User's Guide SLVU116B–December2004–RevisedSeptember2011 TPS75003EVM User's Guide Contents 1 Introduction .................................................................................................................. 1 2 PerformanceSpecificationSummary..................................................................................... 2 3 Modifications ................................................................................................................. 2 4 BoardLayout ................................................................................................................ 5 5 Schematic .................................................................................................................. 11 6 BillofMaterials............................................................................................................. 12 ListofFigures 1 EfficiencyWithV =5V,V =1.2V,V =3.3V ................................................................. 3 IN OUT1 OUT2 2 NormalizedLoadRegulationWithV =5V,V =1.2V,V =3.3V .......................................... 4 IN OUT1 OUT2 3 OutputRipplewhenV =5V,V =1.2V,I =2A............................................................... 4 IN OUT1 OUT1 4 OutputRippleWhenV =5V,V =3.3V,I =2A.............................................................. 5 IN OUT2 OUT2 5 SoftStartWithV =5.0V................................................................................................. 5 IN 6 TopLayer.................................................................................................................... 6 7 BottomLayer................................................................................................................ 7 8 TopAssembly............................................................................................................... 8 9 Layer2....................................................................................................................... 9 10 Layer3...................................................................................................................... 10 11 TPS75003EVMSchematic............................................................................................... 11 ListofTables 1 TypicalPerformanceSpecificationSummary........................................................................... 2 2 TPS75003EVMBillofMaterials......................................................................................... 12 1 Introduction TheTexasInstrumentsTPS75003EVMevaluationmodule(EVM)helpsdesignersevaluatetheoperation andperformanceoftheTPS75003multi-channelpowerIC.Thisdevicehastwobuckcontrollersandalow dropoutlinearregulator.Thedevicewilloperateatinputvoltagesbetween2.2Vand6.5V.Thebuck controllerscanprovideoutputvoltagesbetween1.22Vandtheinputvoltageandoutputcurrentsupto3 A.ThisEVMisspecificallydesignedandoptimizedtooperatefroma5Vinputwithoutputcurrentsupto 2AforV =1.2VtypicalandV =3.3Vtypical.Inaddition,theEVMisjumperconfigurablesothat OUT1 OUT2 eachoutputcanbeindependentlyenabledortheoutputscanbesequencedinthefollowingorder:V , OUT3 V thenV . OUT2 OUT1 SLVU116B–December2004–RevisedSeptember2011 TPS75003EVMUser'sGuide 1 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

PerformanceSpecificationSummary www.ti.com 2 Performance Specification Summary Table1providesasummaryoftheTPS75003EVMperformancespecifications.Allspecificationsaregiven foranambienttemperatureof25°C. Table1.TypicalPerformanceSpecificationSummary VOLTAGERANGE CURRENTRANGE CONDITION (V) (mA) MIN TYP MAX MIN TYP MAX V BuckController V =5V 1.18 1.22 1.26 0 2000 OUT1 I V BuckController V =5V 3.15 3.30 3.43 0 2000 OUT2 I V LinearRegulator V =5V 2.41 2.50 2.65 0 300 OUT3 I 3 Modifications Passivecomponentswith603orlargerfootprintswereusedtoallowforusercustomization. Additionally,asecondsoftstartcapacitorwasaddedforbuckcontrollerbutnotpopulatedtoallowthe softstarttimingtobeeasilymodified. InputcapacitorC1wasincludedtominimizeinductivedroopduetolongleadsfromabenchpower supply.Acapacitorofsimilarsizemayormaynotbeneededinarealapplicationdependingonthe proximitytotheinputpowersupply. Ifalloftheoutputvoltagesareequaltoorgreaterthantheminimum1.4VthresholdforEN1andEN2, thentheoutputscanbesequencedinanyorderbysimplymodifyingtheV toENxconnections.If OUTx oneofthebuckoutputvoltagesisbetween1.2Vand1.4V,thenonlyEN3withitsminimum1.1V thresholdcanbeenabledbythisoutputvoltage.Forexample,ifV =1.2V,V =3.3VandV = OUT1 OUT2 OUT3 2.5V,thefollowingadditionalsequencingoptionsareavailablebymodifyingtheEVM'sV toENx OUTx connections:V =1.2V,V =2.5VthenV =3.3VorV =3.3V,V =2.5VthenV = OUT1 OUT3 OUT2 OUT2 OUT3 OUT1 1.2V.AnexternalSVS,liketheTPS3808,monitoringthe1.2Vto1.4VrailandwithitsRESEToutput tiedtoENxcanbeusedtoprovidetheremainingsequencingoptions. 3.1 Input/Output Connector Descriptions ThischapterdescribesthejumpersandconnectorsontheEVMaswellashowtoproperlyconnect,setup, andusetheTPS75003EVM. J1–VIN— Thisisthepositiveconnectiontotheinputpowersupply.Theleadstotheinputsupplyshould betwistedandkeptasshortaspossibletominimizeEMItransmission. J2–GND— Thisisthereturnconnectionfortheinputpowersupply. J3–VOUT1— ThisisthepositiveconnectionfortheV output.Connectthispintothepositiveinputof OUT1 theV load. OUT1 J4–GND— ThisisthenegativeconnectionfortheV output.Connectthispintothenegativeinputof OUT1 theV load. OUT1 J5–VOUT2— ThisisthepositiveconnectionfortheV output.Connectthispintothepositiveinputof OUT2 theV load. OUT2 J6–GND— ThisisthenegativeconnectionfortheV output.Connectthispintothenegativeinputof OUT2 theV load. OUT2 J7–VOUT3— ThisisthepositiveconnectionfortheV output.Connectthispintothepositiveinputof OUT3 theV load. OUT3 J8–GND— ThisisthenegativeconnectionfortheV output.Connectthispintothenegativeinputof OUT3 theV load. OUT3 2 TPS75003EVMUser'sGuide SLVU116B–December2004–RevisedSeptember2011 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

www.ti.com Modifications JP1– ENVO1— ThisjumperenablesanddisablesV .Withthejumperremoved(DEFAULT),EN1is OUT1 pulledlowbyanexternalpulldownresistorandV isdisabled.WiththejumpertiedtoV ,EN1is OUT1 IN pulledhightoV andV isenabled.WiththejumpertiedtoAFTERVO2,EN1istiedtoV so IN OUT1 OUT2 thatV willnotbeenableduntilafterV isenabled. OUT1 OUT2 JP2– ENVO2— ThisjumperenablesanddisablesV .Withthejumperremoved(DEFAULT),EN2is OUT2 pulledlowbyanexternalpulldownresistorandV isdisabled.Withthejumperinstalled,EN2is OUT2 pulledhightoV andV isenabled.WiththejumpertiedtoAFTERVO3,EN3istiedtoV so IN OUT2 OUT3 thatV willnotbeenableduntilafterV isenabled. OUT2 OUT3 JP3– ENVO3— ThisjumperenablesanddisablesV .Withthejumperremoved(DEFAULT),EN3is OUT3 pulledlowbyanexternalpulldownresistorandV isdisabled.WiththejumpertiedtoV ,EN3is OUT3 IN pulledhightoV andV isenabled. IN OUT3 3.2 Setup ConnectaninputsupplybetweenJ1andJ2.Thevoltagerangeonthissupplyshouldstaybetween2.2V and6.5V.Connectaloadnottoexceed2AforthebuckcontrollersbetweenJ3andJ4forV and OUT1 betweenJ5andJ6forV .Connectaloadnottoexceed300mAforthelinearregulatorbetweenJ7 OUT2 andJ8.ConfiguretheJP1,JP2andJP3enablingjumperstothedesiredsetting.Topreventnoisepickup fromdistortingvoltagemeasurementsofanyofthethreeoutputvoltages,keeptheloopcreatedbythe voltageprobetipanditsgroundconnectionassmallaspossibleandasfarawayaspossiblefromthe inductorsontheboard. 3.3 Test Results 100 VIN = 5 V VOUT2 = 3.3 V VOUT1 = 1.2 V 80 % − y c n e 60 ci Effi 40 20 0 500 1000 1500 2000 IO − Output Current − mA A EfficiencymaybeimprovedordegradedbyusingdifferentFETsand/orinductors. Figure1.EfficiencyWithV =5V,V =1.2V,V =3.3V IN OUT1 OUT2 SLVU116B–December2004–RevisedSeptember2011 TPS75003EVMUser'sGuide 3 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

Modifications www.ti.com 1.03 VIN = 5 V n 1.02 o ulati VOUT1 = 1.2 V eg 1.01 R ad VOUT2 = 3.3 V o L 1 d e z ali 0.99 m r o N 0.98 0.97 0 500 1000 1500 2000 IO − Output Current − mA Figure2.NormalizedLoadRegulationWithV =5V,V =1.2V,V =3.3V IN OUT1 OUT2 80 − V 60 e g a olt 40 V put 20 ut O d 0 e pl u o c −20 − C A − C) −40 A O( V −60 −80 0 5 10 15 20 25 30 35 40 45 50 t − Time − (cid:1)s Figure3.OutputRipplewhenV =5V,V =1.2V,I =2A IN OUT1 OUT1 4 TPS75003EVMUser'sGuide SLVU116B–December2004–RevisedSeptember2011 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

www.ti.com BoardLayout 80 V − 60 e g a olt 40 V ut p 20 ut O d e 0 pl u o c −20 − C A − C) −40 A O( V −60 −80 0 5 10 15 20 25 30 35 40 45 50 t − Time − (cid:1)s Figure4.OutputRippleWhenV =5V,V =3.3V,I =2A IN OUT2 OUT2 OUTPUT VOLTAGE vs TIME 3.5 VOUT2 = 3.3 V 3 V 2.5 − VOUT3 = 2.5 V e g 2 a olt V ut 1.5 p ut O − 1 VOUT1 = 1.2 V O V 0.5 0 IOUT1 = IOUT2 = 2 A −.5 0 5 10 15 20 25 30 35 40 45 50 t − Time − ms Figure5.SoftStartWithV =5.0V IN 4 Board Layout Boardlayoutiscriticalforallswitchmodepowersupplies.Thefollowingfiguresshoweachofthefour layersoftheTPS75003EVMPWB.Thenodeswithhighswitchingfrequenciesandcurrentsareshortand areisolatedfromthenoisesensitivefeedbackcircuitry.Carefulattentionhasbeengiventotheroutingof highfrequencycurrentloops.Thesenseresistorsforthecurrentlimitandsoftstartshouldbeplaced betweentheINxandISxpinsasclosetotheICaspossible.RefertotheTPS75003datasheet(literature numberSBVS052)foradditionallayoutguidelines. SLVU116B–December2004–RevisedSeptember2011 TPS75003EVMUser'sGuide 5 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

BoardLayout www.ti.com Figure6.TopLayer 6 TPS75003EVMUser'sGuide SLVU116B–December2004–RevisedSeptember2011 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

www.ti.com BoardLayout Figure7.BottomLayer SLVU116B–December2004–RevisedSeptember2011 TPS75003EVMUser'sGuide 7 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

BoardLayout www.ti.com Figure8.TopAssembly 8 TPS75003EVMUser'sGuide SLVU116B–December2004–RevisedSeptember2011 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

www.ti.com BoardLayout Figure9.Layer2 SLVU116B–December2004–RevisedSeptember2011 TPS75003EVMUser'sGuide 9 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

BoardLayout www.ti.com Figure10.Layer3 10 TPS75003EVMUser'sGuide SLVU116B–December2004–RevisedSeptember2011 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

www.ti.com Schematic 5 Schematic + + + Figure11.TPS75003EVMSchematic SLVU116B–December2004–RevisedSeptember2011 TPS75003EVMUser'sGuide 11 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

BillofMaterials www.ti.com 6 Bill of Materials Table2.TPS75003EVMBillofMaterials COUNT RefDes DESCRIPTION SIZE MFR PARTNUMBER 3 C1,C12,C13 Capacitor,POSCAP,100-µF,6.3-V,45-mΩ,20% 6032(C) Sanyo 6TPB100MC 1 C10 Capacitor,Ceramic,10-pF,50-V,C0G,5% 603 TDK C1608C0G1H100D 0 C11,C15–C18 Capacitor,Ceramic,xx-µF,xx-V 603 2 C2,C4 Capacitor,Ceramic,0.1-µF,16-V,X7R,10% 603 TDK C1608X7R1C104K 2 C3,C5 Capacitor,Ceramic,1500-pF,50-V,X7R,10% 603 TDK C1608X7R1H152K 1 C6 Capacitor,Ceramic,1.0-µF,6.3-V,X5R,10% 603 TDK C1608X5R0J105K 1 C7 Capacitor,Ceramic,0.01-µF,50-V,X7R,10% 603 TDK C1608X7R1H103K 3 C8,C9,C14 Capacitor,Ceramic,10-µF,10-V,X5R,20% 805 TDK C2012X5R1A106MT 1 D1 Diode,Schottky,1A,20V 457-04 OnSemi MBRM120 1 D2 Diode,Schottky,3.0-A,20V SMC Vishay SS32 8 J1–J8 Header,2-pin,100milspacing,(36-pinstrip) 0.100×2 Sullins PTC36SAAN 1 JP2 Header,2-pin,100milspacing,(36-pinstrip) 0.100×2 Sullins PTC36SAAN 2 JP1,JP3 Header,3-pin,100milspacing,(36-pinstrip) 0.100×3 Sullins PTC36SAAN 1 L1 Inductor,SMT,5.0-µH,2.9-A,24-mΩ 0.264sq Sumida CDRH6D38-5R0 1 L2 Inductor,SMT,15-µH,2.6-A,53-mΩ 0.327×0.327 Sumida CDRH8D43-150 2 Q1,Q2 MOSFET,P-ch,20-V,4.7-A,39-mΩ SOT23 Vishay Si2323DS 3 R1–R3 Resistor,chip,100kΩ,1/16W,1% 603 Std Std 1 R10 Resistor,chip,0-Ω,1/16W,5% 603 Std Std 0 R11 Resistor,chip,xx-Ω,1/16W,1% 603 2 R4,R5 Resistor,chip,0.033-Ω,1/4W,1% 1210 Std Std 2 R6,R8 Resistor,chip,61.9kΩ,1/16W,1% 603 Std Std 1 R7 Resistor,chip,15.4kΩ,1/16W,1% 603 Std Std 1 R9 Resistor,chip,36.5kΩ,1/16W,1% 603 Std Std 1 U1 IC,TripleChannelDC/DCConverter QFN-20 TI TPS75003RHLR 1 — PCB,2.4In×2.2In×0.062In Any HPA092 3 — Shunt,100-mil,black 0.100 3M 929950-00 12 TPS75003EVMUser'sGuide SLVU116B–December2004–RevisedSeptember2011 SubmitDocumentationFeedback Copyright©2004–2011,TexasInstrumentsIncorporated

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