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User's Guide SLVU670A –March 2012–RevisedMay 2012 TPS62090EVM-063 EvaluationModule Thisuser’s guidedescribestheTPS62090 evaluationmodule (EVM) and how toperforma stand-alone evaluationorinterfacewitha hostorsystem.The TPS62090 isa step-downconverterthatoperateswith an inputvoltagebetween 2.5V and 6 Vdc, an outputvoltageof1.8V usingexternalresistors,and can deliverup to3000 mA ofcontinuouscurrent.The converterhas a programmable soft-start,a power-out good status,and severalothersafetyfeatures.See thedatasheetforthecompletedescription.
Contents
1SLVU670A –March 2012–RevisedMay 2012 TPS62090EVM-063 EvaluationModule SubmitDocumentationFeedback Copyright© 2012,Texas InstrumentsIncorporated
Introduction www.ti.com
1 Introduction
The TPS62090 devicefamilyisa high-frequencysynchronousstepdown converteroptimizedforsmall solutionsize,highefficiencyand issuitableforbattery-poweredapplications.To maximizeefficiency,the converteroperatesinPWM mode witha nominalswitchingfrequencyof2.8MHz/1.4MHz and automaticallyentersPower Save Mode operationatlight-loadcurrents.When used indistributedpower suppliesand point-of-loadregulation,thedeviceallowsvoltagetrackingtoothervoltagerailsand tolerates capacitorsrangingfrom22 µF up to100 µF.UsingtheDCS Control™ topology,thedeviceachieves excellentloadtransientperformanceand accurateoutputvoltageregulation.The deviceisavailablein3 x 3-mm, 16-pinpackage withthermalpad.
2 ConsiderationsWhen EvaluatingtheTPS62090
The TPS62090 can be programmed fora switchingfrequencyof2.8MHz/1.4MHz by JP2.The higher switchingfrequencyreducestheripplecurrentand voltage.IftheLC filterisadjusted,notethatthe inductorminimum valueis1 µH forthe1.4-MHz settingand 0.47µH forthe2.8-MHz setting.The EVM was builtwitha 1-µH inductorand a 22-µF outputcapacitor.The integratedcircuit(IC)has a two-stage inputcurrentlimitthatsetstheinitialcurrentlimittoone third(approximately1.55A) ofthenormalpeak currentlimitofapproximately4.6A,when theoutputislessthan0.6V.Most systemloadsdo notbecome enabledoractiveuntiltheoutputhas reached0.8V,whichisaftertheinitialstart-upcurrentlimit.Ifa low- resistanceloadisused (lessthanapproximately1 Ω),thepartcan getstuckinshort-circuitmode during power up.Thus,veryheavy loadsmay have tobe appliedafterpower up ortheusercan placean N-CH logiclevelFET inserieswiththeresistor(drainconnectedtogroundsideofresistor,sourceconnectedto groundand gatetiedtothedrain).Once theoutputreachesapproximately1 V,theloadturnson.
3 TestSummary
The TPS62090EVM-063 boardrequiresan adjustabledc power supplywithup toa 6-V outputand ≥ 2.5 A forpoweringtheinputtotheEVM and a resistiveoutputloadbetween 1 kΩ and 0.6Ω.Choose the properpower ratingfortheloadresistor,P = V2 /R. Use atleast2x thecalculatedpower dissipation.The testsetupconnectionsand jumpersettingsselectionsareconfiguredfora stand-aloneevaluation,butcan be changed tointerfacewithexternalhardwaresuch as a systemloadand microcontroller.
3.1 Equipment
- Adjustabledc power supplybetween 2.5V and 6 V withadjustablecurrentlimitsettoapproximately 2.5A
- Load:System load,resistiveloadof2 Ω,3 W, and 25 Ω
- ThreeFluke75 digitalmultimeters(DMM); (equivalentorbetter)
- Oscilloscope,model TDS222 (equivalentorbetter)
3.2 Equipment and EVM Setup
Table1 shows thesetupinput/outputconnectionsand configurationoftheTPS62090 evaluationmodule. The silkscreenlabelsappearinparentheses. Table1.Setup I/OConnections and ConfigurationforTPS62090EVM Evaluation Jack/Component (SilkScreen) Connect or Adjustment to: J1-1/2(Vin) P/S positivelead,presetto4.5Vdc;2.5-ACurrentLimit J2-1(+SNS); InputPositiveleadofDMM #1 J2-2(– SNS); InputNegativeleadofDMM #1 J3-1/2(GND) P/S negativelead. J5-1/2(Vout) Positiveleadtosystemloadorloadresistance J6-1(+SNS); OutputPositiveleadofDMM #2 J6-2(– SNS); OutputNegativeleadofDMM #2 J7-1/2(GND) Negativeleadtosystemloadorloadresistance J4-1(PG) PositiveleadofDMM #3 DCS Controlisa trademarkofTexas Instruments.
2 TPS62090EVM-063 EvaluationModule SLVU670A –March 2012–RevisedMay 2012
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4.5 VDC Output Load Input P/S#1 www.ti.com TestSummary Table1.Setup I/OConnections and ConfigurationforTPS62090EVM Evaluation(continued) Jack/Component (SilkScreen) Connect or Adjustment to: J4-2(GND) NegativeleadofDMM #3 JP1-1/2(ON) ApplyshunttoON forconverteroperation JP1-2/3(OFF) JP2-1/2(1.4MHz) Applyshuntto1.4MHz JP1-2/3(2.8MHz) Connectthemeters,scope probes(seeFigure1),2-Ω outputload,shuntjumpers,and inputpower supply (Table1);settheoscilloscopeto200 ns/div,positivetriggerorHF triggeron CH2; CH1: ac-coupled,50 mV/div;CH2: dc-coupled,2 V/div;CH3: ac-coupled,10 mV/div;CH4: dc-coupled,10 V/div.Userscan replaceresistiveloadwithsystemloadordecade loadbox tovaryload(2-Ω to25-Ω load). Figure1.EVM Schematic and EvaluationSetup
3.3 TestProcedure
- Setup theEVM isaccordingtoTable1 and Figure1,and presetthepower supplyto4.5Vdc at approximately2.5-Acurrentlimit. 2. Turnon inputsupply,and verifythattheinputvoltageisapproximately4.5Vdc (DMM#1) and the outputvoltageisatapproximately1.8Vdc (DMM#2). 3. RefertoFigure2,and verifythatthedutycycleisnear40%, inputrippleislessthan50 mVpp (ignoringswitchingspikes)and theoutputrippleislessthan10 mVpp. These waveformswere taken withhigh-frequencyprobes(meaningthatthegroundleadwas short(approximately1 cm).This reducesthehigh-frequencyspikesthatthegroundloopon theprobepicksup. 4. Varyinputvoltagebetween 2.6V and 5.5V,and observethechange indutycycleand ripple waveforms.SetVinback to4.5Vdc. 5. Move JP2 From:1.4MHz to2.8MHz. Verifythatthechange isswitchingfrequencyas shown in Figure3.ReturntheJP2 shuntback tothe1.4-MHz setting. 6. Change theoutputloadto25 Ω,setCH3 to50mV/div,and verifyhow thedutycyclechanges intoa burstlow-powermode as seen inFigure4.Attheend oftheburstswitching,theinductor’s current goes tozero,becomes discontinuous,and ringswiththeFET and outputcapacitance(normal operationatlightloads).Settheloadback toapproximately2 Ω. 7. Turnofftheinputsupply.SetCH1 todc coupled,2 V/div;setCH3 todc coupled,1 V/div;CH4 todc coupled,5 V/div;setoscilloscopetimingto500 µs/div,setscope triggertopositiveorHF triggeron CH1, and arm oscilloscope.Turnon laboratorysupply.The laboratorysupplyused tocaptureFigure5 3SLVU670A –March 2012–RevisedMay 2012 TPS62090EVM-063 EvaluationModule SubmitDocumentationFeedback Copyright© 2012,Texas InstrumentsIncorporated
Vin_ac Vsw Vout Time - 200 ns/div Waveforms www.ti.com ramped up over3 ms. Figure6 isa hotplugpower up.The outputramp rateisthesame inboth figuresdue tothecontrolledsoft-start.The outputcan be programmed totrackanothervoltageby use ofthesoft-startpin.See thedatasheetformore details. 8. Move CH1 toJP1-2(Enablepin),and setJP1 shunttooff.Arm thescope and remove JP1 shunt. Figure7 shows thepower-upoftheconverterviatheenablepin. 9. Setthescope triggertonegative,arm theoscilloscope,and applya shunton JP1-OFF. See Figure8 forthepower-down sequence. 10.Withan understandingofthebasicfunctionsoftheEVM, usersmay want tointegratetheEVM into theirsystemusingshort,twistedwires,tominimizeconnectionimpedances.
4 Waveforms
4.5Vinput,1.8Voutput,1.4MHz Switching;CH1: InputRipple,CH2: SwitchingNode, CH3: OutputRipple Figure2.TypicalSwitchingWaveforms
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Vin_ac Vsw Vout Time - 200 ns/div Vin_ac Vsw Vout_ac Time - 2 s/div/c109 www.ti.com Waveforms 4.5Vinput,1.8Voutput,2.8MHz Switching;CH1: InputRipple,CH2: SwitchingNode, CH3: OutputRipple Figure3.TypicalSwitchingWaveforms Figure4.Low-Power Mode, 25-Ω Load – Shows BurstLow-Power Mode 5SLVU670A –March 2012–RevisedMay 2012 TPS62090EVM-063 EvaluationModule SubmitDocumentationFeedback Copyright© 2012,Texas InstrumentsIncorporated
Vin_ac Vsw Vout Time - 500 s/div/c109 Vpg Vin_ac Vsw Vout Waveforms www.ti.com Figure5.Power Up by Powering LaboratorySupply Connected toVin Figure6.Power Up by Hot PluggingVin
6 TPS62090EVM-063 EvaluationModule SLVU670A –March 2012–RevisedMay 2012
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www.ti.com Waveforms Figure7.Power Up by Enable Pin PulledHigh Figure8.Power Down by Enable PulledLow 7SLVU670A –March 2012–RevisedMay 2012 TPS62090EVM-063 EvaluationModule SubmitDocumentationFeedback Copyright© 2012,Texas InstrumentsIncorporated
See BOM for part usageNot Installed 2.8MHz1.4MHz S -S +VOUTGND FREQ VIN 2.3V to 6V GND1.8V, 1.2A max TP1 1 2 1 2 JP1 C1 22uF L1 1.0 uH C5 10nF 1 2 1 2 47uF JP2 1 2 1 2 1 2 C4 10nF R2 158k R3 500k R4 1.00M R1 200k SW SW FREQ PG FB AGND CP CN SS AVIN PVIN PVIN EN PGND PGND VOS AGND TPS6209xRGT C2 22uF Schematic,Printed-CircuitBoard,and BillofMaterials www.ti.com
5 Schematic,Printed-CircuitBoard,and BillofMaterials
5.1 Schematic
8 TPS62090EVM-063 EvaluationModule SLVU670A –March 2012–RevisedMay 2012
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www.ti.com Schematic,Printed-CircuitBoard,and BillofMaterials
5.2 Printed-CircuitBoard Layouts
Figure9.Assembly Layer Figure10.Top Layer 9SLVU670A –March 2012–RevisedMay 2012 TPS62090EVM-063 EvaluationModule SubmitDocumentationFeedback Copyright© 2012,Texas InstrumentsIncorporated
Schematic,Printed-CircuitBoard,and BillofMaterials www.ti.com Figure11.Bottom Layer
5.3 BillofMaterials
Table2.PWR063A BillofMaterials Count -001 RefDes Value Description Size PartNumber MFR
2 C1-2 22µF Capacitor,CeramicChip,10V,X5R, 10% 0805 STD STD
1 C3 47µF Capacitor,Tantalum,8V,35milliohm,20% 3528(B) T520B476M008ATE035 Kemet
2 C4-5 10nF Capacitor,Ceramic,25V,X5R, 10% 0603 Std Std
0 C6-7 open Capacitor,Ceramic 1210 Std Std
0 C8 open Capacitor,Ceramic 0805 Std Std
0 C9 Capacitor,Ceramic,50V,C0G, 5% 0603 Std Std
7 J1-7 PEC02SAAN Header,Male 2-pin,100milspacing 0.100inchx 2 PEC02SAAN Sullins 2 JP1-2 PEC03SAAN Header,3 pin,100milspacing 0.100x 3 PEC03SAAN Sullins 1 L1 1 µH Inductor,Power,4.5A,±20% 0.157x 0.157inch XFL4020-102ML Coilcraft
1 R1 200k Resistor,Chip,1/16W,1% 0603 Std Std
1 R2 158k Resistor,Chip,1/16W,1% 0603 Std Std
1 R3 500k Resistor,Chip,1/16W,1% 0603 Std Std
1 R4 1.00M Resistor,Chip,1/16W,1% 0603 Std Std 0 TP1 STD TestPoint,O.032 Hole 0.032 Std Std
1 U1 TPS62090RGT IC,3A HighEfficientSynchronousStepDown QFN-16 TPS62090RGT TI
2 -- -- Shunt,100-mil,Black 0.100 929950-00 3M 1 -- -- PCB 1.8x 1.8x 0.031inch PWR063 Any 1 -- -- Label 1.25x 0.25inch THT-13-457-10 Brady
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EVALUATION BOARD/KIT/MODULE (EVM) ADDITIONAL TERMS Texas Instruments(TI)providestheenclosedEvaluationBoard/Kit/Module(EVM) underthefollowingconditions: The userassumes allresponsibilityand liabilityforproperand safehandlingofthegoods.Further,theuserindemnifiesTIfromallclaims arisingfromthehandlingoruse ofthegoods. Shouldthisevaluationboard/kitnotmeet thespecificationsindicatedintheUser’s Guide,theboard/kitmay be returnedwithin30 days from thedateofdeliveryfora fullrefund.THE FOREGOING LIMITED WARRANTY ISTHE EXCLUSIVE WARRANTY MADE BY SELLER TO BUYER AND ISIN LIEU OF ALL OTHER WARRANTIES, EXPRESSED, IMPLIED,OR STATUTORY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR ANY PARTICULAR PURPOSE. EXCEPT TO THE EXTENT OF THE INDEMNITY SET FORTH ABOVE, NEITHER PARTY SHALL BE LIABLE TO THE OTHER FOR ANY INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES. PleasereadtheUser's Guide and,specifically,theWarningsand RestrictionsnoticeintheUser's Guide priortohandlingtheproduct.This noticecontainsimportantsafetyinformationabouttemperaturesand voltages.Foradditionalinformationon TI's environmentaland/orsafety programs,pleasevisitwww.ti.com/eshorcontactTI. No licenseisgrantedunderany patentrightorotherintellectualpropertyrightofTIcoveringorrelatingtoany machine,process,or combinationinwhichsuch TIproductsorservicesmightbe orareused.TIcurrentlydealswitha varietyofcustomersforproducts,and thereforeourarrangementwiththeuserisnotexclusive.TIassumes no liabilityforapplicationsassistance,customerproductdesign, softwareperformance,orinfringementofpatentsorservicesdescribedherein. REGULATORY COMPLIANCE INFORMATION As notedintheEVM User’s Guide and/orEVM itself,thisEVM and/oraccompanyinghardwaremay ormay notbe subjecttotheFederal CommunicationsCommission (FCC) and IndustryCanada (IC)rules. ForEVMs not subjecttotheabove rules,thisevaluationboard/kit/moduleisintendedforuse forENGINEERING DEVELOPMENT, DEMONSTRATION OR EVALUATION PURPOSES ONLY and isnotconsideredby TItobe a finishedend productfitforgeneralconsumer use.Itgenerates,uses,and can radiateradiofrequencyenergyand has notbeen testedforcompliancewiththelimitsofcomputing devicespursuanttopart15 ofFCC orICES-003 rules,whicharedesignedtoprovidereasonableprotectionagainstradiofrequency interference.Operationoftheequipmentmay cause interferencewithradiocommunications,inwhichcase theuserathisown expense will be requiredtotakewhatevermeasures may be requiredtocorrectthisinterference. GeneralStatementforEVMs includinga radio User Power/FrequencyUse Obligations:Thisradioisintendedfordevelopment/professionaluse onlyinlegallyallocatedfrequencyand power limits.Any use ofradiofrequenciesand/orpower availabilityofthisEVM and itsdevelopmentapplication(s)must complywithlocal lawsgoverningradiospectrumallocationand power limitsforthisevaluationmodule.Itistheuser’s soleresponsibilitytoonlyoperatethis radioinlegallyacceptablefrequencyspace and withinlegallymandated power limitations.Any exceptionstothisarestrictlyprohibitedand unauthorizedby Texas Instrumentsunlessuserhas obtainedappropriateexperimental/developmentlicensesfromlocalregulatory authorities,whichisresponsibilityofuserincludingitsacceptableauthorization. For EVMs annotatedas FCC – FEDERAL COMMUNICATIONS COMMISSION Part15 Compliant Caution Thisdevicecomplieswithpart15 oftheFCC Rules.Operationissubjecttothefollowingtwo conditions:(1)Thisdevicemay notcause harmfulinterference,and (2)thisdevicemust acceptany interferencereceived,includinginterferencethatmay cause undesiredoperation. Changes ormodificationsnotexpresslyapprovedby thepartyresponsibleforcompliancecouldvoidtheuser's authoritytooperatethe equipment. FCC InterferenceStatementforClass A EVM devices Thisequipmenthas been testedand foundtocomplywiththelimitsfora ClassA digitaldevice,pursuanttopart15 oftheFCC Rules. These limitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferencewhen theequipmentisoperatedina commercial environment.Thisequipmentgenerates,uses,and can radiateradiofrequencyenergyand,ifnotinstalledand used inaccordancewiththe instructionmanual,may cause harmfulinterferencetoradiocommunications.Operationofthisequipmentina residentialareaislikelyto cause harmfulinterferenceinwhichcase theuserwillbe requiredtocorrecttheinterferenceathisown expense.
FCC InterferenceStatementforClass B EVM devices Thisequipmenthas been testedand foundtocomplywiththelimitsfora ClassB digitaldevice,pursuanttopart15 oftheFCC Rules. These limitsaredesignedtoprovidereasonableprotectionagainstharmfulinterferenceina residentialinstallation.Thisequipment generates,uses and can radiateradiofrequencyenergyand,ifnotinstalledand used inaccordancewiththeinstructions,may cause harmfulinterferencetoradiocommunications.However,thereisno guaranteethatinterferencewillnotoccurina particularinstallation.If thisequipmentdoes cause harmfulinterferencetoradioortelevisionreception,whichcan be determinedby turningtheequipmentoffand on,theuserisencouragedtotrytocorrecttheinterferenceby one ormore ofthefollowingmeasures:
- Reorientorrelocatethereceivingantenna.
- Increasetheseparationbetween theequipmentand receiver.
- Connecttheequipmentintoan outleton a circuitdifferentfromthattowhichthereceiverisconnected.
- Consultthedealeroran experiencedradio/TVtechnicianforhelp. For EVMs annotatedas IC – INDUSTRY CANADA Compliant ThisClassA orB digitalapparatuscomplieswithCanadianICES-003. Changes ormodificationsnotexpresslyapprovedby thepartyresponsibleforcompliancecouldvoidtheuser’s authoritytooperatethe equipment. Concerning EVMs includingradiotransmitters ThisdevicecomplieswithIndustryCanada licence-exemptRSS standard(s).Operationissubjecttothefollowingtwo conditions:(1)this devicemay notcause interference,and (2)thisdevicemust acceptany interference,includinginterferencethatmay cause undesired operationofthedevice. Concerning EVMs includingdetachableantennas Under IndustryCanada regulations,thisradiotransmittermay onlyoperateusingan antennaofa typeand maximum (orlesser)gain approvedforthetransmitterby IndustryCanada. To reducepotentialradiointerferencetootherusers,theantennatypeand itsgainshould Thisradiotransmitterhas been approvedby IndustryCanada tooperatewiththeantennatypeslistedintheuserguidewiththemaximum permissiblegainand requiredantennaimpedance foreach antennatypeindicated.Antennatypesnotincludedinthislist,havinga gain greaterthanthemaximum gainindicatedforthattype,arestrictlyprohibitedforuse withthisdevice. Cet appareilnum ériquede laclasseA ou B estconformeà lanorme NMB-003 du Canada. Les changements ou lesmodificationspas expressément approuvés parlapartieresponsablede laconformité ontpu viderl’autorité de l'utilisateurpouractionnerl'équipement. Concernant lesEVMs avec appareilsradio Le présentappareilestconformeaux CNR d'IndustrieCanada applicablesaux appareilsradioexempts de licence.L'exploitationest autorisée aux deux conditionssuivantes:(1)l'appareilne doitpas produirede brouillage,et(2)l'utilisateurde l'appareildoitacceptertout brouillageradioélectriquesubi,m ême silebrouillageestsusceptibled'en compromettrelefonctionnement. Concernant lesEVMs avec antennes détachables Conformément à laréglementationd'IndustrieCanada, leprésentémetteurradiopeutfonctionneravec une antenned'un typeetd'un gain maximal(ouinférieur)approuvé pourl'émetteurparIndustrieCanada. Dans lebutde réduirelesrisquesde brouillageradioélectriqueà l'intentiondes autresutilisateurs,ilfautchoisirletyped'antenneetson gainde sorteque lapuissanceisotroperayonnée équivalente Le présentémetteurradioa été approuvé parIndustrieCanada pourfonctionneravec lestypesd'antenneénum érés dans lemanuel d’usage etayantun gainadmissiblemaximaletl'impédance requisepourchaque typed'antenne.Les typesd'antennenon inclusdans cetteliste,ou dontlegainestsupérieurau gainmaximalindiqué,sontstrictementinterditspourl'exploitationde l'émetteur. SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER
【【ImportantNoticeforUsers ofthisProduct inJapan】】 Thisdevelopment kitisNOT certifiedas ConfirmingtoTechnicalRegulationsofRadio Law ofJapan Ifyou use thisproductinJapan,you arerequiredby RadioLaw ofJapan tofollowtheinstructionsbelowwithrespecttothisproduct: 1. Use thisproductina shieldedroom orany othertestfacilityas definedinthenotification#173 issuedby MinistryofInternalAffairsand Communicationson March 28,2006,based on Sub-section1.1ofArticle6 oftheMinistry’s RuleforEnforcementofRadioLaw of Japan, 2. Use thisproductonlyafteryou obtainedthelicenseofTestRadioStationas providedinRadioLaw ofJapan withrespecttothis product,or 3. Use ofthisproductonlyafteryou obtainedtheTechnicalRegulationsConformityCertificationas providedinRadioLaw ofJapan with respecttothisproduct.Also,pleasedo nottransferthisproduct,unlessyou givethesame noticeabove tothetransferee.Pleasenote thatifyou couldnotfollowtheinstructionsabove,you willbe subjecttopenaltiesofRadioLaw ofJapan. Texas InstrumentsJapan Limited (address)24-1,Nishi-Shinjuku6 chome, Shinjuku-ku,Tokyo, Japan http://www.tij.co.jp 【ご使用にあたっての注】 本開発キットは技術基準適合証明を受けておりません。 本製品のご使用に際しては、電波法遵守のため、以下のいずれかの措置を取っていただく必要がありますのでご注意ください。 1. 電波法施行規則第6条第1項第1号に基づく平成18年3月28日総務省告示第173号で定められた電波暗室等の試験設備でご使用いただく。 2. 実験局の免許を取得後ご使用いただく。 3. 技術基準適合証明を取得後ご使用いただく。 なお、本製品は、上記の「ご使用にあたっての注意」を譲渡先、移転先に通知しない限り、譲渡、移転できないものとします。 上記を遵守頂けない場合は、電波法の罰則が適用される可能性があることをご留意ください。 日本テキサス・インスツルメンツ株式会社 東京都新宿区西新宿６丁目２４番１号 西新宿三井ビル http://www.tij.co.jp SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER SPACER
EVALUATION BOARD/KIT/MODULE (EVM) WARNINGS, RESTRICTIONS AND DISCLAIMERS For FeasibilityEvaluationOnly,inLaboratory/DevelopmentEnvironments.Unlessotherwiseindicated,thisEVM isnota finished electricalequipmentand notintendedforconsumer use.Itisintendedsolelyforuse forpreliminaryfeasibilityevaluationin laboratory/developmentenvironmentsby technicallyqualifiedelectronicsexpertswho arefamiliarwiththedangersand applicationrisks associatedwithhandlingelectricalmechanicalcomponents,systemsand subsystems.Itshouldnotbe used as allorpartofa finishedend product. Your SoleResponsibilityand Risk.You acknowledge,representand agreethat: 1. You have uniqueknowledgeconcerningFederal,Stateand localregulatoryrequirements(includingbutnotlimitedtoFood and Drug Administrationregulations,ifapplicable)whichrelatetoyourproductsand whichrelatetoyouruse (and/orthatofyouremployees, affiliates,contractorsordesignees)oftheEVM forevaluation,testingand otherpurposes. 2. You have fulland exclusiveresponsibilitytoassurethesafetyand complianceofyourproductswithallsuch lawsand otherapplicable regulatoryrequirements,and alsotoassurethesafetyofany activitiestobe conductedby you and/oryouremployees,affiliates, contractorsordesignees,usingtheEVM. Further,you areresponsibletoassurethatany interfaces(electronicand/ormechanical) between theEVM and any human body aredesignedwithsuitableisolationand means tosafelylimitaccessibleleakagecurrentsto minimizetheriskofelectricalshockhazard. 3. You willemploy reasonablesafeguardstoensurethatyouruse oftheEVM willnotresultinany propertydamage, injuryordeath,even iftheEVM shouldfailtoperformas describedorexpected. 4. You willtakecareofproperdisposaland recyclingoftheEVM ’s electroniccomponents and packingmaterials. CertainInstructions.ItisimportanttooperatethisEVM withinTI’s recommended specificationsand environmentalconsiderationsperthe userguidelines.ExceedingthespecifiedEVM ratings(includingbutnotlimitedtoinputand outputvoltage,current,power,and environmentalranges)may cause propertydamage, personalinjuryordeath.Iftherearequestionsconcerningtheseratingspleasecontact a TIfieldrepresentativepriortoconnectinginterfaceelectronicsincludinginputpower and intendedloads.Any loadsappliedoutsideofthe specifiedoutputrangemay resultinunintendedand/orinaccurateoperationand/orpossiblepermanentdamage totheEVM and/or interfaceelectronics.PleaseconsulttheEVM User's Guide priortoconnectingany loadtotheEVM output.Ifthereisuncertaintyas tothe loadspecification,pleasecontacta TIfieldrepresentative.Duringnormaloperation,some circuitcomponents may have case temperatures greaterthan60°C as longas theinputand outputaremaintainedata normalambientoperatingtemperature.These components include butarenotlimitedtolinearregulators,switchingtransistors,pass transistors,and currentsense resistorswhichcan be identifiedusingthe EVM schematiclocatedintheEVM User's Guide.When placingmeasurement probesnearthesedevicesduringnormaloperation,please be aware thatthesedevicesmay be verywarm tothetouch.As withallelectronicevaluationtools,onlyqualifiedpersonnelknowledgeable inelectronicmeasurement and diagnosticsnormallyfoundindevelopmentenvironmentsshoulduse theseEVMs. Agreement toDefend,Indemnifyand Hold Harmless.You agreetodefend,indemnifyand holdTI,itslicensorsand theirrepresentatives harmlessfromand againstany and allclaims,damages, losses,expenses,costsand liabilities(collectively,"Claims")arisingoutoforin connectionwithany use oftheEVM thatisnotinaccordancewiththetermsoftheagreement.ThisobligationshallapplywhetherClaims ariseunderlawoftortorcontractorany otherlegaltheory,and even iftheEVM failstoperformas describedorexpected. Safety-Criticalor Life-CriticalApplications.Ifyou intendtoevaluatethecomponents forpossibleuse insafetycriticalapplications(such as lifesupport)where a failureoftheTIproductwouldreasonablybe expectedtocause severepersonalinjuryordeath,such as devices whichareclassifiedas FDA ClassIIIorsimilarclassification,thenyou must specificallynotifyTIofsuch intentand enterintoa separate Assuranceand IndemnityAgreement. MailingAddress:Texas Instruments,PostOfficeBox 655303,Dallas,Texas 75265 Copyright© 2012,Texas InstrumentsIncorporated
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