User's Guide SLOU264–March2010 TPA2015D1 Audio Power Amplifier Evaluation Module (EVM) Contents 1 Introduction .................................................................................................................. 1 1.1 Description .......................................................................................................... 1 1.2 TPA2015D1Specifications ....................................................................................... 1 2 Operation..................................................................................................................... 2 2.1 QuickStartListforStand-AloneOperation ..................................................................... 2 2.2 BoostSettings ...................................................................................................... 3 2.3 PowerUp............................................................................................................ 4 3 Reference .................................................................................................................... 5 3.1 TPA2015D1EVMSchematic ..................................................................................... 5 3.2 TPA2015D1EVMPCBLayers ................................................................................... 6 3.3 TPA2015D1EVMPartsList ...................................................................................... 7 ListofFigures 1 TPA2015D1EVMSchematic.............................................................................................. 5 2 TPA2015D1EVM–TopandBottomLayers............................................................................ 6 ListofTables 1 TPA2015D1EVMPartsList............................................................................................... 7 1 Introduction ThissectionprovidesanoverviewoftheTexasInstruments(TI)TPA2015D1audiopoweramplifier evaluationmodule(EVM).Itincludesabriefdescriptionofthemoduleandalistofspecifications. 1.1 Description TheTPA2015D1isahighefficiencyClass-Daudiopoweramplifierwithbattery-trackingSpeakerGuard™ technologyandanintegratedboostconverter.Itdrivesupto2Wintoan8-Ω speakerfromlowsupply voltages. TheTPA2015D1audiopoweramplifierevaluationmoduleisacomplete,stand-aloneaudioboard.It containstheTPA2015D1WCSP(YZH)Class-Daudiopoweramplifierwithanintegratedboostconverter. AllcomponentsandtheevaluationmodulearePb-Free. 1.2 TPA2015D1 Specifications V Supplyvoltagerange 2.3Vto5.2V BAT I Supplycurrent 3AMaximum DD P Continuousoutputpowerperchannel,8Ω,V =3.6V 2W O BAT V AudioInputVoltage 0VtoV I BAT R Minimumloadimpedance 6Ω L SpeakerGuardisatrademarkofTexasInstruments. SLOU264–March2010 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) 1 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

Operation www.ti.com 2 Operation ThissectiondescribeshowtooperatetheTPA2015D1EVM. 2.1 Quick Start List for Stand-Alone Operation UsethefollowingstepswhenoperatingtheTPA2015D1EVMasastand-aloneorwhenconnectingthe EVMintoexistingcircuitsorequipment. 2.1.1 PowerandGround 1. EnsuretheexternalpowersourcesaresettoOFF. 2. Setthepowersupplyvoltagebetween2.3Vand5.2V.Whenconnectingthepowersupplytothe EVM,makesuretoattachthegroundconnectiontotheGNDconnectorfirstandthenconnectthe positivesupplytotheVDDconnector.Verifythattheconnectionsaremadetothecorrectbanana jacks. 2.1.2 Audio 1. Ensurethattheaudiosourceissettotheminimumlevel. 2. ConnecttheaudiosourcetotheinputRCAjackIN.Incaseofdifferentialaudioinputensurethatthe jumperJPSEisnotinserted.Incaseofasingle-endedaudioinputensurethatthejumperJPSEis inserted,therebygroundingIN+throughtheinputcapacitorC2. 3. Connectspeakers(8Ωto32 Ω)totheoutputbananajacksOUT+andOUT–. 4. JPOUTallowstheusertoconnectonetheoutputsthroughanRCfilter.Notethattheusermust providethenecessaryresistors,R7andR8. 5. TheunfilteredoutputoftheTPA2015D1canbemeasuredbetweentestpointsTPOUT– andTP OUT+ 2.1.3 AGCControl TheTPA2015D1hasfourselectableinflectionpointsettings:3.35V,3.55V,3.75V,anddisabled. 1. UsejumperAGCshuntedbetweenpins1and2toselectthe3.35Vinflectionpoint(AGC1). 2. UsejumperAGCshuntedbetweenpins3and4toselectthe3.55Vinflectionpoint(AGC2). 3. UsejumperAGCshuntedbetweenpins5and6toselectthe3.75Vinflectionpoint(AGC3). 4. RemovethejumperAGCtodisabletheinflectionpoint(batterytrack)feature.NotethattheAGCstill worksatalimiterlevelof6.15V. 2.1.4 GainControl TheTPA2015D1hasthreegainsettings:6dB,15.5dB,and20dB. 1. UsejumperGAINtosetthegainas6dB,15.5dBor20dB.Toachieve6dB,placethejumper betweenheads1and2;for20dB,shuntheads2and3;for15.5dB,removethejumperandletthe gainpinfloat. 2.1.5 ShutdownControls 1. TheTPA2015D1providesindependentshutdowncontrolsfortheClass-Damplifierandtheboost converter.PinsENBandENDenabletheboostconverterandClass-Damplifier,respectively.They areactivehigh.PressandholdpushbuttonS1toplacetheboostconverterinshutdown.Release pushbuttonS1toactivatetheboostconverter.IfEND=HIGH,theboostconverteronlyturnsonifan audiosignal(>1V )ispresentatoneoftheinputs(IN+orIN-). PEAK 2. PressandholdpushbuttonS2toshutdowntheClass-Damplifier.ReleasepushbuttonS2toactivate theClass-Damplifier. 2 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) SLOU264–March2010 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

www.ti.com Operation NOTE: TheboostconverterprovidespowertotheClass-Damplifier.Whentheboostconverteris shutdown,thebypassmodewillbeactiveandtheclass-Damplifierwillbesuppliedbythe connectedexternalvoltagesource. TheTPA2015D1hasanautopassthroughmode.Undernormaloperation(END=ENB= HIGH),theboostconverterwillautomaticallyturnoffifnoaudiosignalispresentatoneof theinputs(IN+orIN-). 2.2 Boost Settings Thedefaultvoltagefortheboostconverteris5.5Vandcannotbechanged.Ifnoaudiosignalispresent, theboostconverterisautomaticallydisabled.OncetheaudiosignalispresentatIN+andIN-,theboost converterenablesautomatically. 2.2.1 BoostTerms Thefollowingisalistoftermsanddefinitions: C MinimumboostcapacitancerequiredforagivenripplevoltageonPVOUT(PVDD). MIN L Boostinductor f Switchingfrequencyoftheboostconverter. boost I CurrentpulledbytheClass-Damplifierfromtheboostconverter. PVDD IPVDD CurrentpulledbytheClass-Damplifierfromtheboostconverter. I Currentthroughtheboostinductor. L PVDD(PVOUT) SupplyvoltagefortheClass-Damplifier.(Voltagegeneratedbytheboostconverter output) VBAT(VDD) SupplyvoltagetotheTPA2015D1.(SupplyvoltagetotheEVM). ΔI Ripplecurrentthroughtheinductor. L ΔV RipplevoltageonPVOUT(PVDD)duetocapacitance. 2.2.2 ChangingtheBoostInductor Workinginductancedecreasesasinductorcurrentincreases.Ifthedropinworkinginductanceissevere enough,itmaycausetheboostconvertertobecomeunstable,orcausetheTPA2015D1toreachits currentlimitataloweroutputpowerthanexpected.Inductorvendorsspecifycurrentsatwhichinductor valuesdecreasebyaspecificpercentage.Thiscanvaryby10%to35%.Inductanceisalsoaffectedbydc currentandtemperature. Inductorcurrentratingisdeterminedbytherequirementsoftheload.Theinductanceisdeterminedbytwo factors:theminimumvaluerequiredforstabilityandthemaximumripplecurrentpermittedinthe application. UseEquation1todeterminetherequiredcurrentrating.Equation1showstheapproximaterelationship betweentheaverageinductorcurrent,I ,totheloadcurrent,loadvoltage,andinputvoltage(I , L PVDD PVOUT,andVBAT,respectively.)InsertI ,PVDD,andVBATintoEquation1tosolveforI .The PVDD L inductormustmaintainatleast90%ofitsinitialinductancevalueatthiscurrent. æ PVDD ö IL =IPVDD ´ çèVBAT ´ 0.8÷ø (1) Theminimumworkinginductanceis1.3mH.Alowervaluemaycauseinstability. Ripplecurrent,ΔI ,ispeak-to-peakvariationininductorcurrent.Smallerripplecurrentreducescorelosses L intheinductoraswellasthepotentialforEMI.UseEquation2todeterminethevalueoftheinductor,L. Equation2showstherelationshipsamonginductanceL,VBAT,PVDD,theswitchingfrequency,f ,and boost ΔI .InsertthemaximumacceptableripplecurrentintoEquation2tosolveforL. L SLOU264–March2010 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) 3 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

Operation www.ti.com VBAT ´ (PVDD - VBAT) L = ΔI ´ f ´ PVDD L BOOST (2) ΔI isinverselyproportionaltoL.Minimize ΔI asmuchasisnecessaryforaspecificapplication.Increase L L theinductancetoreducetheripplecurrent.Notethatmakingtheinductancetoolargepreventstheboost converterfromrespondingtofastloadchangesproperly.TypicalinductorvaluesfortheTPA2015D1are 2.2mHto4.7 mH. Selectaninductorwithasmalldcresistance,DCR.DCRreducestheoutputpowerduetothevoltage dropacrosstheinductor. 2.2.3 ChangingtheBoostCapacitor Thevalueoftheboostcapacitorisdeterminedbytheminimumvalueofworkingcapacitancerequiredfor stabilityandthemaximumvoltagerippleallowedonPVOUTintheapplication.Theminimumvalueof workingcapacitanceis4.7mF.Donotuseanycomponentwithaworkingcapacitancelessthan4.7 mF. ForX5RorX7Rceramiccapacitors,Equation3showstherelationshipsamongtheboostcapacitance,C, toloadcurrent,loadvoltage,ripplevoltage,inputvoltage,andswitchingfrequency(I ,PVOUT,ΔV, PVOUT VDD,f respectively).InsertthemaximumallowedripplevoltageintoEquation3tosolveforC.Afactor boost ofabout1.5isincludedtoaccountforcapacitancelossduetodcvoltageandtemperature. I ´ (PVDD - VBAT) C =1.5 ´ PVDD DV ´ fBOOST ´ PVDD (3) Foraluminumortantalumcapacitors,Equation4showstherelationshipsamongtheboostcapacitance, C,toloadcurrent,loadvoltage,ripplevoltage,inputvoltage,andswitchingfrequency(I ,PVOUT,ΔV, PVOUT VDD,f respectively).InsertthemaximumallowedripplevoltageintoEquation4tosolveforC.Solve boost thisequationassumingESRiszero. I ´ (PVDD - VBAT) C = PVDD DV ´ fBOOST ´ PVDD (4) Capacitanceofaluminumandtantalumcapacitorsisnormallyinsensitivetoappliedvoltage,sothereisno factorof1.5includedinEquation4.However,theESRinaluminumandtantalumcapacitorscanbe significant.ChooseanaluminumortantalumcapacitorwithanESRaround30mΩ.Forbestperformance withtantalumcapacitors,useatleasta10-Vrating.Notethattantalumcapacitorsmustgenerallybeused atvoltagesofhalftheirratingsorless. 2.3 Power Up 1. VerifythecorrectconnectionsasdescribedinSection2.1 2. Verifythevoltagesettingofthepowersupplyisbetween2.3Vand5.2V,andturnonthepower supply.ProperoperationoftheEVMbegins. 3. Adjusttheaudiosignalsourceasneeded. 4 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) SLOU264–March2010 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

www.ti.com Reference 3 Reference ThissectionincludestheEVMschematic,boardlayoutreference,andpartslist. 3.1 TPA2015D1 EVM Schematic T+ T- U U O O 1C8 4700pfd/50V0603 ND1 ND 1 1C9 4700pfd/50V0603 ND 2 G G 2 G E R712 DNP0603 TPOUT+ WhiteC61JPOUT1211000pfd/50V06032EMCOUTDNPND3 1C7 TPOUT-1000pfd/50V0603White NDR821 DNP0603 ANDOFFHARDWAR 0.5in0.5in0.5in0.5in GNDGNDGNDGND 2 G 2 G T S FB121MPZ2012S101A100ohms/4A0805 FB221MPZ2012S101A100ohms/4A0805 D N C4210603DNPC512080522ufd/6.3V G B1 C1 1A 1D Vdd JPVDD DNP12 GNDL1 12061C3 10ufd/10V2340805AAB ND D3 D2U1WCSP16-YZHB2 B3 D4 C3 442ACC GNDVddR6 21100K0603 12S2GND 2 G VddR521 100K0603 12S1GND V V C112 1.0ufd/16 JPINDNP0603C221 1.0ufd/16 0603 6 1R318K04022 GND 12 C 54 1R227K04022 GND R412 1.00K0603 12 JPSE GND AG 231 1R139K04022 GND 23 1 IN Vdd RCA(Black)AIN1 2 3 GND G Vdd GND 1 1 D D D N V G Figure1.TPA2015D1EVMSchematic SLOU264–March2010 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) 5 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

Reference www.ti.com 3.2 TPA2015D1 EVM PCB Layers PCB EDGE 1 PCB EDGE 11 Top Layer PCB EDGE Bottom Layer Figure2.TPA2015D1EVM–TopandBottomLayers 6 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) SLOU264–March2010 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

www.ti.com Reference 3.3 TPA2015D1 EVM Parts List Table1.TPA2015D1EVMPartsList QTY REFDES Vendorand Manufacturerand Description PartNumber PartNumber SEMICONDUCTORS 1 U1 TEXASINSTRUMENTS TEXASINSTRUMENTS 1.4WCLASS-DAUDIOAMPW/BOOSTAND TPA2015D1YZH TPA2015D1YZH SMARTGAINWCSP16-YZHROHS CAPACITORS 2 C6,C7 DIGI-KEY TDKCORP CAPACITORSMD0603CERM1000pF,50V,5%COG 445-1293-1 C1608C0G1H102J ROHS 1 C8,C9 DIGI-KEY PANASONIC CAPACITORSMD0603CERM4700pF,50V,10%X7R PCC1780CT ECJ-1VB1H472K ROHS 2 C5 DIGI-KEY TAIYOYUDEN CAPACITORSMD0805CERM22mF,10V,20%X5R 587-1958-1-ND LMK212BJ226MG-T ROHS 2 C3 DIGI-KEY MURATA CAPACITORSMD0805CERM10mF,10V,10%X7R 490-3905-1 GRM21BR71A106KE51L ROHS 2 C1,C2 DIGI-KEY TAIYOYUDEN CAPACITORSMD0603CERM1.0mF,16V,10%X7R 587-1241-1 EMK107B7105KA-T(1) ROHS RESISTORSANDINDUCTORS 2 R5,R6 DIGI-KEY PANASONIC RESISTORSMD0603THICKFILM100kΩ,5%, P100KGCT ERJ-3GEYJ104V 1/10WROHS 1 R4 DIGI-KEY YAGEO RESISTORSMD0603THICKFILM1.00kΩ,1%, 311-1.00KHRCT RC0603FR-071KL 1/10WROHS 1 R1 DIGI-KEY YAGEO RESISTORSMD0402THICKFILM39kΩ,5%, P39KJCT-ND ERJ-2GEJ393 1/16W 1 R3 DIGI-KEY TAGEO RESISTORSMD0402THICKFILM18kΩ,5%, P18KJCT-ND ERJ-2GEJ183 1/16W 1 R2 DIGI-KEY YAGEO RESISTORSMD0402THICKFILM27kΩ,5%, P27KJCT-ND ERJ-2GEJ273 1/16W 1 L1 NEWARK MURATA INDUCTOR2.2mH,20%,1300mA,1008 490-5114-1-ND LQM2HPN2R2MG0L 2 FB1,FB2 DIGI-KEY TDK FERRITEBEADSMD0805100Ohms4A,100MHz, 445-1567-1 MPZ2012S101A ROHS HEADERSANDJACKS 2 GAIN, DIGI-KEY NORCOMP HEADER3PIN,PCB2.0mmROHS JPOUT 2663S-03 26630301RP2 4 JPIN,JPSE, DIGI-KEY NORCOMP HEADER2PIN,PCB2.0mmROHS JPVDD, 2663S-02 26630201RP2 EMCOUT 1 AGC DIGI-KEY NORCOMP HEADER2x3PINPCB-RA2.0mmROHS 2764R-03 27640602RP2 1 IN NEWARK SWITCHCRAFT JACK,RCA3-PINPCB-RABLACKROHS 65K7770 PJRAN1X1U01X TESTPOINTS,SWITCHES,ANDTRIMPOT 2 TPOUT+, DIGI-KEY KEYSTONE PCTESTPOINT,WHITE,ROHS TPOUT– 5002K ELECTRONICS 5002 2 S1 DIGI-KEY E-SWITCH SWITCH,MOM,160GSMT4x3mmROHS EG4344CT TL1015AF160QG 8 GAIN, DIGI-KEY NORCOMPINC. SHUNT,BLACKAuFLASH2mmLS JPOUT, SP2-001E 810-002-SP2L001 JPIN,JPSE, JPVDD,EMC OUT,AGC (1) Donotsubstituteparts SLOU264–March2010 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) 7 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

Reference www.ti.com Table1.TPA2015D1EVMPartsList (continued) QTY REFDES Vendorand Manufacturerand Description PartNumber PartNumber BINDINGPOSTS 4 GND,VDD, DIGI-KEY EMERSONNPCS BINDING-POST,NONINSULATED,THRU,ROHS OUT+,OUT– J587 111-2223-001 STANDOFFSANDHARDWARE 4 HW1,HW2, DIGI-KEY KEYSTONE STANDOFF,4-400.5IN3/16INDIAALUMRNDF-F HW3,HW4 2027K 2027 4 HW1,HW2, DIGI-KEY BUILDINGFASTENERS 4-40SCREW,STEEL0.250IN HW3,HW4 H342 PMS4400025PH COMPONENTSNOTASSEMBLED R7,R8,C4 8 TPA2015D1AudioPowerAmplifierEvaluationModule(EVM) SLOU264–March2010 SubmitDocumentationFeedback Copyright©2010,TexasInstrumentsIncorporated

EVALUATIONBOARD/KITIMPORTANTNOTICE TexasInstruments(TI)providestheenclosedproduct(s)underthefollowingconditions: Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSES ONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.Personshandlingtheproduct(s)musthave electronicstrainingandobservegoodengineeringpracticestandards.Assuch,thegoodsbeingprovidedarenotintendedtobecomplete intermsofrequireddesign-,marketing-,and/ormanufacturing-relatedprotectiveconsiderations,includingproductsafetyandenvironmental measurestypicallyfoundinendproductsthatincorporatesuchsemiconductorcomponentsorcircuitboards.Thisevaluationboard/kitdoes notfallwithinthescopeoftheEuropeanUniondirectivesregardingelectromagneticcompatibility,restrictedsubstances(RoHS),recycling (WEEE),FCC,CEorUL,andthereforemaynotmeetthetechnicalrequirementsofthesedirectivesorotherrelateddirectives. Shouldthisevaluationboard/kitnotmeetthespecificationsindicatedintheUser’sGuide,theboard/kitmaybereturnedwithin30daysfrom thedateofdeliveryforafullrefund.THEFOREGOINGWARRANTYISTHEEXCLUSIVEWARRANTYMADEBYSELLERTOBUYER ANDISINLIEUOFALLOTHERWARRANTIES,EXPRESSED,IMPLIED,ORSTATUTORY,INCLUDINGANYWARRANTYOF MERCHANTABILITYORFITNESSFORANYPARTICULARPURPOSE. Theuserassumesallresponsibilityandliabilityforproperandsafehandlingofthegoods.Further,theuserindemnifiesTIfromallclaims arisingfromthehandlingoruseofthegoods.Duetotheopenconstructionoftheproduct,itistheuser’sresponsibilitytotakeanyandall appropriateprecautionswithregardtoelectrostaticdischarge. EXCEPTTOTHEEXTENTOFTHEINDEMNITYSETFORTHABOVE,NEITHERPARTYSHALLBELIABLETOTHEOTHERFORANY INDIRECT,SPECIAL,INCIDENTAL,ORCONSEQUENTIALDAMAGES. TIcurrentlydealswithavarietyofcustomersforproducts,andthereforeourarrangementwiththeuserisnotexclusive. TIassumesnoliabilityforapplicationsassistance,customerproductdesign,softwareperformance,orinfringementofpatentsor servicesdescribedherein. PleasereadtheUser’sGuideand,specifically,theWarningsandRestrictionsnoticeintheUser’sGuidepriortohandlingtheproduct.This noticecontainsimportantsafetyinformationabouttemperaturesandvoltages.ForadditionalinformationonTI’senvironmentaland/or safetyprograms,pleasecontacttheTIapplicationengineerorvisitwww.ti.com/esh. NolicenseisgrantedunderanypatentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoanymachine,process,or combinationinwhichsuchTIproductsorservicesmightbeorareused. FCCWarning Thisevaluationboard/kitisintendedforuseforENGINEERINGDEVELOPMENT,DEMONSTRATION,OREVALUATIONPURPOSES ONLYandisnotconsideredbyTItobeafinishedend-productfitforgeneralconsumeruse.Itgenerates,uses,andcanradiateradio frequencyenergyandhasnotbeentestedforcompliancewiththelimitsofcomputingdevicespursuanttopart15ofFCCrules,whichare designedtoprovidereasonableprotectionagainstradiofrequencyinterference.Operationofthisequipmentinotherenvironmentsmay causeinterferencewithradiocommunications,inwhichcasetheuserathisownexpensewillberequiredtotakewhatevermeasuresmay berequiredtocorrectthisinterference. EVMWARNINGSANDRESTRICTIONS ItisimportanttooperatethisEVMwithintheinputvoltagerangeof-0.3Vto6Vandtheoutputvoltagerangeof-0.3VtoVDD+0.3. Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/orirreversibledamagetotheEVM.Iftherearequestions concerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower. Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossiblepermanentdamagetotheEVM. PleaseconsulttheEVMUser'sGuidepriortoconnectinganyloadtotheEVMoutput.Ifthereisuncertaintyastotheloadspecification, pleasecontactaTIfieldrepresentative. Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan85°C.TheEVMisdesignedtooperate properlywithcertaincomponentsabove85°Caslongastheinputandoutputrangesaremaintained.Thesecomponentsincludebutare notlimitedtolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.Thesetypesofdevicescanbeidentified usingtheEVMschematiclocatedintheEVMUser'sGuide.Whenplacingmeasurementprobesnearthesedevicesduringoperation, pleasebeawarethatthesedevicesmaybeverywarmtothetouch. MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265 Copyright©2010,TexasInstrumentsIncorporated

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