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| Technical Specification PQ60018QPA60 48 V Input 1.8 V Output 60 A Current 2000 Vdc Isolation Quarter-brick DC/DC Converter The PQ60018QPA60 PowerQorTM Peta Quarter-brick converter is a next-generation, board-mountable, isolated, fixed switching frequency DC/DC converter that uses synchronous rectification to achieve extremely high conversion efficiency. The power dissipated by the converter is so low that a heatsink is not required, which saves cost, weight, height, and application effort. All of the power and control components are mounted to the multi-layer PCB substrate with high-yield surface mount technology. Since the PowerQor converter has no explicit thermal interfaces, it is extremely reliable. The Peta series offers industry leading output currents for any standard quarter-brick module. RoHS Compliant see last page. Operational Features *Ultra-highefficiency,90%halfload,87%fullload *Deliversupto60Aofoutputcurrentwithminimalderating-noheatsinkrequired *Wideinputvoltagerange:35-75V,with100V 100msinputvoltagetransientcapability *FixedfrequencyswitchingprovidespredictableEMI performance *Nominimumloadrequirementmeansnopreloadresistorsrequired PQ60018QPA60 Module Protection Features *Inputunder-voltagelockoutdisablesconverteratlow inputvoltageconditions *Outputcurrentlimitandshortcircuitprotectionprotects converterandloadfromdamageandconsequenthazardousconditions *Activebackbiaslimitpreventsdamagetoconverter fromexternalloadinducedpre-bias *Outputover-voltageprotectionprotectsloadfromdamagingvoltages *Thermalshutdownprotectsconverterfromabnormal environmentalconditions Mechanical Features *Industrystandardquarter-brickpin-outconfiguration *Industrystandardsize:1.45"x2.3"(36.8x58.4mm) *Totalheightlessthan0.45"(11.4mm),permitsbetter airflowandsmallercardpitch *Totalweight:1.5oz(42g) *Flangedpinsdesignedtopermitsurfacemountsoldering(avoidwavesolder)usingFPiPtechnique Safety Features *2000V,30MWinput-to-outputisolationprovides input/outputgroundseparation *UL/cUL60950recognized(US&Canada),basicinsulationrating *TUVcertifiedtoEN60950 *Meets72/23/EECand93/68/EECdirectiveswhich facilitatesCEMarkinginuser'sendproduct *BoardandplasticcomponentsmeetUL94V-0flammabilityrequirements Control Features *On/Offcontrolreferencedtoinputside(positiveand negativelogicoptionsareavailable) *Remotesensefortheoutputvoltagecompensatesfor outputdistributiondrops *Outputvoltagetrimpermitscustomvoltagesandvoltagemargining Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 1 Technical Specification MECHANICAL DIAGRAM 0.14 (3.6) Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick 2.30 (58.4) 0.450 (11.43) 2.00 (50.8) 0.300 (7.62) 0.150 (3.81) 0.43 (10.9) 0.300 1.45 (36.8) 0.600 (15.24) 0.600 (15.24) (7.62) Top View 0.750 (19.05) 0.900 (22.86) Bottom side Clearance See Note 9 0.45 (11.4) Side View 0.056 +.032 (1.42 +.81) Lowest Component Load Board Flanged Pin See Note 10 0.145 (3.68) See Note 3 NOTES 1)Pins1-3,6-8are0.040"(1.02mm)diameterwith0.080" (2.03mm)diameterstandoffshoulders. 2)Pins4-5,9-10are0.062"(1.57mm)diameterwith0.100" (2.54mm)diameterstandoffshoulders. 3)Otherpinextensionlengthsavailable.Recommendedpin lengthis0.03"(0.76mm)greaterthanthePCBthickness. 4)AllPins:Material-CopperAlloy Finish-Tin/LeadoverNickelplate 5)Undimensionedcomponentsareshownforvisualreference only. 6)Alldimensionsininches(mm) Tolerances:x.xx+/-0.02in.(x.x+/-0.5mm) x.xxx+/-0.010in.(x.xx+/-0.25mm) 7)Weight:1.5oz.(42g)typical 8)Workmanship:MeetsorexceedsIPC-A-610CClassII 9)UL/TUVstandardsrequireaclearancegreaterthan0.04" PINDESIGNATIONS PinNo. Name 1 2 3 4 5 6 7 8 9 10 Vin(+) ON/OFF Vin(-) Vout(+) Vout(-) SENSE(-) TRIM SENSE(+) Vout(+) Vout(-) Function Positiveinputvoltage TTLinputtoturnconverter onandoff,referencedto Vin(-),withinternalpullup. Negativeinputvoltage Positive output voltage Negativeoutputvoltage Negativeremotesense1 Outputvoltagetrim2 Positiveremotesense3 Positiveoutputvoltage Negative output voltage (1.02mm)betweeninputandoutputforBasicinsulation.Thisissue shouldbeconsideredifanycoppertracesareonthetopsideof theuser'sboard.Notethattheferritecoresareconsideredpartof theinput/primarycircuit. Pins in Italics Shaded text are Optional Notes: 1.SENSE(-)maybeconnectedtoVout(-)orleftopen. 2.LeaveTRIMpinopenfornominaloutputvoltage. 3.SENSE(+)maybeconnectedtoVout(+)orleftopen. Doc.# 005-2QP618F Rev. B 09/24/08 Page 2 10)Theflangedpinsaredesignedtopermitsurfacemount soldering(avoidingthewavesolderingprocess)through theuseoftheflangedpin-in-pastetechnique. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Technical Specification PQ60018QPA60ELECTRICALCHARACTERISTICS Parameter ABSOLUTE MAXIMUM RATINGS Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick TA=25C,airflowrate=300LFM,Vin=48Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40Cto+100Cambient temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice. Min. -40 -55 -2 35 32 28.5 2.5 1.782 1.745 0 66 1.0 0 4 180 Typ. 48 33 29.5 3.5 45 1.6 150 19 165 2.0\6.6 47 1.800 +0.1\2 +0.1\2 +9 50 10 69 0.9 1.1 10 82 80 190 400 6 200 0 87 90 2000 30 470 Max. 100 80 100 2000 100 125 18 75 34 30.5 4.5 3.6 70 3 0.01 20 1.818 +0.3\5 +0.3\5 +27 1.855 100 30 60 72 3.0 50 30,000 8 240 125 125 125 Units V V V V C C V V V V V A mA mA A 2s mV mA mA A H\F F V %\mV %\mV mV V mV mV A A V A mA F dB mV mV s ms ms % % % C C C V MW pF Notes & Conditions Continuous Continuous 100mstransient,squarewave Basicinsulation,PollutionDegree2 INPUT CHARACTERISTICS InputVoltage Non-Operating Operating OperatingTransientProtection IsolationVoltage(inputtooutput) OperatingTemperature StorageTemperature VoltageatON/OFFinputpin OperatingInputVoltageRange InputUnder-VoltageLockout Turn-OnVoltageThreshold Turn-OffVoltageThreshold LockoutVoltageHysteresis MaximumInputCurrent No-LoadInputCurrent DisabledInputCurrent InrushCurrentTransientRating ResponsetoInputTransient InputReflectedRippleCurrent InputTerminalRippleCurrent RecommendedInputFuse InputFilterComponentValues(L\C) RecommendedExternalInputCapacitance 100%Load,35Vin OUTPUT CHARACTERISTICS Internalvalues,seeFigureE TypicalESR0.1-0.2W,seeFigure17 1000V/msinputtransient P-Pthru10Hinductor;Figures17&19 RMS;Figures17&18 Fastblowexternalfuserecommended DYNAMIC CHARACTERISTICS OutputVoltageSetPoint OutputVoltageRegulation OverLine OverLoad OverTemperature TotalOutputVoltageRange OutputVoltageRippleandNoise1 Peak-to-Peak RMS OperatingOutputCurrentRange OutputDCCurrent-LimitInception OutputDCCurrent-LimitShutdownVoltage Back-DriveCurrentLimitwhileEnabled Back-DriveCurrentLimitwhileDisabled MaximumOutputCapacitance Oversample,line,load,temperature&life 500MHzbandwidth;Figures17&20 FullLoad,seeFigures17&20 FullLoad,seeFigures17&20 Subjecttothermalderating;Figures5-12 OutputVoltage10%Low Negativecurrentdrawnfromoutput Negativecurrentdrawnfromoutput 1.8Voutat60AResistiveLoad 120Hz;Fig.26 50%to75%to50%Ioutmax;Figure15 50%to75%to50%Ioutmax;Figure16 Towithin1%Voutnom Fullload,Vout=90%nom.;Figures13&14 -40Cto+125C;FigureF 30,000Floadcapacitance,Iout=0A Figures1-4 Figures1-4 Packageratedto150C ULratedmaxoperatingtemp130C SeeFigures5-12forderatingcurves EFFICIENCY InputVoltageRippleRejection OutputVoltageduringLoadCurrentTransient ForaStepChangeinOutputCurrent(0.1A/s) ForaStepChangeinOutputCurrent(1A/s) SettlingTime Turn-OnTransient Turn-OnTime Start-UpInhibitTime OutputVoltageOvershoot 100%Load 50%Load TEMPERATURE LIMITS FOR POWER DERATING CURVES ISOLATION CHARACTERISTICS SemiconductorJunctionTemperature BoardTemperature TransformerTemperature IsolationVoltage(dielectricstrength) IsolationResistance IsolationCapacitance2 Note1:Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQorapplicationssupport(e-mail:support@synqor.com) Note2:Highervaluesofisolationcapacitancecanbeaddedexternaltothemodule. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 3 Technical Specification ELECTRICALCHARACTERISTICS(Continued) Parameter P FEATURE CHARACTERISTICS Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick Min. 180 -2 2.4 2.4 -2 -20 122 Typ. 200 Vin/6.5 40 123 125 10 1600 2.37 1.75 Max. 220 0.8 18 18 0.8 9.2 +10 +10 125 Units kHz V V V V V kW % % % C C 6 Notes & Conditions RegulationstageandIsolationstage RELIABILITY CHARACTERISTICS SwitchingFrequency ON/OFFControl(OptionP) Off-StateVoltage On-StateVoltage ON/OFFControl(OptionN) Off-StateVoltage On-StateVoltage ON/OFFControl(EitherOption) Pull-UpVoltage Pull-UpResistance OutputVoltageTrimRange OutputVoltageRemoteSenseRange OutputOver-VoltageProtection Over-TemperatureShutdown Over-TemperatureShutdownRestartHysteresis LoadCurrentScaleFactor CalculatedMTBF(Telcordia) CalculatedMTBF(MIL-217) FieldDemonstratedMTBF FiguresA,B MeasuredacrossPins9&5;FigureC MeasuredacrossPins9&5 Overfulltemprange;%ofnominalVout AveragePCBTemperature SeeAppNote:OutputLoadCurrentCalc. 10 Hrs. TR-NWT-000332;80%load,200LFM,40oCTa 106Hrs. MIL-HDBK-217F;80%load,200LFM,40oCTa 106Hrs. Seewebsiteforlatestvalues STANDARDSCOMPLIANCE Parameter P Notes File#E194341,Basicinsulation&pollutiondegree2 CertifiedbyTUV Testonentireassembly;board&plasticcomponentsUL94V-0compliant ESDtest,8kV-NP,15kVair-NP(NormalPerformance) Section7-electricalsafety,Section9-bonding/grounding STANDARDS COMPLIANCE UL/cUL60950 EN60950 72/23/EEC 93/68/EEC NeedleFlameTest(IEC695-2-2) IEC61000-4-2 GR-1089-CORE Telcordia(Bellcore)GR-513 *Anexternalinputfusemustalwaysbeusedtomeetthesesafetyrequirements.ContactSynQorforofficialsafety certificatesonnewreleasesordownloadfromtheSynQorwebsite. QUALIFICATIONTESTING Parameter P # Units 32 5 5 10 5 5 5 15pins Test Conditions 10-55Hzsweep,0.060"totalexcursion,1min./sweep,120sweepsfor3axis QUALIFICATION TESTING LifeTest Vibration MechanicalShock TemperatureCycling Power/ThermalCycling DesignMarginality Humidity Solderability 95%ratedVinandload,unitsatderatingpoint,1000hours 100gminimum,2dropsinxandyaxis,1dropinzaxis -40Cto100C,unittemp.ramp15C/min.,500cycles Toperating=mintomax,Vin=mintomax,fullload,100cycles Tmin-10CtoTmax+10C,5Csteps,Vin=mintomax,0-105%load 85C,85%RH,1000hours,2minutesonand6hoursoff MIL-STD-883,method2003 *ExtensivecharacterizationtestingofallSynQorproductsandmanufacturingprocessesisperformedtoensurethatwesupply robust,reliableproduct.Contactfactoryforofficialproductfamilyqualificationdocument. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 4 Technical Specification 95 92 91 Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick 90 90 Efficiency (%) Efficiency (%) 85 89 88 87 86 85 84 80 75 35 Vin 48 Vin 75 Vin 25 C 40 C 55 C 70 65 0 5 10 15 20 25 30 35 40 45 50 55 60 0 100 200 300 400 500 Load Current (A) Air Flow (LFM) Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C. Figure 2: Efficiency at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25C, 40C, and 55C (nominal input voltage). 9 18 16 Power Dissipation (W) 14 12 10 8 6 35 Vin 4 2 0 0 5 10 15 20 25 30 35 40 45 50 55 60 48 Vin 75 Vin Power Dissipation (W) 8 7 6 5 25 C 40 C 55 C 4 0 100 200 300 400 500 Load Current (A) Air Flow (LFM) Figure 3: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C. Figure 4: Power dissipation at nominal output voltage and 60% rated power vs. airflow rate for ambient air temperatures of 25C, 40C, and 55C (nominal input voltage). 60 55 50 45 40 Iout (A) 35 30 25 20 15 10 5 0 0 25 40 55 70 85 Ambient Air Temperature (C) 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) Figure 5: Maximum output power derating curves vs. ambient air temperature for airflow rates of 50 LFM through 400 LFM with air flowing from output to input (nominal input voltage and 2 output pins). Product # PQ60018QPA60 Phone 1-888-567-9596 Figure 6: Thermal plot of converter at 56 amp load with 55C air flowing from output to input at the rate of 200 LFM with nominal Vin and 2 output pins. Test board is 4oz., 6 layer. Converter PCB is 6oz., 12 layer. Doc.# 005-2QP618F Rev. B 09/24/08 Page 5 www.synqor.com Technical Specification 60 55 50 45 40 Iout (A) 35 30 25 20 15 10 5 0 0 25 40 55 70 85 Ambient Air Temperature (C) Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) Figure 7: Maximum output power derating curves vs. ambient air temperature for airflow rates of 50 LFM through 400 LFM with air flowing from pin 3 to pin 1 (nominal input voltage and 2 output pins). 60 55 50 45 40 Iout (A) 35 30 25 20 15 10 5 0 0 25 40 55 Ambient Air Temperature (C) 70 85 Figure 8: Thermal plot of converter at 55 amp load with 55C air flowing from pin 3 to pin 1 at the rate of 200 LFM with nominal Vin and 2 output pins. Test board is 4oz., 6 layer. Converter PCB is 6oz., 12 layer. 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) Figure 9: Maximum output power derating curves vs. ambient air temperature for airflow rates of 50 LFM through 400 LFM with air flowing from output to input (nominal input voltage and 4 output pins). 60 55 50 45 40 Iout (A) 35 30 25 20 15 10 5 0 0 25 40 55 70 85 Ambient Air Temperature (C) Figure 10: Thermal plot of converter at 60 amp load with 55C air flowing from output to input at the rate of 200 LFM with nominal Vin and 4 output pins. Test board is 4oz., 6 layer. Converter PCB is 6oz., 12 layer. 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s) 50 LFM (0.25 m/s) Figure 11: Maximum output power derating curves vs. ambient air temperature for airflow rates of 50 LFM through 400 LFM with air flowing from pin 3 to pin 1 (nominal input voltage and 4 output pins). Product # PQ60018QPA60 Phone 1-888-567-9596 Figure 12: Thermal plot of converter at 60 amp load with 55C air flowing from pin 3 to pin 1 at the rate of 200 LFM with nominal Vin and 4 output pins. Test board is 4oz., 6 layer. Converter PCB is 6oz., 12 layer. Doc.# 005-2QP618F Rev. B 09/24/08 Page 6 www.synqor.com Technical Specification Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick Figure 13: Turn-on transient at full rated load (resistive load) (2 ms/ div) Input voltage pre-applied. Ch 1: Vout (1V/div). Ch 2: ON/OFF input (5V/div) Figure 14: Turn-on transient at zero load current (2 ms/div). Ch 1: Vout (1V/div) Ch 2: ON/OFF input (5V/div) Figure 15: Output voltage response to step-change in load current (50%75%-50% of Iout(max); dI/dt = 0.1A/s). Load cap: 10F, 100 mW ESR tantalum cap and 1F ceramic cap. Ch 1: Vout (100mV/div), Ch 2: Iout (20A/div). Figure 16: Output voltage response to step-change in load current (50%75%-50% of Iout(max): dI/dt = 1A/s). Load cap: 470F, 30 mW ESR tantalum cap and 1F ceramic cap. Ch 1: Vout (500mV/div), Ch 2: Iout (20A/div). See Fig. 15 source impedance 10H See Fig. 14 See Fig. 16 iS VSOURCE iC DC/DC Converter 1F VOUT 10F, electrolytic capacitor 47F, @1WESR ceramic 100mWESR capacitor tantalum capacitor Figure 17: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 18), Input Reflected Ripple Current (Figure 19) and Output Voltage Ripple (Figure 20). Product # PQ60018QPA60 Phone 1-888-567-9596 Figure 18: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 10H source impedance and 47F electrolytic capacitor (200 mA/div). See Figure 17. Doc.# 005-2QP618F Rev. B 09/24/08 Page 7 www.synqor.com Technical Specification Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick Figure 19: Input reflected ripple current, is, through a 10 H source inductor at nominal input voltage and rated load current (10 mA/div). See Figure 17. Figure 20: Output voltage ripple at nominal input voltage and rated load current (50 mV/div). Load capacitance: 1F ceramic capacitor and 15F tantalum capacitor. Bandwidth: 500 MHz. See Figure 17. Figure 21: Output voltage response to step-change in input voltage (50V to 100V in 40s). Load cap: 10F, 100 mW ESR tantalum capacitor and 1F ceramic cap. Ch 1: Vout (200mV/div), Ch 2: Vin (20V/div). 2.0 Figure 22: Load current (20A/div) as a function of time when the converter attempts to turn on into a 1 mW short circuit. Bottom trace (5ms/ div) is an expansion of the on-time portion of the top trace. 10 9 1.5 Output Voltage (V) Vout Trim-up (%) 8 7 6 5 4 3 1.0 35 V 0.5 48 V 75 V 0.0 0 10 20 30 40 50 Load Current (A) 60 70 80 100% Load 2 1 0 40.0 39.5 39.0 38.5 38.0 37.5 37.0 36.5 36.0 35.5 35.0 Input Voltage (V) 50% Load 0% Load Figure 23: Output voltage vs. load current showing typical current limit curves and converter shutdown points. Figure 24: Achievable trim-up percentage vs. input voltage at output loads of 0%, 50% and full load. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 8 Technical Specification 0.01 -20 Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick Forward Transmission (dB) 35 Vin 48 Vin 75 Vin Output Impedance (W) -30 -40 -50 -60 -70 -80 -90 35 Vin 48 Vin 75 Vin 0.001 10 100 1,000 Hz 10,000 100,000 -100 10 100 1,000 Hz 10,000 100,000 Figure 25: Magnitude of incremental output impedance (Zout = vout/ iout) for minimum, nominal, and maximum input voltage at full rated power. 0 -5 -10 Reverse Transmission (dB) -15 -20 -25 -30 -35 -40 -45 -50 10 100 1,000 Hz 10,000 100,000 Figure 26: Magnitude of incremental forward transmission (FT = vout/ vin) for minimum, nominal, and maximum input voltage at full rated power. 100 35 Vin 48 Vin Input Impedance (W) 75 Vin 35 Vin 48 Vin 75 Vin 10 1 0.1 10 100 1,000 Hz 10,000 100,000 Figure 27: Magnitude of incremental reverse transmission (RT = iin/ iout) for minimum, nominal, and maximum input voltage at full rated power. Figure 28: Magnitude of incremental input impedance (Zin = vin/iin) for minimum, nominal, and maximum input voltage at full rated power. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 9 Technical Specification BASICOPERATIONANDFEATURES The PowerQor series converter uses a two-stage power conversion topology. The first stage is a buck-converter that keeps the outputvoltageconstantovervariationsinline,load,andtemperature.Thesecondstageusesatransformertoprovidethefunctions of input/output isolation and voltage step-down to achieve the lowoutputvoltagerequired. Boththefirststageandthesecondstageswitchatafixedfrequency forpredictableEMIperformance.Rectificationofthetransformer's outputisaccomplishedwithsynchronousrectifiers.Thesedevices, whichareMOSFETswithaverylowon-stateresistance,dissipate farlessenergythanSchottkydiodes.Thisistheprimaryreasonthat thePowerQorconverterhassuchhighefficiency,evenatverylow outputvoltagesandveryhighoutputcurrents. Dissipation throughout the converter is so low that it does not requireaheatsinkforoperation.Sinceaheatsinkisnotrequired, the PowerQor converter does not need a metal baseplate or potting material to help conduct the dissipated energy to the heatsink.ThePowerQorconvertercanthusbebuiltmoresimply andreliablyusinghighyieldsurfacemounttechniquesonaPCB substrate. The PowerQor series of half-brick, quarter-brick and eighthbrickconvertersusestheindustrystandardfootprintandpin-out configuration. Input: Output: Current: Package: CONTROLFEATURES 35 - 75 V 1.8 V 60 A Quarter-brick REMOTE ON/OFF (Pin 2):TheON/OFFinput,Pin2,permits the user to control when the converter is on or off. This input is referencedtothereturnterminaloftheinputbus,Vin(-).There are two versions of the converter that differ by the sense of the logicusedfortheON/OFFinput. In the positive logic version, the ON/OFF input is active high (meaningthatahighturnstheconverteron).Inthenegativelogic version, the ON/OFF signal is active low (meaning that a low turnstheconverteron).FigureAdetailsfivepossiblecircuitsfor drivingtheON/OFFpin.FigureBisadetailedlookoftheinternalON/OFFcircuitry. REMOTE SENSE(+) (Pins 8 and 6): The SENSE(+) inputs correct for voltage drops along the conductors that connect the converter'soutputpinstotheload. Pin8shouldbeconnectedtoVout(+)andPin6shouldbeconnected to Vout(-) at the point on the board where regulation is desired.Aremoteconnectionattheloadcanadjustforavoltage droponlyaslargeasthatspecifiedinthisdatasheet,thatis [Vout(+)-Vout(-)]-[Vsense(+)-Vsense(-)]< SenseRange%xVout Pins8and6mustbeconnectedforproperregulationoftheoutput voltage.Iftheseconnectionsarenotmade,theconverterwilldeliveranoutputvoltagethatisslightlylowerthanitsspecifiedvalue. Note: the output over-voltage protection circuit senses the voltage acrosstheoutput(pins9and5)todeterminewhenitshouldtrigger, notthevoltageacrosstheconverter'ssenseleads(pins8and6). Therefore,theresistivedropontheboardshouldbesmallenough sothatoutputOVPdoesnottrigger,evenduringloadtransients. ON/OFF ON/OFF ON/OFF Vin(_) RemoteEnableCircuit Vin(_) NegativeLogic (PermanentlyEnabled) ON/OFF TTL/ CMOS Vin(_) PositiveLogic (PermanentlyEnabled) Vin(+) 274k ON/OFF 50k 5V 5V ON/OFF TTL 100pF 50k Vin(_) OpenCollectorEnableCircuit Vin(_) DirectLogicDrive Vin(_) Figure A: Various circuits for driving the ON/OFF pin. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Figure B: Internal ON/OFF pin circuitry Doc.# 005-2QP618F Rev. B 09/24/08 Page 10 Technical Specification OUTPUT VOLTAGE TRIM (Pin 7):TheTRIMinputpermitsthe user to adjust the output voltage across the sense leads up or downaccordingtothetrimrangespecifications. Todecreasetheoutputvoltage,theusershouldconnectaresistor betweenPin7andPin6(SENSE(-)input).Foradesireddecrease ofthenominaloutputvoltage,thevalueoftheresistorshouldbe Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick ItisnotnecessaryfortheusertoaddcapacitanceattheTrimpin. Thenodeisinternallybypassedtoeliminatenoise. Total DC Variation of Vout:Fortheconvertertomeetitsfull specifications, the maximum variation of the DC value of Vout, duetobothtrimmingandremoteloadvoltagedrops,shouldnot begreaterthanthatspecifiedfortheoutputvoltagetrimrange. Rtrim-down= where 511 -10.22 (kW) D% () PROTECTIONFEATURES Input Under-Voltage Lockout:Theconverterisdesignedto turnoffwhentheinputvoltageistoolow,helpingavoidaninput systeminstabilityproblem,describedinmoredetailintheapplicationnotetitled"InputSystemInstability".Thelockoutcircuitryisa comparatorwithDChysteresis.Whentheinputvoltageisrising,it mustexceedthetypicalTurn-OnVoltageThresholdvalue(listedon thespecificationpage)beforetheconverterwillturnon.Oncethe converterison,theinputvoltagemustfallbelowthetypicalTurnOffVoltageThresholdvaluebeforetheconverterwillturnoff. Output Current Limit: The maximum current limit remains constantastheoutputvoltagedrops.However,oncetheimpedance of the short across the output is small enough to make the outputvoltagedropbelowthespecifiedOutputDCCurrent-Limit ShutdownVoltage,theconverterturnsoff. The converter then enters a "hiccup mode" where it repeatedly turns on and off at a 5 Hz (nominal) frequency with a 5% duty cycle until the short circuit condition is removed. This prevents excessiveheatingoftheconverterortheloadboard. Output Over-Voltage Limit: If the voltage across the output pins exceeds the Output Over-Voltage Protection threshold, the converterwillimmediatelystopswitching.Thispreventsdamage totheloadcircuitdueto1)excessiveseriesresistanceinoutput currentpathfromconverteroutputpinstosensepoint,2)arelease ofashort-circuitcondition,or3)areleaseofacurrentlimitcondition. Load capacitance determines exactly how high the output voltagewillriseinresponsetotheseconditions.After200msthe converterwillautomaticallyrestart. Over-Temperature Shutdown:Atemperaturesensoronthe convertersensestheaveragetemperatureofthemodule.Thethermalshutdowncircuitisdesignedtoturntheconverteroffwhenthe temperatureatthesensedlocationreachestheOver-Temperature Shutdownvalue.Itwillallowtheconvertertoturnonagainwhen thetemperatureofthesensedlocationfallsbytheamountofthe Over-TemperatureShutdownRestartHysteresisvalue. D% = Vnominal-Vdesired x100% Vnominal Toincreasetheoutputvoltage,theusershouldconnectaresistor betweenPin7andPin8(SENSE(+)input).Foradesiredincrease ofthenominaloutputvoltage,thevalueoftheresistorshouldbe Rtrim-up = where ( 5.11VOUT(100+D%) _511 _ 1.225D% D% 10.22 ) (kW) VOUT=NominalOutputVoltage Figure C graphs the relationship between the trim resistor value andRtrim-upandRtrim-down,showingthetotalrangetheoutput voltagecanbetrimmedupordown. 10,000 Trim Resistance (kOhms) 1,000 100 10 0 2 4 6 8 10 12 14 16 18 20 % increase Vout % decrease Vout Figure C: Trim Graph for 1.8Vout module Note: the TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the output voltage too high may cause the over-voltage protection circuittoengage,particularlyduringtransients. Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 11 Technical Specification APPLICATIONCONSIDERATIONS Input System Instability:Thisconditioncanoccurbecause any DC/DC converter appears incrementally as a negative resistanceload.Adetailedapplicationnotetitled"InputSystem Instability"isavailableontheSynQorwebsite(www.synqor. com) which provides an understanding of why this instability arises,andshowsthepreferredsolutionforcorrectingit. Application Circuits:FigureDbelowprovidesatypicalcircuit diagramwhichdetailstheinputfilteringandvoltagetrimming. Input Filtering and External Capacitance:FigureEbelow providesadiagramshowingtheinternalinputfiltercomponents. Thisfilterdramaticallyreducesinputterminalripplecurrent,which otherwise could exceed the rating of an external input electrolyticcapacitor.Therecommendedexternalinputcapacitanceis specified in the "Input Characteristics" section. More detailed information is available in the application note titled "EMI Input: Output: Current: Package: Characteristics"ontheSynQorwebsite. 35 - 75 V 1.8 V 60 A Quarter-brick Startup Inhibit Period:TheStartupInhibitPeriodensuresthat theconverterwillremainoffforapproximately200mswhenitis shutdownforanyreason.Whenanoutputshortispresent,this generates a 5Hz "hiccup mode," which prevents the converter fromoverheating.Inall,therearesevenwaysthattheconverter canbeshutdown,initiatingaStartupInhibitPeriod: *InputUnder-VoltageLockout *InputOver-VoltageShutdown(notpresentinQuarter-brick) *OutputOver-VoltageProtection *OverTemperatureShutdown *CurrentLimit *ShortCircuitProtection *TurnedoffbytheON/OFFinput Vin(+) External Input Filter Electrolytic Capacitor Vout(+) Vsense(+) Rtrim-up or Vin 47F ON/OFF Trim Vsense(_) Vin(_) Vout(_) Rtrim-down Cload Iload Figure D: Typical application circuit (negative logic unit, permanently enabled). L Vin(+) C Vin(_) Figure E: Internal Input Filter Diagram (component values listed on page 3). Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 12 Technical Specification Figure F shows three turn-on scenarios, where a Startup Inhibit Periodisinitiatedatt0,t1,andt2: Beforetimet0,whentheinputvoltageisbelowtheUVLthreshold, the unit is disabled by the Input Under-Voltage Lockout feature. WhentheinputvoltagerisesabovetheUVLthreshold,theInput Under-VoltageLockoutisreleased,andaStartupInhibitPeriodis initiated.Attheendofthisdelay,theON/OFFpinisevaluated, andsinceitisactive,theunitturnson. Input: Output: Current: Package: 35 - 75 V 1.8 V 60 A Quarter-brick Attimet1,theunitisdisabledbytheON/OFFpin,anditcannot beenabledagainuntiltheStartupInhibitPeriodhaselapsed. When the ON/OFF pin goes high after t2, the Startup Inhibit Period has elapsed, and the output turns on within the typical Turn-OnTime. Vin Under-Voltage LockoutTurn-On Threshold ON/OFF (poslogic) ON OFF ON OFF ON 4ms(typical Vout (typicalstart-up inhibitperiod) 200ms turnontime) 200ms 200ms t0 t1 t2 t Figure F: Startup Inhibit Period (turn-on time not to scale) Product # PQ60018QPA60 Phone 1-888-567-9596 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 13 Technical Specification PART NUMBERING SYSTEM The part numbering system for SynQor's dc-dc converters follows the format shown in the example below. PQ 60 0 18 Q P A 6 0 NKS 6/6RoHS Options(see OrderingInformation) Input: Output: Current: Package: ORDERING INFORMATION 35 - 75 V 1.8 V 60 A Quarter-brick The tables below show the valid model numbers and ordering options for converters in this product family. When ordering SynQor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional 3 characters for options. A "-G" suffix indicates the product is 6/6 RoHS compliant. Model Number PQ60010QPA60xyz PQ60010QPA60xyz PQ60010QPA60xyz PQ60010QPA60xyz PQ60010QPA60xyz PQ60010QPA45xyz Input Voltage 35 - 75 V 35 - 75 V 35 - 75 V 35 - 75 V 35 - 75 V 35 - 75 V Output Voltage 1.0 V 1.2 V 1.5 V 1.8 V 2.5 V 3.3 V Maximum Output Current 60 A 60 A 60 A 60 A 60 A 45 A OutputCurrent ThermalDesign PerformanceLevel PackageSize OutputVoltage InputVoltage ProductFamily The first 12 characters comprise the base part number and the last 3 characters indicate available options. The "-G" suffix indicates 6/6 RoHS compliance. The following options must be included in place of the x y z spaces in the model numbers listed above. Options Description: x y z Enable Logic P - Positive N - Negative Pin Style K - 0.110" N - 0.145" R - 0.180" Y - 0.250" Feature Set S - Standard 2 - Two sets of Output Pins Application Notes A variety of application notes and technical white papers can be downloaded in pdf format from our website. RoHS Compliance: The EU led RoHS (Restriction of Hazardous Substances) Directive bans the use of Lead, Cadmium, Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor product is 6/6 RoHS compliant. For more information please refer to SynQor's RoHS addendum available at our RoHS Compliance / Lead Free Initiative web page or e-mail us at rohs@synqor.com. Not all combinations make valid part numbers, please contact SynQorforavailability. PATENTS SynQor holds the following patents, one or more of which might apply to this product: 5,999,417 6,594,159 6,927,987 7,119,524 6,222,742 6,731,520 7,050,309 7,269,034 6,545,890 6,894,468 7,072,190 7,272,021 6,577,109 6,896,526 7,085,146 7,272,023 Contact SynQor for further information: Phone: Toll Free: Fax: E-mail: Web: Address: 978-849-0600 888-567-9596 978-849-0602 power@synqor.com www.synqor.com 155 Swanson Road Boxborough, MA 01719 USA Phone 1-888-567-9596 Warranty SynQor offers a three (3) year limited warranty. Complete warranty information is listed on our website or is available upon request from SynQor. Information furnished by SynQor is believed to be accurate and reliable. However, no responsibility is assumed by SynQor for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SynQor. Product # PQ60018QPA60 www.synqor.com Doc.# 005-2QP618F Rev. B 09/24/08 Page 14 |
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