PXD20-xxDxxDualOutputDC/DCConverter 9to18,18to36and36to75Vdcinput,12and15VdcDualOutput,20W Features Lowprofile:2.0x1.0X0.4inches(50.8X25.4X10.2mm) 2:1wideinputvoltageof 9-18,18-36and36-75VDC 20Wattsoutputpower Inputtooutputisolation:1600Vdc,min Operatingcasetemperaturerange:100°Cmax Over-currentprotection,auto-recovery Outputovervoltageprotection ISO9001certifiedmanufacturingfacilities UL60950-1,EN60950-1andIEC60950-1licensed CEMarkmeet2006/95/EC,93/68/EECand2004/108/EC ComplianttoRoHSEUdirective2002/95/EC Applications Distributedpowerarchitectures Communicationequipment Computerequipment Option NegativelogicRemoteon/off GeneralDescription ThePXD20-xxDxxdualoutputseriesoffers20wattsofoutputpowerfroma2x1x0.4inchpackage. Thisserieshasa2:1wideinputvoltageof 9-18,18-36,or 36-75VDC,andfeatures1600VDCof isolation,short-circuit,andover-voltageprotection. Tableofcontents Absolutemaximumratings P2 SolderandRefiowConsiderations P8 InputSpecifications P2 Characteristiccurve P9 GeneralSpecifications P2 Testconfigurations P19 OutputSpecifications P3 Partnumberstructure P20 ThermalConsiderations P4 Mechanicaldata P20 Outputovercurrentprotection P7 Safetyandinstallationinstructions P21 Shortcircuitprotection P7 MTBFandReliability P21

Feb.2006 20W,DUALOUTPUT AbsoluteMaximumRating Parameter Device Min Typ Max Unit 12Dxx 18 Vdc Continuous 24Dxx 36 Vdc 48Dxx 75 Vdc InputVoltage 12Dxx 36 Vdc Transient(100ms) 24Dxx 50 Vdc 48Dxx 100 Vdc Operatingtemperaturerange All -40 +85 °C (OperatingtemperaturewillbedependedDe-ratingcurve) Operatingcaserange All 100 °C Storagetemperature All -55 +105 °C I/OIsolationvoltage All 1600 Vdc I/OIsolationcapacitance All 1000 pF InputSpecifications Parameter Device Min Typ Max Unit 12Dxx 9 12 18 Vdc OperatingInputVoltage 24Dxx 18 24 36 Vdc 48Dxx 36 48 75 Vdc Inputreflectedripplecurrent All 20 mAp-p (Pleaseseethetestingconfigurationspart.) StartUpTime(nominalvinand Powerup All 10 mS constantresistiveload) Removeon/off RemoteON/OFF PositiveLogic DC-DCON All 3 12 Vdc DC-DCOFF All 0 1.2 Vdc NegativeLogic DC-DCON All 0 1.2 Vdc (Option) DC-DCOFF All 3 12 Vdc GeneralSpecifications Parameter Device Min Typ Max Unit 12D12 86 % 12D15 86 % Efficiency 24D12 87 % TestatVin,nomandfullload 24D15 88 % (Pleaseseehetestingconfigurationspart.) 48D12 88 % 48D15 88 % Isolationresistance All 109 Ω TransientResponseRecoveryTime All 250 μS (25%loadstepchange) IsolationCapacitance All 1000 pF SwitchingFrequency(TestatVin,nomandfullload) All 500 kHz Weight All 27 g MTBF(pleaseseetheMTBFandreliabilitypart) All 1.791×106 hours 2

Feb.2006 20W,DUALOUTPUT OutputSpecifications Parameter Device Min Typ Max Unit xxD12 11.88 12.00 12.12 Vdc OperatingOutputRange xxD15 14.85 15.00 15.15 Vdc LineRegulation(LLtoHLatFullLoad) All -0.2 0.2 % LoadRegulation(0%to100%FullLoad) All -0.5 0.5 % OutputRipple&Noise,20MHzbandwidth All 100 mVp-p (Measuredwitha104pF/50VMLCC) TemperatureCoefficient All -0.02 +0.02 %/°C xxD12 0 ±833 mA OutputCurrent xxD15 0 ±667 mA xxD12 15 Vdc OutputOverVoltageProtectionZenerdiodeclamp xxD15 18 Vdc OutputOverCurrentProtection All 150 %FL OutputShortCircuitProtection All Hiccup,automaticrecovery xxD12 ±680 μF OutputCapacitorLoad xxD15 ±450 μF 3

Feb.2006 20W,DUALOUTPUT ThermalConsideration Thepowermoduleoperatesinavarietyofthermalenvironments.However,sufficientcoolingshouldbe providedtohelpensurereliableoperationof theunit.Heatis removedbyconduction,convection,and radiation to the surrounding environment. Proper cooling can be verified by measuring the point as indicatedinthefigurebelow.Thetemperatureatthislocationshouldnotexceed100°C.Whenoperating, adequatecoolingmustbeprovidedtomaintainthetestpointtemperatureatorbelow100°C.Althoughthe maximum temperature of the power modules is 100°C, lowering this temperature will increase the reliabilityoftheunit. Measurementshownininches(mm) TOPVIEW FollowingarederatingcurvesforPXD20-12D15,24D12and48D15. 4

Feb.2006 20W,DUALOUTPUT PXD20-12D15 120 100 Natureconvection 80 Natureconvectionwith heat-sink 60 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 AmbientTemperature(°C) PXD20-24D15 120 100 Natureconvection 80 Natureconvectionwithheat- sink 60 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 AmbientTemperature(°C) 5

Feb.2006 20W,DUALOUTPUT PXD20-48D15 120 100 80 Natureconvection 60 Natureconvectionwith heat-sink 40 20 0 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 AmbientTemperature(°C) 6

Feb.2006 20W,DUALOUTPUT Outputovercurrentprotection Whenexcessiveoutputcurrentsoccurinthesystem,circuitprotectionisrequiredonallpowersupplies.Normally, overloadcurrentismaintainedatapproximately150percentofratedcurrentforPXD20-xxDxxseries. Hiccup-modeisamethodofoperationinapowersupplywhosepurposeistoprotectthepowersupplyfrom beingdamagedduringanover-currentfaultcondition.Italsoenablesthepowersupplytorestartwhenthefaultis removed.Thereareotherwaysofprotectingthepowersupplywhenitisover-loaded,suchasthemaximumcurrent limitingorcurrentfoldbackmethods. Oneoftheproblemsresultingfromovercurrentisthatexcessiveheatmaybegeneratedinpowerdevices; especiallyMOSFETandSchottkydiodesandthetemperatureofthosedevicesmayexceedtheirspecifiedlimits.A protectionmechanismhastobeusedtopreventthosepowerdevicesfrombeingdamaged. Theoperationofhiccupisasfollows.Whenthecurrentsensecircuitseesanover-currentevent,thecontroller shutsoffthepowersupplyforagiventimeandthentriestostartupthepowersupplyagain.Iftheover-loadcondition hasbeenremoved,thepowersupplywillstartupandoperatenormally;otherwise,thecontrollerwillseeanother over-currenteventandshutoffthepowersupplyagain,repeatingthepreviouscycle.Hiccupoperationhasnoneof thedrawbacksoftheothertwoprotectionmethods,althoughitscircuitismorecomplicatedbecauseitrequiresa timingcircuit.Theexcessheatduetooverloadlastsforonlyashortdurationinthehiccupcycle,hencethejunction temperatureofthepowerdevicesismuchlower. ShortCircuitProtection Continuous,hiccupandauto-recoverymode. Duringshortcircuit,theconverterstillshutdown.Theaveragecurrentduringthisconditionwillbeverylow. 7

Feb.2006 20W,DUALOUTPUT SolderingandReflowConsideration LeadfreewavesolderprofileforPXD20-xxDxxDIPtype Zone ReferenceParameter Preheatzone Risetemp.speed:3°C/secmax. Preheattemp.:100~130°C Actualheating Peaktemp.:250~260°C Peaktime(T1+T2time):4~6sec ReferenceSolder:Sn-Ag-Cu/Sn-Cu HandWelding:Solderingiron-Power90W WeldingTime:2-4sec Temp.:380-400°C 8

Feb.2006 20W,DUALOUTPUT CharacteristicCurve Efficiency a.Efficiencywithloadchangeunderdifferentlineconditionatroomtemperature PXD20-12D15 90.00 85.00 80.00 75.00 9V %) 12V Eff( 70.00 18V 65.00 60.00 55.00 67 133 200 267 3lo3u4t(m4A00) 467 534 600 667 PXD20-24D15 95.00 90.00 85.00 18V %)80.00 24V Eff( 36V 75.00 70.00 65.00 60.00 67 133 200 267 334 400 467 534 600 667 lout(mA) PXD20-48D15 90.00 85.00 80.00 18V 75.00 24V %) 36V Eff( 70.00 65.00 60.00 55.00 50.00 67 133 200 267 3lo3u4t(m4A00) 467 534 600 667 9

Feb.2006 20W,DUALOUTPUT b.Efficiencywithlinechangeunderdifferentloadconditionatroomtemperature PXD20-12D15 90.00 85.00 80.00 667mA 334mA 75.00 %) 67mA Eff(70.00 65.00 60.00 55.00 9V 10V 11V 12V 13V 14V 15V 16V 17V 18V Vin(V) PXD20-24D15 90.00 85.00 80.00 1330mA %) 665mA Eff( 75.00 133mA 70.00 65.00 60.00 18V 20V 22V 24V 26V 28V 30V 32V 34V 36V Vin(V) PXD20-48D15 90.00 85.00 80.00 75.00 4000mA Eff(%) 70.00 2040000mmAA 65.00 60.00 55.00 50.00 36V 40V 44V 48V 52V 56V 60V 64V 68V 75V Vin(V) 10

Feb.2006 20W,DUALOUTPUT Powerdissipationcurve PXD20-12D15 3.400 2.800 2.200 w) d( p 1.600 9V 12V 18V 1.000 0.400 67 133 200 267 3lo3u4t(m4A00) 467 534 600 667 PXD20-24D15 3.400 2.800 2.200 w) d( p 1.600 18V 24V 1.000 36V 0.400 67 133 200 267 3lo3u4t(m4A00) 467 534 600 667 PXD20-48D15 4.000 3.500 3.000 w) d( 2.500 p 2.000 36V 1.500 48V 75V 1.000 67 133 200 267 334 400 467 534 600 667 lout(mA) 11

Feb.2006 20W,DUALOUTPUT Outputripple&noise PXD20-12D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad OutputRippleNoise=36.8mV OutputRippleNoise=47.6mV OutputRippleNoise=63.6mV LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad OutputRippleNoise=18.8mV OutputRippleNoise=27.2mV OutputRippleNoise=33.2mV PXD20-24D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad OutputRippleNoise=44.0mV OutputRippleNoise=46.4mV OutputRippleNoise=63.6mV LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad OutputRippleNoise=27.2mV OutputRippleNoise=33.6mV OutputRippleNoise=52.8mV 12

Feb.2006 20W,DUALOUTPUT PXD20-48D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad OutputRippleNoise=23.2mV OutputRippleNoise=27.2mV OutputRippleNoise=30.4mV LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad OutputRippleNoise=16.8mV OutputRippleNoise=18.0mV OutputRippleNoise=21.6mV 13

Feb.2006 20W,DUALOUTPUT TransientPeakandResponse PXD20-12D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad TransientPeak64.0mV TransientPeak62.0mV TransientPeak73.0mV TransientResponse80uS TransientResponse76uS TransientResponse68uS PXD20-24D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad TransientPeak87.0mV TransientPeak103.0mV TransientPeak98.0mV TransientResponse72uS TransientResponse72uS TransientResponse60uS PXD20-48D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad TransientPeak48.0mV TransientPeak47.0mV TransientPeak45.0mV TransientResponse144uS TransientResponse136uS TransientResponse128uS 14

Feb.2006 20W,DUALOUTPUT InrushCurrent PXD20-12D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Inrushcurrent=(26.0/10)X1000mA=2600mA Inrushcurrent=(20.6/10)x1000mA=2060mA Inrushcurrent=(13.6/10)x1000mA=1360mA LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Duration:480uS Duration:320uS Duration:480uS PXD20-24D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Inrushcurrent=(26.0/10)X500mA=1300mA Inrushcurrent=(22.6/10)x500mA=1130mA Inrushcurrent=(18.8/10)x500mA=940mA LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Duration:320uS Duration:240uS Duration:240uS 15

Feb.2006 20W,DUALOUTPUT PXD20-48D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Inrushcurrent=(62.8/10)X200mA=1256mA Inrushcurrent=(47.2/10)x200mA=944mA Inrushcurrent=(31.0/10)x200mA=620mA LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Duration:540uS Duration:420uS Duration:280uS 16

Feb.2006 20W,DUALOUTPUT InputRippleCurrent PXD20-12D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Ripplecurrent=(2.8/10)x10=2.8mA Ripplecurrent=(3.0/10)x10=3.0mA Ripplecurrent=(3.2/10)x10=3.2mA PXD20-24D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Ripplecurrent=(3.2/10)x10=3.2mA Ripplecurrent=(2.8/10)x10=2.8mA Ripplecurrent=(2.6/10)x10=2.6mA PXD20-48D15 LowLine,FullLoad NormalLine,FullLoad HighLine,FullLoad Ripplecurrent=(2.8/10)x10=2.8mA Ripplecurrent=(3.0/10)x10=3.0mA Ripplecurrent=(3.2/10)x10=3.2mA 17

Feb.2006 20W,DUALOUTPUT DelayTimeandRaiseTime PXD20-12D15 NormalLine,FullLoad NormalLine,FullLoad RiseTime=5.382mS DelayTime=6.24mS PXD20-24D15 NormalLine,FullLoad NormalLine,FullLoad RiseTime=5.797mS DelayTime=6.48mS PXD20-48D15 NormalLine,FullLoad NormalLine,FullLoad RiseTime=1.365mS DelayTime=1.56mS 18

Feb.2006 20W,DUALOUTPUT TestConfigurations Inputreflected-ripplecurrentMeasurementTest: Component Value Voltage Reference L 12μH ---- ---- C 100μF 100V AluminumElectrolyticCapacitor Peak-to-peakoutputripple&noiseMeasurementTest: OutputVoltageandEfficiencyMeasurementTest: Note:Allmeasurementsaretakenatthemoduleterminals. V I  Efficiency  o o 100%   V I  in in 19

Feb.2006 20W,DUALOUTPUT PartNumberStructure PXD 20 – 48 D 12 TotalOutputpower 20Watt OutputVoltage InputVoltageRange 12:12V 12 :9~18V 15:15V 24 :18~36V 48 :36~75V DualOutput MechanicalData 1.00(25.4) 0.50 (12.7) 0.40 0.40 0.40 (10.2) (10.2) (10.2) 1.0) PINCONNECTION 4( 0 PIN FUNCTION 0. A. 1 +INPUT DI 2 -INPUT 3 +OUTPUT 3 4 5 4 COMMON 2.00(50.8) BVioetwtom1 2 6 0.80(20.3) 56 -COTRULTP(OUpTtion) 2) 5. 1 0( 6 0. 0.10(2.5) 0.22(5.6) 0.20(5.1) 1.AlldimensionsinInches(mm) 2.Pinpitchtolerance ±0.0014(0.35) 3.Tolerance：x.xx±0.02(x.x±0.5) x.xxx±0.01(x.xx±0.25) 20

Feb.2006 20W,DUALOUTPUT SafetyandInstallationInstruction Isolationconsideration ThePXD20-xxDxxseriesfeatures1.6kVoltDCisolationfrominputtooutput,inputtocase,andoutputtocase.The inputtooutputresistanceisgreaterthan109ohms.Nevertheless,ifthesystemusingthepowermoduleneedsto receivesafetyagencyapproval,certainrulesmustbefollowedinthedesignofthesystemusingthemodel.In particular,allofthecreepageandclearancerequirementsoftheend-usesafetyrequirementmustbeobserved. ThesedocumentsincludeUL-60950-1,EN60950-1andCSA22.2-960,althoughspecificapplicationsmayhaveother oradditionalrequirements. FusingConsideration Caution:Thispowermoduleisnotinternallyfused.Aninputlinefusemustalwaysbeused.Thisencapsulatedpower modulecanbeusedinawidevarietyofapplications,rangingfromsimplestand-aloneoperationtoanintegratedpart ofasophisticatedpowerarchitecture.Tomaximumflexibility,internalfusingisnotincluded;however,toachieve maximumsafetyandsystemprotection,alwaysuseaninputlinefuse.Thesafetyagenciesrequireaslow-blowfuse withmaximumratingof3A.Basedontheinformationprovidedinthisdatasheetoninrushenergyandmaximumdc inputcurrent,thesametypeoffusewithlowerratingcanbeused.Refertothefusemanufacturer’sdataforfurther information. MinimumLoadRequirement 10%(offullload)minimumloadrequired.The10%minimumloadrequirementisinordertomeetallperformance specifications.ThePXD20-xxDxxseriesdoesnotproperlymaintainregulationandoperateunderanoloadcondition. Theoutputvoltagedropsabout10%. MTBFandReliability TheMTBFofPXD20-xxDxxseriesofDC/DCconvertershasbeencalculatedusing: 1.MIL-HDBK-217Funderthefollowingconditions: NominalInputVoltage Io=Io,max Ta=25°C ℃ TheresultingfigureforMTBFis6.842×105hours. 2.Bell-coreTR-NWT-000332CaseI: 50%stress,OperatingTemperatureat40°C ℃ (Groundfixedandcontrolledenvironment) TheresultingfigureforMTBFis1.791×106hours. 21