistorconnectedtotheCSpin.AninternalleadingedgeblankingcircuitchopsoffthesensedvoltagespikesduetosnubberdiodereverserecoveryandsurgegatecurrentofpowerMOSFETatinitialinternalpowerMOSFETonstate.ThecurrentlimitingcomparatorisdisabledandcannotturnofftheinternalpowerMOSFETduringtheblankingperiod.ThePWMdutycycleisdeterminedbythecurrentsenseinputvoltageandtheFBinputvoltage.•InternalSynchronizedSlopeCompensationBuilt-inslopecompensationcircuitaddsvoltagerampontothecurrentsenseinputvoltageforPWMgeneration.ThisgreatlyimprovesthecloseloopstabilityatCCMandeliminatesthesub-harmonicoscillationandthusreducestheoutputripplevoltage.•DriverThepowerMOSFETisdrivenbyadedicatedgatedriverforpowerswitchingcontrol.TooweakgatedriverresultsinhigherconductionandswitchlossofMOSFETwhiletoostronggatedriverresultsthecompromiseofEMI.Agoodtradeoffisachievedthroughthebuilt-intotempolegatedesignwithrightoutputstrengthanddeadtimecontrol.ThelowidlelossandgoodEMIsystemdesignisachievedwiththisdedicatedcontrolscheme.•ProtectionControlsGoodpowersupplysystemreliabilityisachievedwithauto-recoveryprotectionfeaturesincludingCycle-by-Cyclecurrentlimiting(OCP),OverLoadProtection(OLP),andUnderVoltageLockoutonVDD(UVLO),andlatchedshutdownfeaturesincludingovertemperatureprotection(OTP)andVDDovervoltageprotection(OVP).WithOn-Brightproprietarytechnology,theOCPislinevoltagecompensatedtoachieveconstantoutputpowerlimitovertheuniversalinputvoltagerange.AtoverloadconditionwhenFBinputvoltageexceedspowerlimitthresholdvalueformorethanTD_PL,controlcircuitshutsdowntheconverter.ItrestartswhenVDDvoltagedropsbelowVth_recovery.Forprotectionwithlatchedshutdownmode,controlcircuitshutdowns(latch)thepowerMOSFETwhenanOverTemperatureconditionorOverVoltageconditionisdetecteduntilVDDdropsbelowVth_latch,anddeviceenterspoweronrestart-upsequencethereafter.张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-10-OB5269HighVoltageGreenModePWMControllerPACKAGEMECHANICALDATADimensionsInMillimetersDimensionsInInchesSymbolMinMaxMinMaxA1.3501.7500.0530.069A10.0500.2500.0020.010A21.2501.6500.0490.065b0.3100.5100.0120.020c0.1700.2500.0060.010D4.7005.1500.1850.203E3.8004.0000.1500.157E15.8006.2000.2280.244e1.270(BSC)0.05(BSC)L0.4001.2700.0160.050θ0º8º0º8º张高琨13760160570©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_526902-11-OB5269HighVoltageGreenModePWMControllerIMPORTANTNOTICERIGHTTOMAKECHANGESOn-BrightElectronicsCorp.reservestherighttomakecorrections,modifications,enhancements,improvementsandotherchangestoitsproductsandservicesatanytimeandtodiscontinueanyproductorservicewithoutnotice.Customersshouldobtainthelatestrelevantinformationbeforeplacingordersandshouldverifythatsuchinformationiscurrentandcomplete.WARRANTYINFORMATIONOn-BrightElectronicsCorp.warrantsperformanceofitshardwareproductstothespecificationsapplicableatthetimeofsaleinaccordancewithitsstandardwarranty.Testingandotherqualitycontroltechniquesareusedtotheextentitdeemsnecessarytosupportthiswarranty.Exceptwheremandatedbygovernmentrequirements,testingofallparametersofeachproductisnotnecessarilyperformed.On-BrightElectronicsCorp.assumesnoliabilityforapplicationassistanceorcustomerproductdesign.CustomersareresponsiblefortheirproductsandapplicationsusingOn-Bright’scomponents,datasheetandapplicationnotes.Tominimizetherisksassociatedwithcustomerproductsandapplications,customersshouldprovideadequatedesignandoperatingsafeguards.LIFESUPPORTOn-BrightElectronicsCorp.’sproductsarenotdesignedtobeusedascomponentsindevicesintendedtosupportorsustainhumanlife.On-brightElectronicsCorp.willnotbeheldliableforanydamagesorclaimsresultingfromtheuseofitsproductsinmedicalapplications.MILITARYOn-BrightElectronicsCorp.’sproductsarenotdesignedforuseinmilitaryapplications.On-BrightElectronicsCorp.willnotbeheldliableforanydamagesorclaimsresultingfromtheuseofitsproductsinmilitaryapplications.张高琨13760160570