User's Guide SLUU353–June2009 bq20z65EVM-001 SBS 1.1 Impedance Track™ Technology Enabled Battery Management Solution Evaluation Module This evaluation module (EVM) is a complete evaluation system for the bq20z65/bq29412 battery management system. The EVM includes one bq20z65/bq29412 circuit module and a link to Windows™-based PC software. The circuit module includes one bq20z65 integrated circuit (IC), one bq29412 IC, and all other onboard components necessary to monitor and predict capacity, perform cell balancing, monitor critical parameters, protect the cells from overcharge, over-discharge, short-circuit, and overcurrentin2-,3-or4-seriescellLi-ionorLi-polymerbatterypacks.Thecircuit module connects directly across the cells in a battery. With the EV2300 interface board and software, the user can read the bq20z65 data registers, program the chipset for different pack configurations, log cycling data for further evaluation, and evaluate the overall functionality of the bq20z65/bq29412 solution under different charge anddischargeconditions. Contents 1 Features....................................................................................................................... 2 2 bq20z65-BasedCircuitModule............................................................................................ 2 3 bq20z65CircuitModuleSchematic....................................................................................... 3 4 CircuitModulePhysicalLayoutsandBillofMaterials.................................................................. 3 5 EVMHardwareandSoftwareSetup...................................................................................... 8 6 TroubleshootingUnexpectedDialogBoxes.............................................................................. 8 7 HardwareConnection....................................................................................................... 8 8 Operation..................................................................................................................... 9 9 CalibrationScreen.......................................................................................................... 12 10 Pro(Advanced)Screen.................................................................................................... 13 11 RelatedDocumentationfromTexasInstruments...................................................................... 14 ListofFigures 1 bq20z65EVM-001Layout–SilkScreen.................................................................................. 4 2 TopAssembly................................................................................................................ 4 3 TopLayer..................................................................................................................... 4 4 BottomLayer................................................................................................................. 5 5 BottomAssembly............................................................................................................ 5 6 Schematic..................................................................................................................... 7 7 bq20z65CircuitModuleConnectiontoCellsandSystemLoad/Charger............................................ 9 8 SBSDataScreen........................................................................................................... 10 9 DataFlashScreen,1stLevelSafetyClass............................................................................. 11 10 CalibrationScreen.......................................................................................................... 13 11 Pro(Advanced)Screen.................................................................................................... 14 ListofTables 1 OrderingInformation ........................................................................................................ 2 2 ComponentsandFlash-MemorySettingsforDifferentPrechargeModes........................................... 3 3 BillofMaterials............................................................................................................... 5 4 PerformanceSpecificationSummary..................................................................................... 8 5 CircuitModuletoEV2300Connections................................................................................... 9 SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 1 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

Features www.ti.com 1 Features • Complete evaluation system for the bq20z65 SBS 1.1-compliant advanced gas gauge with Impedance Track™technologyandbq29412independentovervoltageprotectionIC • Populatedcircuitmoduleforquicksetup • Softwarethatallowsdataloggingforsystemanalysis 1.1 Kit Contents • bq20z65/bq29412circuitmodule • Setofsupportdocumentation 1.2 Ordering Information Table1.OrderingInformation EVMPARTNUMBER CHEMISTRY CONFIGURATION CAPACITY bq20z65EVM-001 Li-ion 2,3,or4cell Any 2 bq20z65-Based Circuit Module Thebq20z65/bq29412-basedcircuitmoduleisacompleteandcompactexamplesolutionofabq20z65 circuitforbatterymanagementandprotectionofLi-ionorLi-polymerpacks.Thecircuitmodule incorporatesabq20z65batterymonitorIC,bq29412independentovervoltageprotectionIC,andallother componentsnecessarytoaccuratelypredictthecapacityof2-,3-,or4-seriescells. 2.1 Circuit Module Connections Contactsonthecircuitmoduleprovidethefollowingconnections: • Directconnectiontothecells:1N(BAT-),1P,2P,3P,4P(BAT+) • Totheserialcommunicationsport(SMBC,SMBD) • ThesystemloadandchargerconnectacrossPACK+andPACK- • Tothesystem-presentpin(SYSPRES) 2.2 Pin Descriptions PINNAME DESCRIPTION 1N -veconnectionoffirst(bottom)cell 1P +veconnectionoffirst(bottom)cell 2P +veconnectionofsecondcell 3P +veconnectionofthirdcell 4P +veconnectionoffourth(top)cell SMBC Serialcommunicationportclock SMBD Serialcommunicationdataport SYSPRES Systempresentpin(iflow,systemispresent) PACK- Packnegativeterminal VSS Packnegativeterminal PACK+ Packpositiveterminal ImpedanceTrack,bqEasyaretrademarksofTexasInstruments. WindowsisatrademarkofMicrosoftCorporation. 2 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

www.ti.com bq20z65CircuitModuleSchematic 3 bq20z65 Circuit Module Schematic Thissectioncontainsinformationformodifyingandchoosingaprechargemodeforbq20z65/bq29412 implementation. 3.1 Schematic Theschematicfollowsthebillofmaterialsinthisuser'sguide. 3.2 Modifications for Choosing Particular Precharge Mode Inordertocharge,thechargeFET(CHG-FET)mustbeturnedontocreateacurrentpath.Whenthe V is0VandCHG-FET=ON,theV isaslowasthebatteryvoltage.Inthiscase,thesupply (BAT) (PACK) voltageforthedeviceistoolowtooperate.Thisfunctionhasthreepossibleconfigurations,andtheICcan beeasilyconfiguredaccordingtotheapplicationneeds.Thethreemodesare0-VChargeFETmode, CommonFETmode,andPrechargeFETmode. 1. 0-VChargeFETmode-DedicatesaprechargecurrentpathusinganadditionalFET(ZVCHG-FET)to sustainthePACK+voltagelevel. 2. CommonFETmode-DoesnotuseadedicatedprechargeFET.ThechargeFET(CHG-FET)issetto ONstateasdefault. 3. PrechargeFETmode-Dedicatesaprechargecurrentpathusinganadditionalopen-drain(OD)pin driveFET(PCHG-FET)tosustainthePACK+voltagelevel. TouseaparticularmodeofchargingwiththeEVM,addorremovesomeelementsshowninTable2,and usethegivensettingsofDF.Configuration,ZVCHG1,0. Table2.ComponentsandFlash-MemorySettingsforDifferentPrecharge Modes MODE RESISTORS PRECHGFET ZVCHG1 ZVCHG0 1.0-VChg(default) R21,R28 Q3 0 0 2.CommonFET R24 Q2 0 1 3.Precharge R23,R28 Q3 1 0 Formoredetailsaboutprechargeoperationandmodechoices,seethebq20z65datasheet(SLUS878). 3.3 Testing Fuse-Blowing Circuit Topreventthelossofboardfunctionalityduringthefuse-blowingtest,theactualchemicalfuseisnot providedinthecircuit.FETQ1drivesTP3lowifafuse-blowconditionoccurs;so,monitoringTP3canbe usedtotestthiscondition.Fuseplacementontheapplicationboardisshowninthebq20z65datasheet reference-boardschematic. 4 Circuit Module Physical Layouts and Bill of Materials Thissectioncontainstheprinted-circuitboard(PCB)layout,billofmaterials,andassemblydrawingsfor thebq20z65/bq29412circuitmodule. SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 3 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

CircuitModulePhysicalLayoutsandBillofMaterials www.ti.com 4.1 Board Layout Thissectionshowsthedimensions,PCBlayers(Figure1throughFigure5),andassemblydrawingforthe bq20z65module. Figure1.bq20z65EVM-001Layout–SilkScreen Figure2.TopAssembly Figure3.TopLayer 4 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

www.ti.com CircuitModulePhysicalLayoutsandBillofMaterials Figure4.BottomLayer Figure5.BottomAssembly 4.2 Bill of Materials and Schematic Table3.BillofMaterials Count RefDes Description Size Mfr PartNumber 21 C1–C9,C12, Capacitor,Ceramic,0.1m F,50V,X7R,20% 0603 Any STD C13,C15–C18, C23,C24, C26–C28 1 C11 Capacitor,Ceramic,0.22m F,50V,X7R,20% 0603 Any STD 1 C19 Capacitor,Ceramic,4.7m F,10V,X7R,20% 0603 Any STD 1 C20 Capacitor,Ceramic,47nF,50V,X7R,20% 0603 Any STD 2 C22,C25 Capacitor,Ceramic,0.47m F,16V,X7R,20% 0603 Any STD 3 C10,C14,C21 Capacitor,Ceramic,1.0m F,25V,X7R,20% 0805 Any STD 4 D1–D3,D11 Diode,Switching,150-mA,75-V,350mW SOT23 Vishay-Liteon BAS16 2 D4,D5 Diode,Dual,Zener,5.6V,300mW SOT23 Vishay- AZ23C5V6 Telefunken 5 D6–D10 Diode,LED,Green,Gullwing,GWType,20ma,7.5 0.120· 0.087 Panasonic LN1361C mcdtyp. inches 1 J1 Header,FrictionLockAss'y,4-pinRightAngle, 0.400· 0.500 Molex 22-05-3041 1 Q1 MOSFET,N-ch,20-V,1.3A,0.16-W SOT23 Fairchild NDS331N 2 Q2,Q4 MOSFET,N-chLogicLevel,PowerTrench,30V,11A, SO8 Fairchild FDS6690A 12.5mW SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 5 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

CircuitModulePhysicalLayoutsandBillofMaterials www.ti.com Table3.BillofMaterials (continued) Count RefDes Description Size Mfr PartNumber 1 Q3 MOSFET,P-ch,30-V,8.0-A,20-mW SO8 Siliconix Si4435DY 1 Q6 MOSFET,Nch,50V,0.22A,6W SOT23 Fairchild BSS138 12 R1–R5,R12, Resistor,Chip,100-W ,1/16-W,5% 0603 Std Std R13,R32–R34, R38,R39 1 R11 Resistor,Chip,0.010W ,1-W,xx% 2512 Vishay WSL-2512-0101% R86 3 R15,R16,R40 Resistor,Chip,220kW ,1/16-W,5% 0603 Std Std 1 R17 Resistor,Chip,300-W ,1-W,10% 2512 WSL-2512-3001% R86 2 R18,R27 Resistor,Chip,3.01MW ,1/16-W,5% 0603 Std Std 5 R14,R19, Resistor,Chip,5.1kW ,1/16-W,5% 0603 Std Std R21–R23 4 R20,R36,R37, Resistor,Chip,1MW ,1/16-W,5% 0603 Std Std R41 2 R24,R28 Resistor,Chip,100kW ,1/16-W,5% 0603 Std Std 2 R25,R29 Resistor,Chip,8.45kW ,1/16-W,1% 0603 Std Std 2 R26,R30 Resistor,Chip,61.9kW ,1/16-W,1% 0603 Std Std 7 R6–R10,R31, Resistor,Chip,1kW ,1/16-W,5% 0603 Std Std R35 2 RT1,RT2 Thermistor,10kW 0.095· 0.150 Semitec NTC103AT 1 SW1 Switch,Pushbutton,Momentary,N.O.LowProfile 5mm· 5mm Panasonic EVQPLCxxxx 2 TB1,TB4 TerminalBlock,2-pin,6-A,3,5mm 0.27· 0.25 OST ED1514 2 TB2,TB3 TerminalBlock,3-pin,6-A,3,5mm 0.41· 0.25 OST ED1515 1 TP1 TestPoint,Black,ThruHoleColorKeyed 0.100· 0.100inch Keystone 5001 1 TP3 TestPoint,White,ThruHoleColorKeyed 0.100· 0.100inch Keystone 5002 1 U1 IC,VoltageProtectionfor2,3,4CellLion,2nd SSOP-08 TI BQ29412DCT Protection,4.45VOVP 1 U2 IC,Cool-GGProgrammableBatteryManagement TSSOP30 TI bq20z65DBT 6 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

www.ti.com CircuitModulePhysicalLayoutsandBillofMaterials Figure6.Schematic 4.3 bq20z65/bq29412 Circuit Module Performance Specification Summary Thissectionsummarizestheperformancespecificationsofthebq20z65/bq29412circuitmodule. SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 7 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

EVMHardwareandSoftwareSetup www.ti.com Table4.PerformanceSpecificationSummary Specification Minimum Typical Maximum Units InputvoltagePack+toPack– 6 15 25 V Chargeanddischargecurrent 0 2 7 A 5 EVM Hardware and Software Setup Thissectiondescribeshowtoinstallthebq20z65PCsoftwareandhowtoconnectthedifferent componentsoftheEVM. 5.1 System Requirements Thebq20z65EVSWsoftwarerequiresWindows™2000orWindowsXP. 5.2 Software Installation Findthelatestsoftwareversioninthebq20z65toolfolderonpower.ti.com.Usethefollowingstepsto installthebq20z65EVSWsoftware: 1. CopythefilesfromtheTiWebsiteintoatemporarydirectoryyouselect,double-clickon bqEV-EASYSetup00.09.xx.exe,wherexxindicatestheversion,andfollowtheinstallerinstructionsto completethebq20z60EVSWinstallation. 2. IftheEV2300wasnotpreviouslyinstalled,afterbq20z60EVSWinstallation,aTIUSBDRIVER INSTALLERpopsup.ClickYesfortheagreementmessageandfollowitsinstructions.Twodriversare associatedwiththeEV2300.Followtheinstructionstoinstallboth.Donotrebootthecomputer,evenif askedtodoso. 3. PlugtheEV2300intoaUSBport.TheWindowssystemmayshowapromptthatnewhardwarehas beenfound.Whenasked,"CanWindowsconnecttoWindowsUpdatetosearchforsoftware?",select "No,notthistime"andclickonNEXT.Inthenextdialogwindow,itindicates"Thiswizardhelpsyou installsoftwarefor:TIUSBFirmwareUpdater",select"Installthesoftwareautomatically (Recommended)"andclickNEXT.ItiscommonforthenextscreentobetheConfirmFileReplace screen.ClickNotocontinue.Ifthisscreendoesnotappear,thengotothenextstep.AfterWindows indicatesthattheinstallationwasfinished,asimilardialogwindowpopsuptoinstalltheseconddriver; proceedwiththesameinstallationpreferenceasthefirstone.TheseconddriverisTIUSBbq80xx Driver. 6 Troubleshooting Unexpected Dialog Boxes Thefollowingactionscanhelptheusertoavoidunexpecteddialogboxes. • EnsurethatthefileswereextractedfromthezipfileusingthePreserveFoldernamesoption. • Ensurethatallthefileswereextractedfromthezipfile. • Theuserthatisdownloadingthefilesmustbeloggedinastheadministrator. • Thedriverisnotsigned,sotheadministratormustallowinstallationofunsigneddriversinthe operatingsystempolicy. 7 Hardware Connection Thebq20z65EVM-001comprisesthreehardwarecomponents:thebq20z65/bq29412circuitmodule,the EV2300PCinterfaceboard,andthePC. 7.1 Connecting bq20z65/bq29412 Circuit Module to Battery Pack Figure7showshowtoconnectthebq20z65/bq29412circuitmoduletothecellsandsystemload/charger. Thecellsmustbeconnectedinthefollowingorder: 8 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

www.ti.com Operation 1. 4-CellPack:1N(BAT–),1P,2P,3P,and4P(seeSection2.1fordefinitions). 2. 3-CellPack:1N(BAT–),1P,2P,andthenconnect4Pand3Ptogether. 3. 2-CellPack:1N(BAT–),1P,andthenconnect4P,3P,and2Ptogether Tostartchargeordischargetest,connectPRESpintoPACK-pintosetSYSPRESstate.Totestsleep mode,disconnecttheSYSPRESpin. Figure7.bq20z65CircuitModuleConnectiontoCellsandSystemLoad/Charger 7.2 PC Interface Connection ThefollowingstepsconfigurethehardwareforinterfacetothePC: 1. Connectthebq20z65-basedsmartbatterytotheEV2300usingwireleadsasshowninTable5. Table5.CircuitModuletoEV2300Connections bq20z65-BasedBattery EV2300 SMBD SMBD SMBC SMBC VSS GND 2. ConnectthePCUSBcabletotheEV2300andthePCUSBport. Thebq20z65EVM-001isnowsetupforoperation. 8 Operation Thissectiondetailstheoperationofthebq20z65EVSWsoftware. 8.1 Starting the Program RunbqEvaluationSoftwarefromtheStart|Programs|TexasInstruments|bq20z65EVSWmenu sequence.TheSBSDatascreen(Figure8)appears.Databeginstoappearoncethe<Refresh>(single timescan)buttonisclicked,orwhenthe<KeepScanning>checkboxischecked.Todisablethescan feature,deselect<KeepScanning>. Thecontinuousscanningperiodcanbesetviathe|Options|and|SetScanInterval|menuselections. Therangeforthisintervalis0msto65535ms.Onlyitemsthatareselectedforscanningarescanned withinthisperiod. SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 9 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

Operation www.ti.com ThebqEvaluationSoftwareprovidesaloggingfunctionwhichlogsthevaluesthatwerelastscannedby EVSW.Toenablethisfunction,selecttheStartLoggingbutton;thiscausestheKeepScanningbuttonto beselected.WhenloggingisStopped,thekeepscanningbuttonisstillselectedandhastobemanually unchecked. Theloggingintervalsarespecifiedunderthe|Options|menuwiththemaximumvalueof65535ms.The Logintervalcannotbesmallerthanthescanintervalbecausethisresultsinthesamevaluebeinglogged atleasttwice. Figure8.SBSDataScreen Thisscreen(Figure8)showstheSBSdatasetalongwithadditionalManufacturersAccess()command informationsuchasindividualcellmeasurements.AdditionalFlagandStaticdatacanbeviewedby selectingtheappropriatetabatthebottomoftheSBSscreen. DatasuchasSBS.ManufacturerName()isstaticanddoesnotchange.Thisdataisviewedseparately usingtheStaticDatatabavailableatthebottomofthescreen. Draggingthesplitterbar(linethatseparatestheFlags/StaticdatafromSBSvalues)changestheheightof theFlags/StaticDatadisplay.Selecting|View|,then|AutoArrange|returnsthesplitterbartoitsoriginal location. 10 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

www.ti.com Operation 8.2 Setting Programmable bq20z65 Options Thebq20z65dataflashcomesconfiguredperthedefaultsettingsdetailedinthebq20z65datasheet. Ensurethatthesettingsarecorrectlychangedtomatchthepackandapplicationforthebq20z65solution beingevaluated. IMPORTANT:Thecorrectsettingoftheseoptionsisessentialtogetthebestperformance. ThesettingscanbeconfiguredusingtheDataFlashscreen(Figure9). Figure9.DataFlashScreen,1stLevelSafetyClass Toreadallthedatafromthebq20z65dataflash,clickonmenuoption|DataFlash|ReadAll|. Towritetoadataflashlocation,clickonthedesiredlocation,enterthedataandpress<Enter>,which writestheentiretabofflashdata,orselectmenuoption|DataFlash|WriteAll|.Thedataflashmustbe readbeforeanywritesareperformedtoavoidanyincorrectdatabeingwrittentothedevice. The|File|SpecialExport|menuoptionallowsthedataflashtobeexported,butitconfiguresthe exporteddataflashtoalearnedstatereadyformassproductionuse. Thedataflashconfigurationcanbesavedtoafilebyselecting|File|Export|andenteringafilename.A dataflashfilealsocanberetrievedinthisway,imported,andwrittentothebq20z65usingthe|WriteAll| button. Theconfigurationinformationofthebq29z95andmodulecalibrationdataalsoisheldinthebq20z65data flash. SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 11 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

CalibrationScreen www.ti.com Thebq20z65allowsforanautomaticdataflashexportfunction,similartotheSBSDataloggingfunction. Thisfeature,whenselectedvia|Options|AutoExport|,exportsDataFlashtoasequentialseriesoffiles namedasFilenameNNNNN.ggwhereN=adecimalnumberfrom0to9. TheAutoExportintervalissetunderthe|Optionsmenu|withaminimumvalueof15s.TheAutoExport filenamealsoissetunderthe|Optionsmenu|. Whenacheckmarkisnextto|AutoExport|,theAutoExportisinprogress.Thesamemenuselectionis usedtoturnon/offAutoExport. Ifthedataflashscreenisblank,thenthebq20z65thatisbeingusedmaynotbesupportedbythe bqEVSWversionthatisbeingused.Anupgrademayberequired. 9 Calibration Screen 9.1 How to Calibrate Thebq20z65mustbecalibratedusingpowersuppliesorapowersupplyandcellsimulationresistors(200 W to1000W each)beforecellsareattached.Beforethebq20z65iscalibrated: • Connect and measure a 2-A current source from 1N (-) and Pack- (+) to calibrate without using the FETs.(CalibrationusingtheFETsisnotrecommended.) • MeasurethepackvoltagefromBatt+toBatt-(totalofcellvoltages). • Measurethetemperatureofthepack. • Thesestepsmaynotberequired,dependingonthetypeofcalibrationbeingperformed. 9.2 To Calibrate the bq20z65 Performthefollowingsteps. 1. Selectthetypesofcalibrationtobeperformed(seeFigure10). 2. Enterthemeasuredvaluesforthetypesselected(exceptforCCOffsetCalibration). 3. IfVoltageCalibrationisselected,thenenterthenumberofcellsonthepack. 4. IfTemperatureCalibrationisselected,thenselectthesensorthatistobecalibrated. 5. Ifthecurrentsourceisconnectedbetween1NandPack-,thenselecttheOff(bypassed)checkboxin theFETControlsection. 6. PresstheCalibratePartbutton. 9.3 Board Offset Calibration Thefollowingstepsperformtheoffsetcalibrationforthecurrentoffsetoftheboard. 1. Removeload/externalvoltageandshortPack-toBatt-. 2. PresstheCCBoardOffsetCalibrationbutton. 9.4 Pack Voltage Calibration ThefollowingstepscalibratethevoltageattheAFEPackpin. 1. EnsurethatVoltageCalibrationhasbeenperformedforthepack.Ensurethatastablechargervoltage higherthan8-VispresentatPack+. 2. PressthePackVoltagebuttontocalibrate. 12 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

www.ti.com Pro(Advanced)Screen Figure10.CalibrationScreen 10 Pro (Advanced) Screen 10.1 SMB Communication Thesetofread/writeoperationsoverSMBusarenotspecifictoanygasgauge.Theseareprovidedas general-purposecommunicationtools(Figure11). 10.2 Hexadecimal/Decimal Converter Thesetwoboxesconvertbetweenhexadecimalanddecimalassoonasvaluesaretypedintotheboxes. Invalidvaluesmaycauseerroneousresults. Whenscalingconvertedhexadecimalvaluestoahighernumberofbytes,followtheserules: • Whenunsignedisselected,theleftpadcontainszeroes. • When signed is selected, the left pad contains zeroes for a positive number, or the left pad contains F fornegativenumbers. SLUU353–June2009 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology 13 SubmitDocumentationFeedback EnabledBatteryManagementSolutionEvaluationModule

RelatedDocumentationfromTexasInstruments www.ti.com 10.3 Programming Thisscreenallowsdevicereprogrammingfromunencryptedandencryptedfiles. Figure11.Pro(Advanced)Screen 11 Related Documentation from Texas Instruments 1. bq20z95,SBS1.1-CompliantGasGaugeEnabledandProtectionEnabledWithImpedanceTrack™ datasheet(SLUS757) 2. bq20z90-V1.50+bq29330,bq20z95TechnicalReferencemanual(SLUU264) 3. bq20z70andbq20z90ApplicationBook(SLUA404) 4. Quick-StartGuideforbq20zxxFamilyGasGaugeapplicationreport(SLUA421) 5. bqEasy™User'sGuide(SLUU278) 14 bq20z65EVM-001SBS1.1ImpedanceTrack™Technology SLUU353–June2009 EnabledBatteryManagementSolutionEvaluationModule SubmitDocumentationFeedback

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 ItisimportanttooperatethisEVMwithintheinputvoltagerangeof6Vto25Vandtheoutputvoltagerangeof0Vto16.4V. Exceedingthespecifiedinputrangemaycauseunexpectedoperationand/orirreversibledamagetotheEVM.Iftherearequestions concerningtheinputrange,pleasecontactaTIfieldrepresentativepriortoconnectingtheinputpower. Applyingloadsoutsideofthespecifiedoutputrangemayresultinunintendedoperationand/orpossiblepermanentdamagetotheEVM. PleaseconsulttheEVMUser'sGuidepriortoconnectinganyloadtotheEVMoutput.Ifthereisuncertaintyastotheloadspecification, pleasecontactaTIfieldrepresentative. Duringnormaloperation,somecircuitcomponentsmayhavecasetemperaturesgreaterthan60(cid:176) C.TheEVMisdesignedtooperate properlywithcertaincomponentsabove60(cid:176) Caslongastheinputandoutputrangesaremaintained.Thesecomponentsincludebutare notlimitedtolinearregulators,switchingtransistors,passtransistors,andcurrentsenseresistors.Thesetypesofdevicescanbeidentified usingtheEVMschematiclocatedintheEVMUser'sGuide.Whenplacingmeasurementprobesnearthesedevicesduringoperation, pleasebeawarethatthesedevicesmaybeverywarmtothetouch. MailingAddress:TexasInstruments,PostOfficeBox655303,Dallas,Texas75265 Copyright©2009,TexasInstrumentsIncorporated

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