TPS61165 High Brightness White LED Driver in …

1 VIN WVINSWFBGNDCTRLCOMPC21 Fm350mA220nFTPS61165L 1 : TOKO #A 915 _Y-100MC 1 : Murata GRM 188R 61 A475 KC 2 : Murata GRM 188R 61 E105KD 1 : ONsemi MBR0540T1 LED : OSRAM LW-W 5 SMON/OFFDIMMINGCONTROLL110 HmCopyright 2016, Texas Instruments IncorporatedProductFolderOrderNowTechnic alDocumentsTools &SoftwareSupport &CommunityReferenceDesignAn IMPORTANTNOTICEat the end of this datasheetaddressesavailability,warranty, changes,use in safety-criticalapplications,intellectual propertymattersand NOVEMBER2007 REVISEDAPRIL2016 TPS61165 High- Brightness , White LED Driverin WSONand SOT-23 Packages11 Features1 3-V to 18-VInputVoltageRange 38-VOpenLEDP rotection 200-mVReferenceVoltageWith2% Accuracy FlexibleOne-WireDigitaland PWMB rightnessControl Built-inSoft Start Up to 90%Efficiency 2-mm 2-mm ,and SOT-23 Package2 Applications High-BrightnessLEDL ighting WhiteLEDB acklightingfor MediaFormFactorDisplay HandheldDataTerminals(EPOS)

2 ThermostatDisplay HumanMachineInterface(HMI) VideoSurveillanceCamera Exit Signs HMI and ControlPanels IndustrialPCs IR LEDdriver Refrigerator Ovens3 DescriptionWitha 40-VratedintegratedswitchFET,theTPS61165 deviceis a boostconverterthatdrivesLEDsin ,allowingthe use of a high-brightnessLEDin defaultwhiteLEDcurrentis set with the externalsensorresistorRset,andthe feedbackvoltageisregulatedto 200 mV, as ,theLEDcurrentcanbecontrolledusingtheone -wiredigitalinterface(EasyScale protocol) ,a pulse-width-modulation(PWM)signalcan be appliedto the CTRLpin eitherdigitalor PWMmode,theTPS61165devicedoesnot burstthe LEDcurrent;therefore,it doesnot generateaudiblenoiseson maximumprotection,the devicefeaturesintegratedopen-LEDprotecti onthat disablesthe TPS61165deviceto preventthe outputfromexceedingits (1)PARTNUMBERPACKAGEBODYSIZE(NOM)TPS6116 5 SOT-23(6) (6) (1) For all availablepackages,see the orderableaddendumatthe end of the NOVEMBER2007.

3 TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporatedTableof Contents1 Pin Configurationand Applicationand 's and Don' Deviceand Mechanical,Packaging,and RevisionHistoryChangesfromRevisionC (January2015)to RevisionDPage Addednew (July2011)to RevisionCPage AddedPin Configurationand Functionssection,FeatureDescriptionsecti on,DeviceFunctionalModes,Applicationand Implementationsection,PowerSupplyRecomme ndationssection,Layoutsection,Deviceand DocumentationSupportsection,andMechanica l,Packaging,and (May2010)to RevisionBPage Replacedthe DissipationsRatingsTablewith the ChangedAdditionalApplicationCircuitsand addedtext "For "..18 ChangesfromOriginal(November2007)to RevisionAPage Added"and SOT-23 Package" to the Title,the last Featuresitem,and the last paragraphof the Added6-pinSOT-23pinoutto the Addedthe DBVpackageto the Changedthe DissipationRatingTableto includethe Changedtwo valuesin the last paragraphof the MAXIMUMOUTPUTCURRENT section- From:65 mA To: 110mA in typicalcondition,and From:85 mA To: 150 mA in NOVEMBER2007 REVISEDAPRIL2016 ProductFolderLinks.

4 TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporated(1)The DRVpackageis availablein tapeand R suffix( TPS61165 DRVR)to orderquantitiesof 3000partsper reel or add T suffix( TPS61165 DRVT)to order250 partsper DeviceOptionsTAOPENLEDPROTECTIONPACKAGE( 1)PACKAGEMARKING 40 C to 85 C38 V (typical) TPS61165 DRVCCQTPS61165 DBVDAK6 Pin Configurationand FunctionsDRVP ackage6-PinWSONWithThermalPadTop ViewDBVP ackage6-PinSOT-23 Top ViewPin of the is a multifunctionalpin whichcan be usedforenablecontrol,PWMand the externalcapacitorto this pinto compensatethe for senseresistorfromFB to is the switchingnodeof the switchedside of the inductortoSW. This pin is also usedto sensethe outputvoltagefor inputsupplypin for the IC. ConnectVIN to a supplyvoltagebetween3 V and 18 The thermalpad mustbe solderedto the possible,use thermalvia to connectto groundplanefor NOVEMBER2007 : TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporated(1)Stre ssesbeyondthoselistedunderAbsoluteMaximu mRatingsmay causepermanentdamageto the stressratingsonly,and functionaloperationof the deviceat theseor any otherconditionsbeyondthoseindicatedunder RecommendedOperatingConditionsis not absolute-maximum-ratedconditionsfor extendedperiodsmay affectdevicereliability.

5 (2)All voltagevaluesare with respectto (unlessotherwisenoted)(1)MINMAXUNITVINS upplyvoltageson VIN(2) CTRL(2) FB and COMP(2) SW(2) 40150 CTstgStoragetemperature 65150 C(1)Thesevaluesare recommendedvaluesthat havebeensuccessfullytestedin be acceptableinotherapplicationsbut shouldbe fully testedby the ,VIN318 VVOO utputvoltagerangeVIN38 VLInductor(1)1022 HfdimPWMdimmingfrequency5100kHzCINI nputcapacitor1 FCOO utputcapacitor110 FTAO peratingambienttemperature 4085 CTJO peratingjunctiontemperature 40125 C(1)For moreinformationabouttraditionaland new thermalmetrics,see theSemiconductorand IC PackageThermalMetricsapplicationreport(S PRA953).(2)For thermalestimatesof this devicebasedon PCBcopperarea,see the TI (1)(2) TPS61165 UNITDRV(WSON)DBV(SOT-23)6 PINS6 PINSR C/WR JC(top)Junction-to-case(top) C/WR C/W C/W C/WR JC(bottom)Junction-to-case(bottom) NOVEMBER2007 REVISEDAPRIL2016 ProductFolderLinks.

6 TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporated(1)To selectEasyScalemode,the CTRLpin has to be low for V, CTRL= VIN, TA= 40 C to +85 C, typicalvaluesare at TA= 25 C (unlessotherwisenoted)PARAMETERTESTCONDI TIONSMINTYPMAXUNITSUPPLYCURRENTVII nputvoltagerange,VIN318 VIQO peratingquiescentcurrentinto VIND evicePWMswitchingno ,VIN= V1 (CTRLh)CTRL logichigh voltageVIN= 3 V to 18 (CTRLl)CTRL logiclow voltageVIN = 3 V to 18 (CTRL)CTRL pull downresistor4008001600k toffCTRL pulsewidthto shutdownCTRL high to (1)CTRLpin low260 stes_delayEasyScaledetectiondelay100 stes_winEasyScaledetectionwindowtimeMeas uredfromCTRL high1msVOLTAGEANDCURRENTCONTROLVREFV oltagefeedbackregulationvoltage196200204 mVV(REF_PWM)Voltagefeedbackregulationvol tageunderbrightnesscontrolVFB= 50 mV475053mVVFB= 20 mV172023 IFBV oltagefeedbackinputbias currentVFB= 200 mV2 cycleVFB= 100 mV90%93%tmin_onMinimumon pulsewidth40nsIsinkComppin sink current100 AIsourceComppin sourcecurrent100 AGeaErroramplifiertransconductance240320 400umhoReaErroramplifieroutputresistance 6M feaErroramplifiercrossoverfrequency5 pF connectedto COMP500kHzPOWERSWITCHRDS(ON)N-channelMOS FETon-resistanceVIN = VIN = 35 V, TA= 25 C1 AOC and OLPILIMN-ChannelMOSFET currentlimitD = currentlimitD = for half currentlimit5msVovpOpenLEDprotectionthre sholdMeasuredon the SW pin373839VV(FB_OVP)

7 OpenLEDprotectionthresholdon FBMeasuredon the FB pin, percentageof Vref,Vref = 200 mV and 20 mV50%tREFVREF filter time constant180 ststepVREF rampup timeEachstep,Measuredas numberof cyclesofthe sTHERMALSHUTDOWNT shutdownThermalshutdownthreshold160 CThysteresisThermalshutdownthresholdhyst eresis15 C405060708090100050100150200250300 Output Current - mA3 LEDs ( VOUT = 12 V )VIN = VVIN = 5 VVIN = 3 VEfficiency - %405060708090100050100150200250300 VIN = 12 VVIN = VVIN = 5 V6 LEDs ( VOUT = 24 V )Output Current - mAEfficiency - %6 TPS61165 SLVS790D NOVEMBER2007 : TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporated(1)Ackn owledgeconditionactive0, this conditionis only appliedin casethe RFAbit is set. Open-drainoutput,line mustbe pulledhigh bythe host with of programstream2 stEOSEnd time of programstream2360 stH_LBHightime low bitLogic02180 stL_LBLow time low bitLogic02 tH_LB360 stH_HBHightime high bitLogic12 tL_HB360 stL_HBLow time high bitLogic12180 sVACKNLA cknowledgeoutputvoltagelowOpendrain,Rpul lup=15k to (1)2 stACKND urationof acknowledgeconditionSee(1)512 Tableof GraphsFIGUREE fficiency3 LEDs(VOUT= 12 V); VIN= 3, 5, V; L = 10 HFigure1 Efficiency6 LEDs(VOUT= 24 V); VIN= 5, , 12 V; L = 10 HFigure2 CurrentlimitTA= 25 CFigure3 CurrentlimitFigure4 EasyscalestepFigure13 PWMdimminglinearityVIN= V; PWMFreq= 10 kHz and 32 kHzFigure14 Outputrippleat PWMdimming3 LEDs;VIN= 5 V; ILOAD= 350 mA; PWM= 32 kHzFigure15 Switchingwaveform3 LEDs;VIN= 5 V; ILOAD= 3500mA; L = 10 HFigure5 Start-up3 LEDs.

8 VIN= 5 V; ILOAD= 350 mA; L = 10 HFigure6 OpenLEDprotection8 LEDs;VIN= V; ILOAD= 20 mAFigure7 Figure1. Efficiencyvs OutputCurrentFigure2. Efficiencyvs OutputCurrentOPEN LED 5 V/divFB 200 mV/divVOUT 10 V/divI 200 mA/divLt - 100 s/divmCTRL 5 V/divVOUT 5 V/divCOMP 500 mV/divI 500 mA/divLt - 2 ms/divSW 5 V/divt - 400 ns/divVOUT 200 mV/div ACI 500 mA/divL800900100011001200130014001500160 02030405060708090 Duty Cycle - %Switch Current Limit - A8009001000110012001300140015001600-40 -20020406080 100 120 140 Temperature - C Switch Current Limit - NOVEMBER2007 REVISEDAPRIL2016 ProductFolderLinks: TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporatedFigure3 . SwitchCurrentLimitvs DutyCycleFigure4. SwitchCurrentLimitvs TemperatureFigure5. SwitchingWaveformFigure6. Start-UpFigure7.

9 OpenLEDP rotectionD1 SWRampGeneratorOscillatorCurrentSensorOL PCTRLGNDC3L1+FBReferenceControlErrorAmpl ifer21 RsetC2 VinC1 PWM Control4653 COMPSoftStart-upCopyright 2016, Texas Instruments Incorporated8 TPS61165 SLVS790D NOVEMBER2007 : TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016,TexasInstrumentsIncorporated8 TPS61165is a high-efficiency,high-output-voltageboost converterin deviceisidealfor drivingwhiteLEDsin serialLEDconnectionprovidesevenilluminat ionby sourcingthe sameoutputcurrentthroughall LEDs,eliminatingthe needfor deviceintegrates40- and operatesin pulsewidthmodulation(PWM)with (Foroperationsee theFunctionalBlockDiagram.) The dutycycleof the converteris set by the erroramplifieroutputand the currentsignalappliedto the controlarchitectureis basedon traditionalcurrent-modecontrol;therefore ,slopecompensationis addedto the currentsignalto allowstableoperationforduty cycleslargerthan40%.

10 The feedbackloop regulatesthe FB pin to a low referencevoltage(200mV typical),reducingthe powerdissipationin the NOVEMBER2007 REVISEDAPRIL2016 ProductFolderLinks: TPS61165 SubmitDocumentationFeedbackCopyright 2007 2016, integratedinto the deviceto avoida deviceisenabled,the voltageat FB pin rampsup to the referencevoltagein 32 steps eachsteptakes213 s. Thisensuresthat the outputvoltagerisesslowlyto reducethe ,for the first 5 msecaftertheCOMP voltageramps,the currentlimit of the switchis set to half of the normalcurrentlimit period,the inputcurrentis keptbelow700 mA (typical).Thesetwo featuresensuresmoothstart-upandminimizet he inrushcurrent(seeFigure6). the resultof TPS61165monitorsthe voltageat the SW pin and FB pin circuitryturnsoff the switchFETand shutsdownthe devicewhenbothof the followingconditionspersistfor 8 switchingclockcycles:(1) the SWvoltageexceedsthe VOVP threshold,and (2) the FB voltageis less thanhalf of a result,theoutputvoltagefalls to the levelof the deviceremainsin shutdownmodeuntil it is enabledbytogglingthe CTRLpin.