Automotive LED lighting BYD

AutomotiveLEDSolutionDate:2010/3/17O2Micro-IntelligentLightingAgenda1.Basictheory2.HeadLight3.FogLight4.Day-LightorBrowLight5.IndicatorLight6.BrakeLightLEDFeature02468101214161820222426283032343638404244464850525456586062642.82.933.13.23.33.43.53.63.73.8VF:2.83.8V.Current:20mA,60mA,100mA,330mA,1A20mA,typicalVFis3.3V.TotalcurrentsenseDnVoutDnn0BoostblockDn1R1I1R3ISENInOVPD1I2Dn2D2R2Feature:1.Costisgood.2.Itcan’tdetectLEDopensituation.whenonestringisbroken,therelativecurrentdriftedtootherstrings.3.Seriouscurrentbalanceissue.4.Itcan’tdetectoneLEDshortandonestringopensituation.Constantvoltagesolution.voltageForwardLEDMaxoutVmV___currentratinginwhenVoltageforwardoutbmVVV_____Feature:1.Currentofeverystringisindependent.2.3.4.5.Openorshortprotection.D2DmnI1InVoutB2I2BalanceBlockDm2B1Dm1BmDnD1mstringbIVPonconsumpatiBoostconverter(max)(min)1maxVoutVinD(max))1(212maxmaxLEDITDDvoutL0max0(max)VTDIC＝DRVLCout10uVinQNMOS123VoutD121.Inductorselection:LTVinIonpeak2.MOSFETDoutinDSVVVV3.DiodeDselection4.CapacitorCoutselectionoutVVKeycomponentspecBuckconverter(min)(max)maxVinVoutDmaxmax2ITDVVLoutin1.Inductorselection:LTVVIonoutinpeak2.MOSFETinDSVV3.DiodeDselectioninVVKeycomponentspecHeadlight,OZ9986OZ9986Application―HighLEDcurrentapplication―Headlightfor1~6string,3~6series,500~1000mAAdvantage―HighpowerLEDapplication―Supportsupto3phaseshiftDriveoutput―Drivesupto6stringsinparallelOZ9986-PhaseShiftofDRV)(1005.54kRNFRTOP(N=NumberofDRV)Oscclockfrequencyis3timesofDRVfrequencyQ3AM30N03DPAKR410.15/1WQ9AM30N03DPAKD4SM560ASMCQ4AM30N03DPAKR60.15/1WL222uH/18mm*18mmISW1L122uH/18mm*18mmL322uH/18mm*18mmDRV1D2SM560ASMCDRV3C6100u/50v/8*11.5mmISW2D1SM560ASMCC32.2u/1206DRV2OZ9986–PhaseShift/SwitchModelBalanceRT1VSEN2ISW33ISW24ISW15SSTCMP6GNDA7DRV38DRV29DRV110GNDP11VDDP12COMP613COMP514COMP415COMP316COMP217COMP118ENA19ISEN120ISEN221ISEN322ISEN423ISEN524SEL28DIM27VDDA26ISEN625VSYNC29LPF30VDDISWGNDCOMPVDDDIMVSYNCDRVISENENAVINTestDataVinIin(A)Lampcurrent(A)efficiency(%)NearLEDlightspec.9VString171270971412V16VString2728721727String3718725709LEDCurrentBalancerate2.14%LEDOutputVoltage14.714.614.72.57%2.29%Efficiency9.0312162.072.12.113.6192.7312.14393.11%93.56%90.46%Testedona30Wheadlamp(nearlight)ofTAYIHTwinstarFeatures:DualchannelDC/DCconverterDrivesonestringofhighpowerLEDsperchannel180Degreesphaseshiftbetweenthetwodriveroutputs.IndependentPWMdimmingcontrolforeachchannelAnalogdimmingConstantoperationfrequencyOperationfrequencysynchronizationPowerMOSFETover-currentprotectionOver-voltageprotectionOutputtoreturnshort-circuitprotectionOutputover-loadprotectionLimited-current-condition(LCC)protectionOver-temperatureprotectionFaultStatusoutputTwinstar—ReferenceApplicationProject:Foglight,OZ9950Foglight,OZ99503SeriesLEDfor350mA=3.5WProject:Browlight,OZ9950Project:Browlight,OZ99509SeriesLEDfor30mA=1WIndicatorLightOZ9960Application–SideLightandDirectionLightAdvantage―LEDcurrentupto200mA―Support10series,1stringLED―InternalMOSFET,savingarea(DFN12)SchematicIndicatorLightOZ9993Application–SideLightandDirectionLightAdvantage―LEDcurrentupto200mA―Support10series,1stringLED―InternalMOSFET,savingarea(SOT23)SchematicBrakeLight---OZ9980Application―4string,multi-stringLEDapplication―HighcurrentLED,0~350mA,BuckapplicationAdvantage―Shutdownwithonestringopen/shortProtection―IndependentorCommonshutdown―Providemulti-channelapplication―EasyBrakinglightcontrol–FullBrightness―Linearcurrentregulation―LowEMIBrakeLight---OZ9980IndicatorLight:OZ9991―LEDcurrentupto1A―Support1stringandupto5seriesLED―Fewerexternalcomponentcount―InternalMOSFET,SOT23-6,savingareaTwoChannelLEDdriverfor1AapplicationWideinput:4.5~33VBuildinpowerMOSFET,savingArea.TailLight/Turnlight:OZ9983OZ9983ApplicationBuckOZ9983ApplicationBoostOZ523Supportconstantvoltageorconstantcurrent.1.5Acontinuousoutputcurrent.0.25OhminternalPowerMosfet.Stablecontrolloop.FixedSwitchingfrequency.Lowercurrentshutdownmode.Over-CurrentProtection.Over-TemperatureProtection.OZ523ApplicationAllInOneTHANKYOUO2MicroDemos