Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 1
The
InQor® 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,upto87%atfullratedloadcurrent
• Deliversfullpowerwithminimalderating-noheatsinkrequired
• Operatinginputvoltagerange:
9-75V,100Vtransientfor100ms
• FixedfrequencyswitchingprovidespredictableEMI
• Nominimumloadrequirement
Protection Features
• Inputunder-voltagelockout
• Inputover-voltageshutdown
• Outputcurrentlimitandshortcircuitprotection
• Activebackbiaslimit
• Outputover-voltageprotection
• Thermalshutdown
Mechanical Features
• IndustrystandardHalf-brickpin-outconfiguration
• Standardsize:2.390"x2.490"x0.512"
(60.6x63.1x13.0mm)
• Totalweight:5oz(142g)
Control Features
• On/Offcontrolreferencedtoinputside
• Remotesensefortheoutputvoltage
• Outputvoltagetrimrangeof-20%,+10%
9-75 V 100 V 1.8-48 V 165 W 2250 V dc Half-brick
Continuous Input Transient Input Outputs Max Power Isolation DC-DC Converter
CONTENTS
Safety Features
• 2250V,30MW input-to-output isolation
• UL60950-1:2003,basicinsulation
• CAN/CSA-C22.2No.60950-1:2003
• EN60950-1:2001
• RoHScompliant(seePage
28
)
PageNo.
IQ32-HPXMechanicalDrawing ..............................2
IQ32HPXFamilyElectricalCharacteristics(alloutputvoltages).......3
IQ32HPXFamilyStandards&Qualification .....................4
IQ32FamilyFigures(alloutputvoltages) ......................5
IQ32018HPX55ElectricalCharacteristics(1.8Vout)&Figures.......6-7
IQ32033HPX45ElectricalCharacteristics(3.3Vout)&Figures.......8-9
IQ32050HPX32ElectricalCharacteristics(5.0Vout)&Figures.....10-11
IQ32120HPX13ElectricalCharacteristics(12.0Vout)&Figures ....12-13
IQ32150HPX11ElectricalCharacteristics(15.0Vout)&Figures ....14-15
IQ32240HPX6HElectricalCharacteristics(24.0Vout)&Figures....16-17
IQ32280HPX5IElectricalCharacteristics(28.0Vout)&Figures ....18-19
IQ32400HPX04ElectricalCharacteristics(40.0Vout)&Figures ....20-21
IQ32480HPX3EElectricalCharacteristics(48.0Vout)&Figures ....22-23
ApplicationSection ...................................24-27
OrderingInformation.................................... 28
IQ32050HPC32NRS-G
9-75V
IN
5V
OUT @ 32A
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 2
NOTES
1) Appliedtorqueperscrewshouldnotexceed6in-lb.(0.7Nm).
2) Baseplateflatnesstoleranceis0.004"(.10mm)TIRforsurface.
3) Pins1-3,5-7are0.040”(1.02mm)diameter,with0.080”
(2.03mm)diameterstandoffshoulders.
4) Pins4and8are0.080”(2.03mm)dia.with0.125”(3.18mm)dia.
standoff shoulders
5) AllPins:Material:CopperAlloy
Finish:MatteTinoverNickelplate
6) UndimensionedComponentsareshownforvisualreferenceonly
7) Weight:4.9oz(142g)
8) ThreadedorNon-Threadedoptionsavailable
9) Alldimensionsininches(mm)Tolerances:
x.xx+/-0.02in.(x.x+/-0.5mm)
x.xxx+/-0.010in.(x.xx+/-0.25mm)
PIN DESIGNATIONS
Pin Name Function
1 Vin(+) Positiveinputvoltage
2 ON/OFF
TTLinputtoturnconverteron
andoff,referencedtoVin(–),with
internal pull up.
3 Vin(–) Negativeinputvoltage
4 Vout(–) Negativeoutputvoltage
5 SENSE(–) Negativeremotesense1
6TRIM Outputvoltagetrim2
7 SENSE(+) Positiveremotesense3
8 Vout(+) Positiveoutputvoltage
Notes:
1) SENSE(–)shouldbeconnectedtoVout(–)either
remotely or at the converter.
2) LeaveTRIMpinopenfornominaloutputvoltage.
3) SENSE(+)shouldbeconnectedtoVout(+)
either remotely or at the converter.
1.90
[ 48,3 ]
.400 [ 10,16 ]
1.400 [ 35,56 ]
.400 [ 10,16 ]
.700 [ 17,78 ]
1.000 [ 25,4 ]
1.400 [ 35,56 ]
2.386 ±.020
[ 60,6 ±0,5 ]
.233 ±.020
[ 5,92 ±0,5 ]
.543 ±.020 [ 13,79 ±0,5]
1.90
[ 48,3 ]
2.486 ±.020 [ 63,14 ±0,5 ]
.243 ±.020
[ 6,17 ±0,5 ]
.243 ±.020
[ 6,17 ±0,5]
2.00 [ 50,8 ]
+.002
.512 -.005
+0,05
13
[-0,12 ]
OVERALL
HEIGHT
+.007
.027 -.010
+0,17
0,69
[-0,25 ]
BOTTOMSIDE CLEARANCE
.163
[ 4,14 ]
123
4
5
6
7
8
SIDE VIEW
TOP VIEW
THRU HOLE
M3 (SEE NOTE 8)
STANDOFFS (4)
IQ32-HP Mechanical Drawing
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 3
IQ32 HPX Family Electrical Characteristics (all output voltages)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
ABSOLUTE MAXIMUM RATINGS
InputVoltage
Non-Operating 100 V Continuous
Operating 75 V Continuous
OperatingTransientProtection 100 V 100ms
IsolationVoltage
InputtoOutput 2250 Vdc
InputtoBase-Plate 2250 Vdc
OutputtoBase-Plate 2250 Vdc
OperatingTemperature -40 100 °C Baseplate temperature
StorageTemperature -55 125 °C
VoltageatON/OFFinputpin -2 18 V
INPUT CHARACTERISTICS
OperatingInputVoltageRange 932 75 V 100V,100msTransient;SeeNote1
InputUnder-VoltageLockout
Turn-OnVoltageThreshold 11.0 11.2 11.5 V
Turn-OffVoltageThreshold 8.1 8.4 8.7 V
LockoutVoltageHysteresis 2.8 V
InputOver-VoltageShutdown -V NotAvailable
RecommendedExternalInputCapacitance 470 µF TypicalESR0.1-0.2Ω
InputFilterComponentValues(L\C) 0.34\13.2 µH\µF Internalvalues;seeFigureE
DYNAMIC CHARACTERISTICS
Turn-OnTransient
Turn-OnTime 10 ms Fullload,Vout=90%nom.
Start-UpInhibitTime 200 230 250 ms -40°Cto+125°C;FigureF
OutputVoltageOvershoot 0 % MaximumOutputCapacitance
ISOLATION CHARACTERISTICS
IsolationVoltage(dielectricstrength) SeeAbsoluteMaximumRatings
IsolationResistance 30 MΩ
IsolationCapacitance(inputtooutput) 1000 pF SeeNote2
TEMPERATURE LIMITS FOR POWER DERATING CURVES
SemiconductorJunctionTemperature 125 °C Packageratedto150°C
Board Temperature 125 °C ULratedmaxoperatingtemp130°C
Transformer Temperature 125 °C
MaximumBaseplateTemperature,Tb 100 °C
FEATURE CHARACTERISTICS
SwitchingFrequency 255 275 295 kHz Isolation stage switching freq. is half this
ON/OFFControl
Off-StateVoltage 2.4 18 V
On-StateVoltage -2 0.8
ON/OFFControl ApplicationnotesFiguresA&B
Pull-UpVoltage 5 V
Pull-UpResistance 50 kΩ
Over-TemperatureShutdownOTPTripPoint 125 °C AveragePCBTemperature
Over-TemperatureShutdownRestartHysteresis 10 °C
RELIABILITY CHARACTERISTICS
CalculatedMTBF(Telcordia)TR-NWT-000332 2.2 106 Hrs. 80%load,200LFM,40°CTa
CalculatedMTBF(MIL-217)MIL-HDBK-217F 1.3 106 Hrs. 80%load,200LFM,40°CTa
FieldDemonstratedMTBF 106 Hrs. Seeourwebsitefordetails
Note1:Start-upguaranteedabove11.5V,butwilloperatedownto9V
Note2:Highervaluesofisolationcapacitancecanbeaddedexternaltothemodule.
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 4
STANDARDSCOMPLIANCE
Parameter Notes&Conditions
STANDARDSCOMPLIANCE
UL/cUL60950-1 File#E194341,Basicinsulation
EN60950-1 CertiedbyTUV
NeedleFlameTest(IEC695-2-2) Testonentireassembly;board&plasticcomponentsUL94V-0compliant
IEC61000-4-2 ESDtest,8kV-NP,15kVair-NP(NormalPerformance)
Note:Anexternalinputfusemustalwaysbeusedtomeetthesesafetyrequirements.ContactSynQorforofcialsafetycerticatesonnew
releasesordownloadfromtheSynQorwebsite.
QUALIFICATIONTESTING
Parameter #Units TestConditions
QUALIFICATIONTESTING
LifeTest 32 95%ratedVinandload,unitsatderatingpoint,1000hours
Vibration 5 10-55Hzsweep,0.060"totalexcursion,1min./sweep,120sweepsfor3axis
MechanicalShock 5 100gminimum,2dropsinxandyaxis,1dropinzaxis
TemperatureCycling 10 -40°Cto100°C,unittemp.ramp15°C/min.,500cycles
Power/ThermalCycling 5 Toperating=mintomax,Vin=mintomax,fullload,100cycles
DesignMarginality 5 Tmin-10°CtoTmax+10°C,5°Csteps,Vin=mintomax,0-105%load
Humidity 5 85°C,85%RH,1000hours,continuousVinappliedexcept5min/day
Solderability 15pins MIL-STD-883,method2003
IQ32 HPX FAMILY STANDARDS & QUALIFICATION
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 5
Common Figure 3: Trim graph for trim-up 1.8 to 12 V outputs.
0
20
40
60
80
100
120
010 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Load Current (%)
Output Voltage (%)
Vin min
Vin nom
Vin max
Typical Current Limit Inception Point
Typical Output Voltage at Shutdown
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.
100.0
1,000.0
10,000.0
100,000.0
012345678910 11 12 13 14 15
Increase in Vout (%)
Trim Resistance (kOhms)
15 V 24 V 28 V 40 V 48 V
10.0
100.0
1,000.0
10,000.0
100,000.0
012345678910 11 12 13 14 15
Increase in Vout (%)
Trim Resistance (kOhms)
1.8 V 3.3 V 5 V 12 V
10.0
100.0
1,000.0
10,000.0
012345678910 11 12 13 14 15 16 17 18 19 20
Decrease in Vout (%)
Trim Resistance (kOhms)
All voltages
Common Figure 5
: Trim graph for trim down.
Common Figure 4: Trim graph for trim-up 15 to 48 V outputs.
Nominal Vout
IQ32 Family Figures (all output voltages)
5.00
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 6
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
1.8 V
55 A
IQ32018HPx55
IQ32018HPX55 Electrical Characteristics (1.8 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 18.2 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 300 380 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 0.06 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 240 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 1.782 1.8 1.818 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -27 27 mV
TotalOutputVoltageRange 1.755 1.845 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 90 180 mV Fullload
RMS 19 40 mV Fullload
OperatingOutputCurrentRange 0 55 ASubjecttothermalderating
OutputDCCurrent-LimitInception 60.5 66.0 71.5 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 0.8 V
Back-DriveCurrentLimitwhileEnabled 0.4 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 0.1 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 15,000 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 110 mV 50%to75%to50%Ioutmax
SettlingTime 400 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5;seeNote2
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 2.1 2.2 2.3 V Overfulltemprange
EFFICIENCY
100%Load 80 % SeeFigure1forefficiencycurve
50%Load 83 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleand
noise,consultSynQorapplicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 7
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
1.8 V
55 A
IQ32018HPx55
0
3
6
9
12
15
18
21
24
27
0 5 10 15 20 25 30 35 40 45 50 55
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
10
20
30
40
50
60
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
10
20
30
40
50
60
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0 5 10 15 20 25 30 35 40 45 50 55
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 8
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
3.3 V
45 A
IQ32033HPx45
IQ32033HPX45 Electrical Characteristics (3.3 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 26.4 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 340 430 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 0.12 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 440 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 3.267 3.3 3.333 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -50 50 mV
TotalOutputVoltageRange 3.218 3.383 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 175 350 mV Fullload
RMS 27 50 mV Fullload
OperatingOutputCurrentRange 0 45 ASubjecttothermalderating
OutputDCCurrent-LimitInception 49.5 54.0 58.5 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 1.8 V
Back-DriveCurrentLimitwhileEnabled 1.45 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 0.1 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 10,000 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 100 mV 50%to75%to50%Ioutmax
SettlingTime 200 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 3.9 4.0 4.2 V Overfulltemprange
EFFICIENCY
100%Load 83 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleand
noise,consultSynQorapplicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 9
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
3.3 V
45 A
IQ32033HPx45
0
3
6
9
12
15
18
21
24
27
30
33
36
0 5 10 15 20 25 30 35 40 45
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
5
10
15
20
25
30
35
40
45
50
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
5
10
15
20
25
30
35
40
45
50
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0 5 10 15 20 25 30 35 40 45
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 10
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
5 V
32 A
IQ32050HPx32
IQ32050HPX32 Electrical Characteristics (5.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 27.9 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 325 410 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 0.15 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 350 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 4.95 5 5.05 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -75 75 mV
TotalOutputVoltageRange 4.875 5.125 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 140 280 mV Fullload
RMS 18 40 mV Fullload
OperatingOutputCurrentRange 0 32 ASubjecttothermalderating
OutputDCCurrent-LimitInception 35.2 38.4 41.6 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 2.4 V
Back-DriveCurrentLimitwhileEnabled 0.75 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 0.4 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 8,000 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 165 mV 50%to75%to50%Ioutmax
SettlingTime 200 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5;seeNote2
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 5.9 6.1 6.4 V Overfulltemprange
EFFICIENCY
100%Load 84 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleand
noise,consultSynQorapplicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 11
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
5 V
32 A
IQ32050HPx32
0
5
10
15
20
25
30
35
0 5 10 15 20 25 30
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
5
10
15
20
25
30
35
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
5
10
15
20
25
30
35
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0 5 10 15 20 25 30
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 12
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
12 V
13 A
IQ32120HPx13
IQ32120HPX13 Electrical Characteristics (12.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 26.6 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 450 560 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 0.32 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 330 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 11.88 12 12.12 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -180 180 mV
TotalOutputVoltageRange 11.700 12.300 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 110 220 mV Fullload
RMS 17 30 mV Fullload
OperatingOutputCurrentRange 0 13 ASubjecttothermalderating
OutputDCCurrent-LimitInception 14.3 15.6 16.9 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 6V
Back-DriveCurrentLimitwhileEnabled 0.45 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 1 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 1,500 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 350 mV 50%to75%to50%Ioutmax
SettlingTime 80 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5;seeNote2
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 14.040 14.640 15.240 V Overfulltemprange
EFFICIENCY
100%Load 86 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleand
noise,consultSynQorapplicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 13
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
12 V
13 A
IQ32120HPx13
0
3
6
9
12
15
18
21
24
27
30
012345678910 11 12 13
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
2
4
6
8
10
12
14
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
2
4
6
8
10
12
14
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
012345678910 11 12 13
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 14
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
15 V
11 A
IQ32150HPx11
IQ32150HPX11 Electrical Characteristics (15.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 28.5 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 400 500 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 0.43 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 375 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 14.85 15 15.15 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -225 225 mV
TotalOutputVoltageRange 14.625 15.375 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 75 150 mV Fullload
RMS 11 20 mV Fullload
OperatingOutputCurrentRange 0 11 ASubjecttothermalderating
OutputDCCurrent-LimitInception 12.1 13.2 14.3 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 8 V
Back-DriveCurrentLimitwhileEnabled 0.5 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 1.5 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 1,000 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 660 mV 50%to75%to50%Ioutmax
SettlingTime 80 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5;seeNote2
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 17.6 18.3 19.1 V Overfulltemprange
EFFICIENCY
100%Load 85 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramicand15µFlow-ESRtantalumcapacitors.Forapplicationsrequiringreducedoutputvoltagerippleand
noise,consultSynQorapplicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 15
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
15 V
11 A
IQ32150HPx11
0
3
6
9
12
15
18
21
24
27
30
33
012345678910 11
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
2
4
6
8
10
12
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
2
4
6
8
10
12
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
012345678910 11
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 16
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
24 V
6.7 A
IQ32240HPx6H
IQ32240HPX6H Electrical Characteristics (24.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 28.1 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 330 410 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 1.2 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 360 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 23.76 24 24.24 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -360 360 mV
TotalOutputVoltageRange 23.400 24.600 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 150 300 mV Fullload
RMS 21 40 mV Fullload
OperatingOutputCurrentRange 0 6.7 ASubjecttothermalderating
OutputDCCurrent-LimitInception 7.4 8.0 8.7 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 13 V
Back-DriveCurrentLimitwhileEnabled 0.25 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 2.5 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 400 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 1400 mV 50%to75%to50%Ioutmax
SettlingTime 80 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 28.1 29.3 30.5 V Overfulltemprange
EFFICIENCY
100%Load 84 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramiccapacitor.Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQor
applicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 17
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
24 V
6.7 A
IQ32240HPx6H
0
5
10
15
20
25
30
35
40
01234567
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
1
2
3
4
5
6
7
8
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
1
2
3
4
5
6
7
8
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0 1 2 3 4 5 6 7
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 18
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
28 V
5.8 A
IQ32280HPx5I
IQ32280HPX5I Electrical Characteristics (28.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 28.4 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 350 440 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 1.5 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 390 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 27.72 28 28.28 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -420 420 mV
TotalOutputVoltageRange 27.300 28.700 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 160 320 mV Fullload
RMS 21 40 mV Fullload
OperatingOutputCurrentRange 0 5.8 ASubjecttothermalderating
OutputDCCurrent-LimitInception 6.4 7.0 7.5 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 15 V
Back-DriveCurrentLimitwhileEnabled 0.25 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 3 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 250 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 1600 mV 50%to75%to50%Ioutmax
SettlingTime 80 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 32.8 34.2 35.6 V Overfulltemprange
EFFICIENCY
100%Load 84 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramiccapacitor.Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQor
applicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 19
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
28 V
5.8 A
IQ32280HPx5I
0
5
10
15
20
25
30
35
0123456
Load Current (A)
Power Dissipation (W)
12Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
1
2
3
4
5
6
7
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
1
2
3
4
5
6
7
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0123456
Load Current (A)
Efficiency (%)
12Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 20
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
40 V
4 A
IQ32400HPx04
IQ32400HPX04 Electrical Characteristics (40.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 27.9 A Vinmin;trimup;incurrentlimit
No-LoadInputCurrent 400 500 mA
DisabledInputCurrent 3 6mA
ResponsetoInputTransient 2.4 V 500V/ms;seeFigure6
InputTerminalRippleCurrent 350 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 39.6 40 40.4 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -600 600 mV
TotalOutputVoltageRange 39.000 41.000 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 180 360 mV Fullload
RMS 22 40 mV Fullload
OperatingOutputCurrentRange 0 4 ASubjecttothermalderating
OutputDCCurrent-LimitInception 4.4 4.8 5.2 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 22 V
Back-DriveCurrentLimitwhileEnabled 0.25 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 4 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 150 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 2500 mV 50%to75%to50%Ioutmax
SettlingTime 80 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 46.8 48.8 50.8 V Overfulltemprange
EFFICIENCY
100%Load 84 % SeeFigure1forefficiencycurve
50%Load 87 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramiccapacitor.Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQor
applicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 21
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
40 V
4 A
IQ32400HPx04
0
5
10
15
20
25
30
35
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Load Current (A)
Power Dissipation (W)
9 Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0
1
1
2
2
3
3
4
4
5
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0
1
1
2
2
3
3
4
4
5
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Load Current (A)
Efficiency (%)
9 Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 22
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
48 V
3.4 A
IQ32480HPx3H
IQ32480HPX3E Electrical Characteristics (48.0 Vout)
Ta=25°C,airflowrate=300LFM,Vin=32Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°Cbaseplate
temperaturewithappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter Min. Typ. Max. Units Notes & Conditions
INPUT CHARACTERISTICS
MaximumInputCurrent 23 A 10Vin;nominaloutput;incurrentlimit
No-LoadInputCurrent 180 230 mA
DisabledInputCurrent 1 2 mA
ResponsetoInputTransient 3.9 V 1000V/ms,32Vto100Vstep;seeFigure6
InputTerminalRippleCurrent 900 mA RMS
RecommendedInputFuse 25 A Fastactingexternalfuserecommended
OUTPUT CHARACTERISTICS
OutputVoltageSetPoint 47.52 48 48.48 V
OutputVoltageRegulation
OverLine ±0.1 ±0.3 %
OverLoad ±0.1 ±0.3 %
OverTemperature -720 720 mV
TotalOutputVoltageRange 46.80 49.20 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise 20MHzbandwidth;seeNote1
Peak-to-Peak 0 80 160 mV Fullload
RMS 17 30 mV Fullload
OperatingOutputCurrentRange 0 3.4 ASubjecttothermalderating
OutputDCCurrent-LimitInception 3.74 4.08 4.42 A Outputvoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 31 V
Back-DriveCurrentLimitwhileEnabled 0.1 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 5 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 100 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
StepChangeinOutputCurrent(0.1A/µs) 2200 mV 50%to75%to50%Ioutmax
SettlingTime 80 µs Towithin1%Voutnom
OutputVoltageTrimRange -20 10 % AcrossPins8&4;CommonFigures3-5;seeNote2
OutputVoltageRemoteSenseRange 10 % AcrossPins8&4
OutputOver-VoltageProtection 56.16 58.6 60.96 V Overfulltemprange
EFFICIENCY
100%Load 87 % SeeFigure1forefficiencycurve
50%Load 88 % SeeFigure1forefficiencycurve
Note1:Outputisterminatedwith1µFceramiccapacitor.Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQor
applicationssupport(e-mail:support@synqor.com)
Note2:Trim-uprangeislimitedbelow10%atlowlineandfullload.
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 23
Technical Specification
Input:
Output:
Current:
Part No.:
9-75V
48 V
3.4 A
IQ32480HPx3H
9-75V
48 V
3.4 A
IQ32480HPx3H
0
5
10
15
20
25
30
35
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Load Current (A)
Power Dissipation (W)
9 Vin
32 V in
75 V in
Figure 1: Efficiency at nominal output voltage vs. load current for
minimum, nominal, and maximum input voltage at 25
°
C. Figure 2: Power dissipation at nominal output voltage vs. load current
for minimum, nominal, and maximum input voltage at 25
°
C.
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
25 40 55 70 85
Ambient Air Temperature (°C)
Iout (A)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
Figure 3: Encased converter (without heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
Figure 4: Encased converter (with 1/2” heatsink) max. output power derating vs.
ambient air temperatur e for airflow rates of 100 LFM through 400 LFM. Air flows
acr oss the converter fr om input to output (nominal input voltage).
60
65
70
75
80
85
90
95
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Load Current (A)
Efficiency (%)
9 Vin
32 V in
75 V in
Figure 5: Output voltage response to step-change in load current
(50%-75%-50% of Iout(max); dI/dt = 0.05 A/
µ
s). Load cap: 1
µ
F ceramic
capacitor. Ch 1 : Vo ut ( 2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(1000 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (5 V/div), Ch 2: Vin (50 V/div).
and Figures
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 24
Figure A: Various circuits for driving the ON/OFF pin. Figure B: Internal ON/OFF pin circuitry
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 si tuations.
This series of converters use the industry standard footprint and
pin-out configuration.
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’s output pins to the load.
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.
OpenCollectorEnableCircuit
RemoteEnableCircuit
DirectLogicDrive
NegativeLogic
(PermanentlyEnabled)
ON/OFF
Vin(_)
ON/OFF
ON/OFF
Vin(_)
ON/OFF
5V
TTL/
CMOS
Vin(_)
Vin(_)
TTL
5V
50k
50k
ON/OFF
Vin(_)
100pF
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
Rtrim-down =
(
511
)
-10.22 (kW)
∆%
where
∆% =
Vnominal–Vdesired
x100%
Vnominal
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
Trim graphs show the relationship between the trim resistor
valueandRtrim-upandRtrim-down,showingthetotalrangethe
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:Forthe convertertomeet its full
specifications,themaximumvariationofthedcvalueofVOUT, due
to both trimming and remote load voltage drops, should not be
greater than that specified for the output voltage trim range.
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.
When the input voltage is rising, it must exceed the typical Turn-
On 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
theoutputvoltagedropbelowthespecifiedOutputDCCurrent-
LimitShutdownVoltage,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-up
(k
W)
where Vout=NominalOutputVoltage
511
_ 10.22
5.11VOUTx
(100+
∆%)
1.225∆%∆%
)
=
(
_
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
”onthe
SynQorwebsite.
Startup Inhibit Period:TheStartupInhibitPeriodensuresthat
theconverterwillremainoffforapproximately200mswhenitis
shut down for any reason. When an output short is present, 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
Periodisinitiatedatt0, t1, and t2:
Vin External
Input
Filter Trim
Vin(+)
Iload
Cload
L
Vout(+)
Rtrim-up
or
Rtrim-down
Vsense(+)
ON/OFF
Vin(_)
Vin(+)
Vin(_)
Vout(_)
Vsense(_)
Electrolytic
Capacitor
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Figure E: Internal Input Filter Diagram (component values listed on the specifications page).
C
Before time t0,whentheinputvoltageisbelowtheUVLthreshold,
theunitisdisabledbytheInputUnder-VoltageLockoutfeature.
When the input voltage rises above the UVLthreshold, the
InputUnder-VoltageLockout 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
Periodhas elapsed, and the outputturns on within the typical
Turn-OnTime.
Thermal Considerations: The maximum operating base-
plate temperature, TB,is100ºC.Aslongastheuser’sthermal
system keeps TB < 100 ºC, 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
maximum power the converter can dissipate for a given thermal
conditionifitsbase-plateistobenohigherthan100ºC.
Pmax = 100 ºC-TA
dissRTHBA
Thisvalueofpowerdissipationcanthenbeusedinconjunction
withthedatashowninFigure2todeterminethemaximumload
current(andpower)thattheconvertercandeliverinthegiven
thermal condition.
Forconvenience,powerderatingcurvesforanencasedconverter
without a heatsink and with a typical heatsink are provided for
each output voltage.
Figure F: Startup Inhibit Period (turn-on time not to scale)
Under-Voltage
LockoutTurn-
OnThreshold
ON/OFF
(neglogic)
Vout
Vin
200ms 200ms
200ms
(typical start-up
inhibitperiod)
t0t1t2t
9ms (typical
turnontime)
ON ON ON
OFF OFF
Application Section
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 25
Figure A: Various circuits for driving the ON/OFF pin. Figure B: Internal ON/OFF pin circuitry
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 si tuations.
This series of converters use the industry standard footprint and
pin-out configuration.
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’s output pins to the load.
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.
OpenCollectorEnableCircuit
RemoteEnableCircuit
DirectLogicDrive
NegativeLogic
(PermanentlyEnabled)
ON/OFF
Vin(_)
ON/OFF
ON/OFF
Vin(_)
ON/OFF
5V
TTL/
CMOS
Vin(_)
Vin(_)
TTL
5V
50k
50k
ON/OFF
Vin(_)
100pF
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
Rtrim-down =
(
511
)
-10.22 (kW)
∆%
where
∆% =
Vnominal–Vdesired
x100%
Vnominal
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
Trim graphs show the relationship between the trim resistor
valueandRtrim-upandRtrim-down,showingthetotalrangethe
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:Forthe convertertomeet its full
specifications,themaximumvariationofthedcvalueofVOUT, due
to both trimming and remote load voltage drops, should not be
greater than that specified for the output voltage trim range.
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.
When the input voltage is rising, it must exceed the typical Turn-
On 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
theoutputvoltagedropbelowthespecifiedOutputDCCurrent-
LimitShutdownVoltage,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-up
(k
W)
where Vout=NominalOutputVoltage
511
_ 10.22
5.11VOUTx
(100+
∆%)
1.225∆%∆%
)
=
(
_
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
”onthe
SynQorwebsite.
Startup Inhibit Period:TheStartupInhibitPeriodensuresthat
theconverterwillremainoffforapproximately200mswhenitis
shut down for any reason. When an output short is present, 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
Periodisinitiatedatt0, t1, and t2:
Vin External
Input
Filter Trim
Vin(+)
Iload
Cload
L
Vout(+)
Rtrim-up
or
Rtrim-down
Vsense(+)
ON/OFF
Vin(_)
Vin(+)
Vin(_)
Vout(_)
Vsense(_)
Electrolytic
Capacitor
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Figure E: Internal Input Filter Diagram (component values listed on the specifications page).
C
Before time t0,whentheinputvoltageisbelowtheUVLthreshold,
theunitisdisabledbytheInputUnder-VoltageLockoutfeature.
When the input voltage rises above the UVLthreshold, the
InputUnder-VoltageLockout 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
Periodhas elapsed, and the outputturns on within the typical
Turn-OnTime.
Thermal Considerations: The maximum operating base-
plate temperature, TB,is100ºC.Aslongastheuser’sthermal
system keeps TB < 100 ºC, 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
maximum power the converter can dissipate for a given thermal
conditionifitsbase-plateistobenohigherthan100ºC.
Pmax = 100 ºC-TA
dissRTHBA
Thisvalueofpowerdissipationcanthenbeusedinconjunction
withthedatashowninFigure2todeterminethemaximumload
current(andpower)thattheconvertercandeliverinthegiven
thermal condition.
Forconvenience,powerderatingcurvesforanencasedconverter
without a heatsink and with a typical heatsink are provided for
each output voltage.
Figure F: Startup Inhibit Period (turn-on time not to scale)
Under-Voltage
LockoutTurn-
OnThreshold
ON/OFF
(neglogic)
Vout
Vin
200ms 200ms
200ms
(typical start-up
inhibitperiod)
t0t1t2t
9ms (typical
turnontime)
ON ON ON
OFF OFF
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 26
Figure A: Various circuits for driving the ON/OFF pin. Figure B: Internal ON/OFF pin circuitry
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 si tuations.
This series of converters use the industry standard footprint and
pin-out configuration.
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’s output pins to the load.
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.
OpenCollectorEnableCircuit
RemoteEnableCircuit
DirectLogicDrive
NegativeLogic
(PermanentlyEnabled)
ON/OFF
Vin(_)
ON/OFF
ON/OFF
Vin(_)
ON/OFF
5V
TTL/
CMOS
Vin(_)
Vin(_)
TTL
5V
50k
50k
ON/OFF
Vin(_)
100pF
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
Rtrim-down =
(
511
)
-10.22 (kW)
∆%
where
∆% =
Vnominal–Vdesired
x100%
Vnominal
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
Trim graphs show the relationship between the trim resistor
valueandRtrim-upandRtrim-down,showingthetotalrangethe
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:Forthe convertertomeet its full
specifications,themaximumvariationofthedcvalueofVOUT, due
to both trimming and remote load voltage drops, should not be
greater than that specified for the output voltage trim range.
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.
When the input voltage is rising, it must exceed the typical Turn-
On 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
theoutputvoltagedropbelowthespecifiedOutputDCCurrent-
LimitShutdownVoltage,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-up
(k
W)
where Vout=NominalOutputVoltage
511
_ 10.22
5.11VOUTx
(100+
∆%)
1.225∆%∆%
)
=
(
_
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
”onthe
SynQorwebsite.
Startup Inhibit Period:TheStartupInhibitPeriodensuresthat
theconverterwillremainoffforapproximately200mswhenitis
shut down for any reason. When an output short is present, 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
Periodisinitiatedatt0, t1, and t2:
Vin External
Input
Filter Trim
Vin(+)
Iload
Cload
L
Vout(+)
Rtrim-up
or
Rtrim-down
Vsense(+)
ON/OFF
Vin(_)
Vin(+)
Vin(_)
Vout(_)
Vsense(_)
Electrolytic
Capacitor
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Figure E: Internal Input Filter Diagram (component values listed on the specifications page).
C
Before time t0,whentheinputvoltageisbelowtheUVLthreshold,
theunitisdisabledbytheInputUnder-VoltageLockoutfeature.
When the input voltage rises above the UVLthreshold, the
InputUnder-VoltageLockout 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
Periodhas elapsed, and the outputturns on within the typical
Turn-OnTime.
Thermal Considerations: The maximum operating base-
plate temperature, TB,is100ºC.Aslongastheuser’sthermal
system keeps TB < 100 ºC, 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
maximum power the converter can dissipate for a given thermal
conditionifitsbase-plateistobenohigherthan100ºC.
Pmax = 100 ºC-TA
dissRTHBA
Thisvalueofpowerdissipationcanthenbeusedinconjunction
withthedatashowninFigure2todeterminethemaximumload
current(andpower)thattheconvertercandeliverinthegiven
thermal condition.
Forconvenience,powerderatingcurvesforanencasedconverter
without a heatsink and with a typical heatsink are provided for
each output voltage.
Figure F: Startup Inhibit Period (turn-on time not to scale)
Under-Voltage
LockoutTurn-
OnThreshold
ON/OFF
(neglogic)
Vout
Vin
200ms 200ms
200ms
(typical start-up
inhibitperiod)
t0t1t2t
9ms (typical
turnontime)
ON ON ON
OFF OFF
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 27
Figure A: Various circuits for driving the ON/OFF pin. Figure B: Internal ON/OFF pin circuitry
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 si tuations.
This series of converters use the industry standard footprint and
pin-out configuration.
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’s output pins to the load.
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.
OpenCollectorEnableCircuit
RemoteEnableCircuit
DirectLogicDrive
NegativeLogic
(PermanentlyEnabled)
ON/OFF
Vin(_)
ON/OFF
ON/OFF
Vin(_)
ON/OFF
5V
TTL/
CMOS
Vin(_)
Vin(_)
TTL
5V
50k
50k
ON/OFF
Vin(_)
100pF
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
Rtrim-down =
(
511
)
-10.22 (kW)
∆%
where
∆% =
Vnominal–Vdesired
x100%
Vnominal
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
Trim graphs show the relationship between the trim resistor
valueandRtrim-upandRtrim-down,showingthetotalrangethe
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:Forthe convertertomeet its full
specifications,themaximumvariationofthedcvalueofVOUT, due
to both trimming and remote load voltage drops, should not be
greater than that specified for the output voltage trim range.
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.
When the input voltage is rising, it must exceed the typical Turn-
On 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
theoutputvoltagedropbelowthespecifiedOutputDCCurrent-
LimitShutdownVoltage,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-up
(k
W)
where Vout=NominalOutputVoltage
511
_ 10.22
5.11VOUTx
(100+
∆%)
1.225∆%∆%
)
=
(
_
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
”onthe
SynQorwebsite.
Startup Inhibit Period:TheStartupInhibitPeriodensuresthat
theconverterwillremainoffforapproximately200mswhenitis
shut down for any reason. When an output short is present, 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
Periodisinitiatedatt0, t1, and t2:
Vin External
Input
Filter Trim
Vin(+)
Iload
Cload
L
Vout(+)
Rtrim-up
or
Rtrim-down
Vsense(+)
ON/OFF
Vin(_)
Vin(+)
Vin(_)
Vout(_)
Vsense(_)
Electrolytic
Capacitor
Figure D: Typical application circuit (negative logic unit, permanently enabled).
Figure E: Internal Input Filter Diagram (component values listed on the specifications page).
C
Before time t0,whentheinputvoltageisbelowtheUVLthreshold,
theunitisdisabledbytheInputUnder-VoltageLockoutfeature.
When the input voltage rises above the UVLthreshold, the
InputUnder-VoltageLockout 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
Periodhas elapsed, and the outputturns on within the typical
Turn-OnTime.
Thermal Considerations: The maximum operating base-
plate temperature, TB,is100ºC.Aslongastheuser’sthermal
system keeps TB < 100 ºC, 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
maximum power the converter can dissipate for a given thermal
conditionifitsbase-plateistobenohigherthan100ºC.
Pmax = 100 ºC-TA
dissRTHBA
Thisvalueofpowerdissipationcanthenbeusedinconjunction
withthedatashowninFigure2todeterminethemaximumload
current(andpower)thattheconvertercandeliverinthegiven
thermal condition.
Forconvenience,powerderatingcurvesforanencasedconverter
without a heatsink and with a typical heatsink are provided for
each output voltage.
Figure F: Startup Inhibit Period (turn-on time not to scale)
Under-Voltage
LockoutTurn-
OnThreshold
ON/OFF
(neglogic)
Vout
Vin
200ms 200ms
200ms
(typical start-up
inhibitperiod)
t0t1t2t
9ms (typical
turnontime)
ON ON ON
OFF OFF
Technical
Specification
IQ32-HP Family
Product # IQ32xxxHPXxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005225 Rev. B 5/7/10 Page 28
PART NUMBERING SYSTEM
The part numbering system for SynQor’s dc-dc converters
follows the format shown in the example below.
Thefirst 12characterscomprisethe basepartnumberand
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)DirectivebanstheuseofLead,Cadmium,Hexavalent
Chromium, Mercury, Polybrominated Biphenyls (PBB), and
PolybrominatedDiphenylEther(PBDE)inElectricalandElectronic
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
.
ORDERING INFORMATION
The tables below show the valid model numbers and ordering
options for converters in this product family. When ordering
SynQorconverters,pleaseensurethatyouusethecomplete
15 character part number consisting of the 12 character
base part number and the additional characters for options.
Add“-G”tothemodelnumberfor6/6RoHScompliance.
The following options must be included in place of the
w x y z
spaces in the model numbers listed above.
Not all combinations make valid part numbers, please contact
SynQorforavailability. SeetheProductSummarywebpage for
more options.
PATENTS
SynQorholdsthefollowingpatents,oneormoreofwhich
mightapplytothisproduct:
5,999,417 6,222,742 6,545,890 6,577,109
6,594,159 6,731,520 6,894,468 6,896,526
6,927,987 7,050,309 7,072,190 7,085,146
7,119,524 7,269,034 7,272,021 7,272,023
Warranty
SynQoroffersatwo(2)yearlimitedwarranty.Completewarranty
information is listed on our website or is available upon request from
SynQor.
InformationfurnishedbySynQorisbelievedtobeaccurateandreliable.
However,noresponsibilityisassumedbySynQorforitsuse,norforany
infringements of patents or other rights of third parties which may result
fromitsuse.Nolicenseisgrantedbyimplicationorotherwiseunderany
patentorpatentrightsofSynQor.
Product Family
Package Size
Performance Level
Thermal Design
Output Current
6/6 RoHS
Options (see
Ordering Information)
Input Voltage
Output Voltage
Contact SynQor for further information:
Phone: 978-849-0600
TollFree: 888-567-9596
Fax: 978-849-0602
E-mail: power@synqor.com
Web:
www.synqor.com
Address: 155SwansonRoad
Boxborough,MA01719
USA
Model Number Continuous
Input Voltage Transient Input
Voltage Output
Voltage Maximum
Output Current
IQ32018HP
w
55NRS 9-75V 100V – 100ms 1.8 V 55 A
IQ32033HP
w
45NRS 9-75V 100V – 100ms 3.3 V 45 A
IQ32050HP
w
32NRS 9-75V 100V – 100ms 5.0 V 32 A
IQ32120HP
w
13NRS 9-75V 100V – 100ms 12 V 13 A
IQ32150HP
w
11NRS 9-75V 100V – 100ms 15 V 11 A
IQ32240HP
w
6HNRS 9-75V 100V – 100ms 24 V 6.7 A
IQ32280HP
w
5INRS 9-75V 100V – 100ms 28 V 5.8 A
IQ32400HP
w
04NRS 9-75V 100V – 100ms 40 V 4.0 A
IQ32480HP
w
3ENRS 9-75V 100V – 100ms 48 V 3.4 A
IQ 32 018 H P C 55 N R S - G
Options Description: w x y z
Thermal Design Enable Logic Pin Style Feature Set
C - Encased with
Threaded Baseplate
D - Encased with
Non-Threaded Baseplate
N - Negative R - 0.180" S - Standard
7,558,083 7,564,702
