OB5282-Datasheet

©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_528201-1-OB5282HighVoltageGreenModePWMControllerwithBrownoutGENERALDESCRIPTIONOB5282isahighlyintegratedcurrentmodePWMcontrolICwithhighvoltagestartup,optimizedforhighperformance,lowstandbypowerconsumptionandcosteffectiveofflineflybackconverterapplications.Thecontroller‘sHVpinisusedforhighvoltagestartup,ACoffdetection,andX-capVoltagedischarge,thisstructureallowsthebrownoutdetectionaswell.Atfullloading,theICoperatesinfixedfrequency(65KHz)mode.Whentheloadinggoeslow,itoperatesinGreenmodewithvalleyswitchingforhighpowerconversionefficiency.Whentheloadisverysmall,theICoperatesin‘ExtendedBurstMode’tominimizethestandbypowerloss.Asaresult,highconversionefficiencycanbeachievedinthewholeloadingrange.HighvoltagestartupisimplementedinOB5282,whichfeatureswithshortstartuptimeandlowstandbypowerloss.OB5282offerscompleteprotectioncoverageincludingcycle-by-cyclecurrentlimiting(OCP),overloadprotection(OLP),overtemperatureprotection(OTP),outputandVDDovervoltageprotection.ExcellentEMIperformanceisachievedwithOn-Brightproprietaryfrequencyshufflingtechnique.Thetoneenergyatbelow25KHzisminimizedtoavoidaudionoiseduringoperation.OB5282isofferedinSOP8package.APPLICATIONSOfflineAC/DCflybackconverterfor■Poweradaptor■Open-frameSMPS■PKLoadApplicationFEATURES■Highvoltagestartup■PoweronsoftstartreducingMOSFETVdsstress■FrequencyshufflingforEMI■Multi-ModeOperation140KHzmaxfrequencymode@PeakLoad65KHzfixfrequencymode@FullLoadValleyswitchingoperation@GreenmodeBurstMode@LightLoad&NoLoad■Audionoisefreeoperation■Peakpowerdeliveryforpeakload■Tightenandprogrammableoutputovercurrentprotection■ComprehensiveprotectioncoverageoVDDundervoltagelockoutwithhysteresis(UVLO)oCycle-by-cycleovercurrentprotection(OCP)withauto-recoveryoOverloadprotection(OLP)withauto-recoveryoOvertemperatureprotection(OTP)withlatchshutdownoVDDovervoltageprotectionwithlatchshutdownoOutputovervoltageprotectionwithlatchshutdownoBrownoutprotectionwithauto-recoveryoOutputdiodeshortprotectionwithlatchshutdown■IntelligentACoffdetectionwithX-CAPdischargefunctionTYPICALAPPLICATIONEMIFilterACINVDDDCOutGNDFBHVPRTGATECSNCOB5282On-Brightconfidentialto©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_5282012OB5282HighVoltageGreenModePWMControllerwithBrownoutGENERALINFORMATIONPinConfigurationTheOB5282isofferedinSOP8package,shownasbelow.PRTFBCSGNDHVNCVDDGATE12345678OrderingInformationPartNumberDescriptionOB5282CPSOP8,Pb-freeOB5282CPASOP8,Pb-freeinTapingPackageDissipationRatingPackageRJA(℃/W)SOP890AbsoluteMaximumRatingsParameterValueVDDDCSupplyVoltageVOVP-1VHigh-VoltagePin,HV-0.3to500VFBInputVoltage-0.3to7VCSInputVoltage-0.3to7VPRTInputVoltage-0.3to7VMin/MaxOperatingJunctionTemperatureTJ-40to150℃OperatingAmbientTemperatureTA-40to85℃Min/MaxStorageTemperatureTstg-55to150℃LeadTemperature(Soldering,10secs)260℃RecommendedOperatingConditionSymbolParameterRangeVDDVCCSupplyVoltage12to28VC:SOP8P:Pb-freeBlank:TubeA:TapingOn-Brightconfidentialto©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_528201-3-OB5282HighVoltageGreenModePWMControllerwithBrownoutMarkingInformationYWWZZZOB5282CPY:YearCodeWW:WeekCode(01-52)ZZZ:LotCodeC:SOP8PackageP:Pb-freePackageS:InternalCode(Optional)TERMINALASSIGNMENTSPinNumPinNameI/ODescription1PRTIMultiplefunctionspin.ConnectingaNTCresistortogroundforOTPdetection.ConnectingaresistorfromVauxcanadjustOVPtriggervoltageanddetecttransformercoredemagnetization.IfbothOTPandOVPareneeded,adiodeshouldbeconnectedbetweenPRTpinandtheNTCresistor.2FBIFeedbackinputpin.ThePWMdutycycleisdeterminedbyvoltagelevelintothispinandthecurrent-sensesignalatCSpin3CSICurrentsenseinput4GNDPGround5GateOTotem-polegatedriveroutputforpowerMosfet6VDDPPowerSupply7NC8HVPConnectedtothelineinputviaresistorsanddiodesforstartupandx-capdischarge,thisPINallowsthebrownoutdetectionaswell.On-Brightconfidentialto©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_528201-4-OB5282HighVoltageGreenModePWMControllerwithBrownoutBLOCKDIAGRAMVDD6CS3FBOLPPWMcomparatorOSCRSQSlopecompensationAVDDLEBSoftDriverLogicControlGATETimerPRTPK/Green/BurstUVLOVref&IrefAVDDInternalblocksOLP25LatchOVPOVPOVPTempsenseEXOTP1EXOVPOTPGND4DiodeshortDioDemagSampleGmDioOVTPOVTPAllprtHVstartup8HVVth_pkPKdetectcomparatorBrownoutBrownoutCCloopOCPValleyDetectorValleyValleySOn-Brightconfidentialto©On-BrightElectronicsConfidentialPreliminaryDatasheetOB_DOC_DS_528201-5-OB5282HighVoltageGreenModePWMControllerwithBrownoutELECTRICALCHARACTERISTICS(TA=25℃,VDD=15V,unlessotherwisenoted)SymbolParameterTestConditionsMinTyp.MaxUnitIHV1SupplycurrentfromHVpin@VDD1VVDD=2V,HV=100V123.5mAIHV2SupplycurrentfromHVpin@VDD1VVDD=0.5V,HV=100V0.30.570.85mAleakageHVpinleakagecurrentafterstartupVDD=18V,HV=500V10uASupplyVoltage(VDD)IstartupVDDStartupCurrentVDD=UVLO(OFF)-1V,measureleakagecurrentintoVDD520uAI_VDD_OperationNormalOperationCurrentVFB=3V,CL=1nF2.53mAI_VDD_BurstBurstOperationCurrentVFB=0.5V,CL=1nF0.70.8mAUVLO(ON)VDDUnderVoltageLockoutEnter7.758.759.75VUVLO(OFF)VDDUnderVoltageLockou