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9-75 V 100 V 1.8-48 V
Outputs
M
ARY IN
Technical Specification
IQ32-HPC Family
2250 V dc
Isolation
165 W
Max Power
Half-brick
DC-DC Converter
Continuous Input Transient Input
The InQor(R) Half-brick converter series is composed of next-generation, board-mountable, isolated, fixed switching frequency dc-dc converters that use synchronous rectification to achieve extremely high power conversion efficiency. Each module is supplied completely encased to provide protection from the harsh environments seen in many industrial and transportation applications. Operational Features
* Highefficiencies,upto88%atfullratedloadcurrent * Deliversfullpowerwithminimalderating-noheatsinkrequired * Operatinginputvoltagerange: 9 - 75 V, 100 V transient for 100 ms * FixedfrequencyswitchingprovidespredictableEMI * Nominimumloadrequirement
Mechanical Features
* IndustrystandardHalf-brickpin-outconfiguration * Standardsize:2.390"x2.490"x0.512" (60.6x63.1x13.0mm) * Totalweight:5oz(142g)
Protection Features
* Inputunder-voltagelockout * Inputover-voltageshutdown * Outputcurrentlimitandshortcircuitprotection * Activebackbiaslimit * Outputover-voltageprotection * Thermalshutdown
Control Features
* On/Offcontrolreferencedtoinputside * Remotesensefortheoutputvoltage * Outputvoltagetrimrangeof-20%,+10%
COnTenTS
MechanicalDrawing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2 IQ32-HPCFamilyElectricalCharacteristics . . . . . . . . . . . . . . . . . . . . 3-4 IQ32-HPCFamilyFigures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 IQ32018HPC55(1.8V,55A)AvailableintheFuture . . . . . . . . . . . . . . . . IQ32033HPC45(3.3V,45A)AvailableintheFuture . . . . . . . . . . . . . . . . IQ32050HPC32(5.0V,32A)AvailableintheFuture . . . . . . . . . . . . . . . . IQ32120HPC13(12V,13A)AvailableintheFuture . . . . . . . . . . . . . . . . . IQ32150HPC11(15V,11A)AvailableintheFuture . . . . . . . . . . . . . . . . . IQ32240HPC6H(24V,6.7A)AvailableintheFuture . . . . . . . . . . . . . . . . IQ32280HPC5I(28V,5.8A)AvailableintheFuture. . . . . . . . . . . . . . . . . IQ32400HPC04(40V,4.0A)AvailableintheFuture . . . . . . . . . . . . . . . . IQ32480HPC3E(48V,3.4A)CharacteristicsandFigures . . . . . . . . . .6 - 7 ApplicationNotes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8-11 OrderingInformation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Doc.# 005-005H332 Rev. 1 08/13/08
PageNo.
Safety Features
* 2250V,30MW input-to-output isolation * UL/cUL60950-1recognized(US&Canada), basic insulation rating * TUVcertifiedtoEN60950-1 * Meets72/23/EECand93/68/EECdirectiveswhichfacilitates CEMarkinginuser'sendproduct * BoardandplasticcomponentsmeetUL94V-0standard * RoHScompliant(seelastpage)
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Page 1
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MECHANICALDIAGRAM
M
ARY IN
Technical Specification
IQ32-HPC Family
NOTES
PINDESIGNATIONS
Pin No.
1 2 3 4 5 6 7 8
Notes: 1. SENSE(-)shouldbeconnectedtoVout(-)eitherremotelyoratthe converter. 2. LeaveTRIMpinopenfornominaloutputvoltage. 3. SENSE(+)shouldbeconnectedtoVout(+)eitherremotelyoratthe converter.
1)Pins1-3,5-7are0.040"(1.02mm)diameterwith0.080" (2.03mm)diameterstandoffshoulders. 2)Pins4and8are0.080"(2.03mm)diameterwith0.125" (3.18mm)diameterstandoffshoulders. 3)Recommendedpinlengthis0.03"(0.76mm)greaterthanthe PCBthickness. 4)AllPins:Material-CopperAlloy;Finish-MatteTinoverNickel plate 5)Undimensionedcomponentsshownareforvisualreferenceonly. 6)Weight: 5oz.(142g)typical 7)Alldimensionsininches(mm) Tolerances: x.xx+/-0.02in.(x.x+/-0.5mm) x.xxx+/-0.010in.(x.xx+/-0.25mm) 8)Workmanship:MeetsorexceedscurrentIPC-A-610ClassII 9)Appliedtorqueperscrewshouldnotexceed6in-lb.(0.7Nm). 10)Baseplateflatnesstoleranceis0.004"(.10mm)TIRforsurface.
Name
Vin(+) ON/OFF Vin(-) Vout(-) SENSE(-) TRIM SENSE(+) Vout(+)
Function
Positive input voltage TTLinputtoturnconverter on and off, referenced to Vin(-)withinternalpullup Negativeinputvoltage Negativeoutputvoltage Negativeremotesense 1 Outputvoltagetrim 2 Positive remote sense 3 Positive output voltage
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Page 2
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M
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Technical Specification
IQ32-HPC Family
IQ32 FAMILY eLeCTRICAL CHARACTeRISTICS (all output voltages)
Ta=25C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40Cto+100Cbaseplate temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter
Min.
Typ.
Max.
Units notes & Conditions
V V V V dc V dc V dc C C V V Continuous Continuous 100 ms
ABSOLUTe MAXIMUM RATInGS Input Voltage Non-Operating 100 Operating 75 OperatingTransientProtection 100 Isolation Voltage InputtoOutput 2250 InputtoBase-Plate 2250 OutputtoBase-Plate 2250 OperatingTemperature -40 100 StorageTemperature -55 125 VoltageatON/OFFinputpin -2 18 InPUT CHARACTeRISTICS OperatingInputVoltageRange 9 32 75 InputUnder-VoltageLockout Turn-OnVoltageThreshold 11.0 11.2 11.5 Turn-OffVoltageThreshold 8.1 8.4 8.7 LockoutVoltageHysteresis 2.8 InputOver-VoltageShutdown RecommendedExternalInputCapacitance 470 InputFilterComponentValues(L\C) 0.34\13.2 DYnAMIC CHARACTeRISTICS Turn-OnTransient Turn-OnTime 10 Start-UpInhibitTime 200 230 250 OutputVoltageOvershoot 0 ISOLATIOn CHARACTeRISTICS IsolationVoltage(dielectricstrength) IsolationResistance 30 IsolationCapacitance(inputtooutput) 1000 TeMPeRATURe LIMITS FOR POWeR DeRATInG CURVeS SemiconductorJunctionTemperature 125 BoardTemperature 125 Transformer Temperature 125 MaximumBaseplateTemperature,Tb 100 FeATURe CHARACTeRISTICS SwitchingFrequency 255 275 295 ON/OFFControl Off-StateVoltage 2.4 18 On-StateVoltage -2 0.8 ON/OFFControl Pull-UpVoltage 5 Pull-UpResistance 50 Over-TemperatureShutdownOTPTripPoint 125 Over-TemperatureShutdownRestartHysteresis 10 ReLIABILITY CHARACTeRISTICS CalculatedMTBF(Telcordia)TR-NWT-000332 TBD CalculatedMTBF(MIL-217)MIL-HDBK-217F TBD FieldDemonstratedMTBF Note1:Start-upguaranteedabove11.5V,butwilloperatedownto9V Note2:Highervaluesofisolationcapacitancecanbeaddedexternaltothemodule.
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Baseplatetemperature
100V,100msTransient;SeeNote1
V V V V NotAvailable F TypicalESR0.1-0.2 H\F Internalvalues;seeFigureE
ms ms %
Fullload,Vout=90%nom. -40Cto+125C;FigureF MaximumOutputCapacitance SeeAbsoluteMaximumRatings
M pF C C C C kHz V
SeeNote2 Packageratedto150C ULratedmaxoperatingtemp130C
Isolation stage switching freq. is half this
ApplicationnotesFiguresA&B V k C C
AveragePCBTemperature
106 Hrs. 80%load,200LFM,40CTa 106 Hrs. 80%load,200LFM,40CTa 106 Hrs. Seeourwebsitefordetails
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STANDARDSCOMPLIANCE
STANDARDSCOMPLIANCE UL/cUL60950-1 EN60950-1 NeedleFlameTest(IEC695-2-2) IEC61000-4-2
M
ARY IN
Technical Specification
IQ32-HPC Family
Parameter
Notes&Conditions
File#E194341,Basicinsulation CertifiedbyTUV Testonentireassembly;board&plasticcomponentsUL94V-0compliant ESDtest,8kV-NP,15kVair-NP(NormalPerformance)
Note:Anexternalinputfusemustalwaysbeusedtomeetthesesafetyrequirements.ContactSynQorforofficialsafetycertificatesonnew releasesordownloadfromtheSynQorwebsite.
QUALIFICATIONTESTING
QUALIFICATIONTESTING LifeTest Vibration MechanicalShock TemperatureCycling Power/ThermalCycling DesignMarginality Humidity Solderability
Parameter
#Units
32 5 5 10 5 5 5 15 pins
TestConditions
95%ratedVinandload,unitsatderatingpoint,1000hours 10-55Hzsweep,0.060"totalexcursion,1min./sweep,120sweepsfor3axis 100gminimum,2dropsinxandyaxis,1dropinzaxis -40Cto100C,unittemp.ramp15C/min.,500cycles Toperating = min to max, Vin = min to max, full load, 100 cycles Tmin-10CtoTmax+10C,5Csteps,Vin=mintomax,0-105%load 85C,85%RH,1000hours,continuousVinappliedexcept5min/day MIL-STD-883,method2003
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Page 4
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M
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Technical Specification
IQ32-HPC Family
IQ32 FAMILY FIGUReS (all output voltages)
120
Nominal Vout
Typical Current Limit Inception Point 100
Output Voltage (%)
80 Typical Output Voltage at Shutdown 60
40 Vin min 20 Vin nom Vin max 0
5.00
0
10
20
30
40
50
60
70
80
90 100 110 120 130 140 150
Load Current (% )
Common Figure 1: Typical startup waveform. Input voltage pre-applied, ON/OFF Pin on Ch 2.
Common Figure 2: Output voltage vs. load current showing typical current limit curves and converter shutdown points.
1,000,000
100,000
Trim Resistance (kOhms)
10,000
Trim Resistance (kOhms)
0 1 2 3 4 5 6 7 8 9 10
100,000
1,000
10,000
100
1,000
10
100 0 1 2 3 4 5 6 7 8 9 10
1.8 V
3.3 V
5V
12 V
15 V
24 V
28 V
40V
48 V
Common Figure 3: Trim graph for trim-up 1.8 to 12 V outputs.
10,000.0 % Decrease in Vout (All voltages)
Common Figure 4: Trim graph for trim-up 15 to 48 V outputs.
Trim Resistance (kOhms)
1,000.0
100.0
10.0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
% Decrease in Vout (All voltages)
Common Figure 5: Trim graph for trim down.
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Technical Specification
P
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Input: Output: Current: Part no.:
9 - 75 V 48 V 3.7 A IQ32480HPC3H
IQ32480HPC3e eLeCTRICAL CHARACTeRISTICS (48.0 Vout)
Ta=25C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40Cto+100Cbaseplate temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter
InPUT CHARACTeRISTICS MaximumInputCurrent No-LoadInputCurrent DisabledInputCurrent ResponsetoInputTransient InputTerminalRippleCurrent RecommendedInputFuse OUTPUT CHARACTeRISTICS OutputVoltageSetPoint OutputVoltageRegulation OverLine OverLoad OverTemperature TotalOutputVoltageRange OutputVoltageRippleandNoise Peak-to-Peak RMS OperatingOutputCurrentRange OutputDCCurrent-LimitInception OutputDCCurrent-LimitShutdownVoltage Back-DriveCurrentLimitwhileEnabled Back-DriveCurrentLimitwhileDisabled MaximumOutputCapacitance OutputVoltageduringLoadCurrentTransient StepChangeinOutputCurrent(0.1A/s) SettlingTime OutputVoltageTrimRange OutputVoltageRemoteSenseRange OutputOver-VoltageProtection eFFICIenCY 100%Load 50%Load
Min.
Typ.
180 1 3.9 900
Max.
23 230 2
Units notes & Conditions
A mA mA V mA A V % % mV V mV mV A A V A mA F mV s % % V % % 10Vin;nominaloutput;incurrentlimit
25 47.52 48 0.1 0.1 -720 46.80 0 0 3.74 80 17 4.08 31 0.1 5 48.48 0.3 0.3 720 49.20 160 30 3.4 4.42
1000V/ms,32Vto100Vstep;seeFigure6 RMS Fastactingexternalfuserecommended
Oversample,line,load,temperature&life 20MHzbandwidth;seeNote1 Fullload Fullload Subjecttothermalderating Outputvoltage10%Low Negativecurrentdrawnfromoutput Negativecurrentdrawnfromoutput Voutnominalatfullload(resistiveload) 50%to75%to50%Ioutmax Towithin1%Voutnom AcrossPins8&4;CommonFigures3-5;seeNote2 AcrossPins8&4 Overfulltemprange SeeFigure1forefficiencycurve SeeFigure1forefficiencycurve
100 2200 80 -20 56.2 58.6 87 88 10 10 61.0
Note1:Outputisterminatedwith1Fceramiccapacitor.Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQor applicationssupport(e-mail:support@synqor.com) Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
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Page 6
Technical Specification
100 95
P
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Input: Output: Current: Part no.:
9 - 75 V 48 V 3.7 A IQ32480HPC3H
35 30
Power Dissipation (W)
9 Vin 32 Vin 75 Vin
90
25 20 15 10 5 0 9 Vin 32 Vin 75 Vin
Efficiency (%)
85 80 75 70 65 60 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
Load Current (A)
Load Current (A)
Figure 1: Efficiency at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C.
Figure 2: Power dissipation at nominal output voltage vs. load current for minimum, nominal, and maximum input voltage at 25C.
4.0 3.5 3.0 2.5
4.0 3.5 3.0 2.5
Iout (A)
2.0 1.5 1.0 0.5 0.0 25 40 55 70 85 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s)
Iout (A)
2.0 1.5 1.0 0.5 0.0 25 40 55 70 85 400 LFM (2.0 m/s) 300 LFM (1.5 m/s) 200 LFM (1.0 m/s) 100 LFM (0.5 m/s)
Ambient Air Temperature (C)
Ambient Air Temperature (C)
Figure 3: Encased converter (without heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2" heatsink) max. output power derating vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows across the converter from input to output (nominal input voltage).
Figure 5: Output voltage response to step-change in load current (50%-75%50% of Iout(max); dI/dt = 0.1 A/s). Load cap: 1 F ceramic capacitor. Ch 1: Vout
(2 V/div), Ch 2: Iout (1 A/div).
Product # IQ32xxxHPCxx Phone 1-888-567-9596 www.synqor.com
Figure 6: Output voltage response to step-change in input voltage (500 V/ms). Load cap: 100 F, electrolytic output capacitance. Ch 1: Vout (2 V/div), Ch 2: Vin (10 V/div).
Doc.# 005-005H332 Rev. 1 08/13/08 Page 7
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BASICOPERATIONANDFEATURES
This converter series uses a two-stage power conversion topology. The first stage is a buck-converter that keeps the output voltage constant over variations in line, load, and temperature. The second stage uses a transformer to provide the functions of input/output isolation and voltage step-up or step-down to achieve the output voltage required. Both the first stage and the second stage switch at a fixed frequency for predictable EMI performance. Rectification of the transformer's output is accomplished with synchronous rectifiers. These devices, which are MOSFETs with a very low on-state resistance, dissipate far less energy than Schottky diodes. This is the primary reason that the converter has such high efficiency, even at very low output voltages and very high output currents. These converters are offered totally encased to withstand harsh environmentsandthermallydemandingapplications.Dissipation throughout the converter is so low that it does not require a heatsink for operation in many applications; however, adding a heatsink provides improved thermal derating performance in extreme situations. This series of converters use the industry standard footprint and pin-out configuration.
M
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Technical Specification
IQ32-HPC Family
CONTROLFEATURES
ReMOTe On/OFF (Pin 2):TheON/OFFinput,Pin2,permits the user to control when the converter is on or off. This input is referenced to the return terminal of the input bus, Vin(-). TheON/OFFsignalisactivelow(meaningthatalowturnsthe converteron).FigureAdetailsfourpossiblecircuitsfordriving theON/OFFpin.FigureBisadetailedlookoftheinternalON/ OFFcircuitry. ReMOTe SenSe(+) (Pins 7 and 5): The SENSE(+) inputs correct for voltage drops along the conductors that connect the converter'soutputpinstotheload. Pin 7 should be connected to Vout(+) and Pin 5 should be connectedtoVout(-)atthepointontheboardwhereregulation is desired. A remote connection at the load can adjust for a voltage drop only as large as that specified in this datasheet, that is
[Vout(+)-Vout(-)]-[Vsense(+)-Vsense(-)] <
SenseRange%xVout
Pins 7 and 5 must be connected for proper regulation of the output voltage. If these connections are not made, the converter will deliver an output voltage that is slightly higher than its specified value. Note: the output over-voltage protection circuit senses the voltage across the output (pins 8 and 4) to determine when it should trigger, not the voltage across the converter's sense leads(pins7and5).Therefore,theresistivedropontheboard should be small enough so that output OVP does not trigger, even during load transients.
ON/OFF
ON/OFF
Vin(_) RemoteEnableCircuit
Vin(_) NegativeLogic (PermanentlyEnabled) ON/OFF
TTL/ CMOS
5V 50k ON/OFF ON/OFF 50k
TTL
5V
100pF
Vin(_) OpenCollectorEnableCircuit
Vin(_) DirectLogicDrive
Vin(_)
Figure A: Various circuits for driving the ON/OFF pin.
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Figure B: Internal ON/OFF pin circuitry
Doc.# 005-005H332 Rev. 1 08/13/08 Page 8
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OUTPUT VOLTAGe TRIM (Pin 6):TheTRIMinputpermitsthe usertoadjusttheoutputvoltageacrossthesenseleadsupor down according to the trim range specifications. To decrease the output voltage, the user should connect a resistorbetweenPin6andPin5(SENSE(-)input).Foradesired decrease of the nominal output voltage, the value of the resistor should be
M
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Technical Specification
IQ32-HPC Family
PROTECTIONFEATURES
Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping avoid an input system instability problem, described in more detail in the application note titled "Input System Instability" on our website. The lockout circuitry is a comparator with dc hysteresis. Whentheinputvoltageisrising,itmustexceedthetypicalTurnOn Voltage Threshold value (listed on the specifications page) before the converter will turn on. Once the converter is on, the input voltage must fall below the typical Turn-Off Voltage Threshold value before the converter will turn off. Output Current Limit: The maximum current limit remains constant as the output voltage drops. However, once the impedance of the load across the output is small enough to make theoutputvoltagedropbelowthespecifiedOutputDCCurrentLimitShutdownVoltage,theconverterturnsoff. Theconverterthenentersa"hiccupmode"whereitrepeatedly turnsonandoffata5Hz(nominal)frequencywitha5%duty cycle until the short circuit condition is removed. This prevents excessive heating of the converter or the load board. Output Over-Voltage Limit:Ifthevoltageacrosstheoutput pinsexceedstheOutputOver-VoltageProtectionthreshold,the converter will immediately stop switching. This prevents damage totheloadcircuitdueto1)excessiveseriesresistanceinoutput current path from converter output pins to sense point, 2) a releaseofashort-circuitcondition,or3)areleaseofacurrent limit condition. Load capacitance determines exactly how high theoutputvoltagewillriseinresponsetotheseconditions.After 200mstheconverterwillautomaticallyrestart. Over-Temperature Shutdown: A temperature sensor on the converter senses the average temperature of the module. The thermal shutdown circuit is designed to turn the converter off when the temperature at the sensed location reaches the Over-Temperature Shutdown value. It will allow the converter to turn on again when the temperature of the sensed location fallsbytheamountoftheOver-TemperatureShutdownRestart Hysteresis value.
Rtrim-down =
where
(511)-10.22 %
(kW)
% =
Vnominal-Vdesired Vnominal
x100%
To increase the output voltage, the user should connect a resistorbetweenPin6andPin7(SENSE(+)input).Foradesired increase of the nominal output voltage, the value of the resistor should be
Rtrim-up =
where
(
5.11VOUTx (100+%)
1.225%
_ 511 _ 10.22
%
)
(kW)
Vout=NominalOutputVoltage
Graphs on Page 3 show the relationship between the trim resistorvalueandRtrim-upandRtrim-down,showingthetotal range the output voltage can be trimmed up or down. Note:theTRIMfeaturedoesnotaffectthevoltageatwhichthe output over-voltage protection circuit is triggered. Trimming the output voltage too high may cause the over-voltage protection circuit to engage, particularly during transients. It is not necessary for the user to add capacitance at the Trim pin. The node is internally bypassed to eliminate noise. Total DC Variation of VOUT: For the converter to meet its full specifications, the maximum variation of the dc value of VOUT, due to both trimming and remote load voltage drops, should not be greater than that specified for the output voltage trim range.
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APPLICATIONCONSIDERATIONS
Input System Instability: This condition can occur because any dc-dc converter appears incrementally as a negative resistance load. A detailed application note titled "Input SystemInstability"isavailableontheSynQorwebsite which provides an understanding of why this instability arises, and shows the preferred solution for correcting it. Application Circuits: Figure D provides a typical circuit diagram which details the input filtering and voltage trimming. Input Filtering and external Capacitance: FigureE provides a diagram showing the internal input filter components. This filter dramatically reduces input terminal ripple current, which otherwise could exceed the rating of an external electrolytic input capacitor. The recommended external input capacitance is specified in the Input Characteristics section on the Electrical Characteristics page. More detailed information is available in the application note titled "EMICharacteristics"ontheSynQorwebsite.
M
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Technical Specification
IQ32-HPC Family
Startup Inhibit Period:TheStartupInhibitPeriodensuresthat theconverterwillremainoffforapproximately200mswhenitis shutdownforanyreason.Whenanoutputshortispresent,this generates a 5 Hz "hiccup mode," which prevents the converter from overheating. In all, there are seven ways that the converter canbeshutdown,initiatingaStartupInhibitPeriod: * InputUnder-VoltageLockout * InputOver-VoltageShutdown * OutputOver-VoltageProtection * OverTemperatureShutdown * CurrentLimit * ShortCircuitProtection * TurnedoffbytheON/OFFinput FigureFshowsthreeturn-onscenarios,whereaStartupInhibit Period is initiated at t0, t1, and t2:
Vin(+) External Input Filter
Electrolytic Capacitor
Vout(+) Vsense(+) Rtrim-up
or
Vin
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 the specifications page).
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Beforetimet0,whentheinputvoltageisbelowtheUVLthreshold, theunitisdisabledbytheInputUnder-VoltageLockoutfeature. When the input voltage rises above the UVLthreshold, the Input Under-Voltage Lockout is released, and a Startup Inhibit Periodisinitiated.Attheendofthisdelay,theON/OFFpinis evaluated, and since it is active, the unit turns on. 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. Thermal Considerations: The maximum operating baseplate temperature, TB,is100C.Aslongastheuser'sthermal system keeps TB < 100 C, the converter can deliver its full rated power. Apowerderatingcurvecanbecalculatedforanyheatsinkthatis attached to the base-plate of the converter. It is only necessary todeterminethethermalresistance,RTHBA, of the chosen heatsink between the base-plate and the ambient air for a given airflow rate. This information is usually available from the heatsink vendor. The following formula can the be used to determine the
M
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Technical Specification
IQ32-HPC Family
maximum power the converter can dissipate for a given thermal conditionifitsbase-plateistobenohigherthan100C. 100 C-TA max Pdiss = RTHBA Thisvalueofpowerdissipationcanthenbeusedinconjunction withthedatashowninFigure2todeterminethemaximumload current(andpower)thattheconvertercandeliverinthegiven thermal condition. Forconvenience,Figures3and4providePowerderatingcurves for an encased converter without a heatsink and with a typical 1/4"highheatsink.
Vin
Under-Voltage LockoutTurnOnThreshold
ON/OFF
(neglogic)
ON
OFF ON
OFF
ON 9ms (typical turnontime)
Vout
(typical start-up inhibitperiod)
200ms
200ms
200ms
t0
t1
t2
t
Figure F: Startup Inhibit Period (turn-on time not to scale)
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PART nUMBeRInG SYSTeM
The part numbering system for SynQor's InQor dc-dc converters follows the format shown in the example below.
IQ 3 2 018 H P C 5 5 n R S - G 6/6RoHS
(see OrderingInformation)
M
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Technical Specification
IQ32-HPC Family
ORDeRInG InFORMATIOn
The tables below show the valid model numbers and ordering optionsforconvertersinthisproductfamily.Whenordering SynQorconverters,pleaseensurethatyouusethecomplete 15characterpartnumberconsistingofthe12characterbase part number and the additional 3 characters for options. A"-G"suffixindicatestheproductis6/6RoHScompliant.
Model Number IQ32018HPC55xyz IQ32033HPC45xyz IQ32050HPC32xyz IQ32120HPC13xyz IQ32150HPC11xyz IQ32240HPC6Hxyz IQ32280HPC5Ixyz IQ32400HPC04xyz IQ32480HPC3Exyz Continuous Input Voltage 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V 9 - 75 V Transient Input Voltage 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms 100 V - 100 ms Output Voltage 1.8 V 3.3 V 5.0 V 12 V 15 V 24 V 28 V 40 V 48 V Maximum Output Current 55 A 45 A 32 A 13 A 11 A 6.7 A 5.8 A 4.0 A 3.4 A
Options
OutputCurrent ThermalDesign(seeOrderingInfo) PerformanceLevel PackageSize OutputVoltage Input Voltage ProductFamily
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 N - Negative Pin Length R - 0.180" Feature Set S - Standard
Thefirst12characterscomprisethebasepartnumberand the last 3 characters indicate available options. The "-G" suffixindicates6/6RoHScompliance.
Application notes
Avarietyofapplicationnotesandtechnicalwhitepaperscan be downloaded in pdf format from our website.
RoHS Compliance:TheEUledRoHS(RestrictionofHazardous 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 RoHSaddendumavailableatourRoHSCompliance/LeadFree Initiative web page or e-mail us at rohs@synqor.com.
PATenTS
SynQorholdsthefollowingpatents,oneormoreofwhich mightapplytothisproduct: 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: TollFree: Fax: E-mail: Web: Address:
978-849-0600 888-567-9596 978-849-0602 p ower@synqor.com www.synqor.com 155SwansonRoad Boxborough,MA01719 USA
Phone 1-888-567-9596
Warranty SynQoroffersathree(3)yearlimitedwarranty.Completewarranty 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,noresponsibilityisassumedbySynQorforitsuse, nor for any infringements of patents or other rights of third parties whichmayresultfromitsuse.Nolicenseisgrantedbyimplicationor otherwiseunderanypatentorpatentrightsofSynQor.
Product # IQ32xxxHPCxx
www.synqor.com
Doc.# 005-005H332 Rev. 1
08/13/08
Page 12

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