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Technical Specification
PQ60120QEA17
35-75 V
Input
12 V
Outputs
17 A
Current
2250 V dc
Isolation
Quarter-brick
DC-DC Converter
The PQ60120QEA17 PowerQor(R) Exa quarter-brick converter is a next-generation, board-mountable, isolated, fixed switching frequency DC/DC converter. The Exa series offers industry leading power density for standard isolated DC/DC converters with both a wide input range and a tightly regulated output. Targeted for use in intermediate bus architectures, this module supplies an isolated step down voltage from 35-75V to 12V. This converter is available in open-frame and base-plated versions. RoHS Compliant (see page 14). Operational Features
*Ultra-highefficiency,>95%atfullratedloadcurrent, >96%athalfratedloadcurrent *Deliversupto17Aofoutputcurrent(200W)with minimalderating-noheatsinkrequired *Wideinputvoltagerange:35V-75V,with100V 100msinputvoltagetransientcapability *Fixedfrequencyswitchingprovidespredictable EMIperformance *Nominimumloadrequirementmeansnopreload resistorsrequired *Wideoutputvoltagetrimrange(-50%to+5%),see trimsection
PQ60120QEA17 Module
Protection Features
*Inputunder-voltagelockoutdisablesconverteratlow inputvoltageconditions *Outputcurrentlimitandshortcircuitprotectionprotects converterandloadfrompermanentdamageand consequenthazardousconditions *Activebackbiaslimitprovidessmoothstartupwith externalloadinducedpre-bias *Latchingoutputover-voltageprotectionprotectsload fromdamagingvoltages *Thermalshutdownprotectsconverterfromabnormal environmentalconditions
Mechanical Features
*Industrystandardquarter-brickpin-outconfiguration *Industrystandardsize:1.45"x2.3"(36.8x58.4mm) *Totalheightlessthan0.436"(11.06mm),permits betterairflowandsmallercardpitch *Totalweight:1.6oz.(46grams) *Openframeunitshaveflangedpinsdesignedtopermit surfacemountsoldering(avoidwavesolder)using FPiPtechnique
Safety Features
* 2250V,30Minput-to-outputisolation * UL60950-1:2003BasicInsulation * CAN/CSA-C22.2No.60950-1:2003 * EN60950-1:2001 * RoHScompliant(seepage14)
Contents
Control Features
*On/Offcontrolreferencedtoinputside(positiveand negativelogicoptionsareavailable)
Product # PQ60120QEA17 Phone 1-888-567-9596
MECHANICALDIAGRAM(openframe) . . . . . . . . . . . . . . . . . . . . . . . . . 2 MECHANICALDIAGRAM(base-plated). . . . . . . . . . . . . . . . . . . . . . . . . 3 PQ60120QEA17ELECTRICALCHARACTERISTICS . . . . . . . . . . . . . . . . 4-5 PQ60120QEA17STANDARDSandQUALIFICATION. . . . . . . . . . . . . . . 6-9 ApplicationSection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-13 ORDERINGINFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
www.synqor.com Doc.# 005-0005068 Rev. A 03/19/09
PageNo.
Page 1
Technical Specification
MECHANICAL DIAGRAM (open frame)
2.30
(58.4)
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
0.14
(3.6)
0.43
(10.9)
2.00
(50.8)
0.300 0.150
(3.81) (7.62)
1.45
0.300
(7.62)
Top View
(36.8)
0.450
(11.43)
0.600
(15.24)
0.600
(15.24)
0.436 max
Side View
Bottom side Clearance
See Note 9
(11.06)
0.025 +0.024
(0.64 +0.61) Lowest Component Load Board Flanged Pin See Note 10
0.180
(4.57) See Note 3
NOTES
1) ins1-3,5-7are0.040"(1.02mm)diameterwith P 0.080"(2.03mm)diameterstandoffshoulders. 2) ins4and8are0.062"(1.57mm)diameterwith0.100" P (2.54mm)diameterstandoffshoulders. 3) therpinextensionlengthsavailable.Recommendedpin O lengthis0.03"(0.76mm)greaterthanthePCBthickness. 4) llPins:Material-CopperAlloy A Finish(RoHS5/6)-Tin/LeadoverNickelplate Finish(RoHS6/6)-MatteTinoverNickelplate 5) ndimensionedcomponentsareshownforvisualreferenceonly. U 6) lldimensionsininches(mm) A Tolerances: x.xx+0.02in.(x.x+0.5mm) x.xxx+0.010in.(x.xx+0.25mm) 7) eight:1.5oz.(42g)typical W 8) orkmanship:MeetsorexceedsIPC-A-610CClassII W 9) L/TUVstandardsrequireaclearancegreaterthan0.04"(1.02mm)betweeninputand U outputforbasicinsulation.Thisissueshouldbeconsideredifanycoppertracesareon thetopsideoftheuser'sboard.Notethattheferritecoresareconsideredpartofthe input/primarycircuit. 10) heflangedpinsaredesignedtopermitsurfacemountsoldering(allowingtoavoidthe T wavesolderingprocess)throughtheuseoftheflangedpin-in-pastetechnique. 1 2
PINDESIGNATIONS
PIN NAME Vin(+) ON/OFF FUNCTION Positiveinputvoltage TTLinputtoturn converteronandoff, referencedtoVin(-), withinternalpullup. Negativeinputvoltage Negativeoutputvoltage Negativeremotesense1 Outputvoltagetrim2
3 4 5 6 7 8 1. 2. 3.
Vin(-) Vout(-) SENSE(-) TRIM
SENSE(+) Positiveremotesense3 Vout(+) Positiveremotesense3
SENSE(-)shouldbeconnectedtoVout(-) eitherremotelyorattheconverter.
Notes:
Leave TRIM pin open for nominal output voltage. SENSE(+) should be connected to Vout(+) either remotely or at the converter.
03/19/09 Page 2
Product # PQ60120QEA17
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Doc.# 005-0005068 Rev. A
Technical Specification
MECHANICAL DIAGRAM (base-plated)
2.00
(50.8)
Input: Output: Current: Package:
2.30
(58.4)
35-75 V 12 V 17 A (200W) Quarter-brick
0.600
(15.24)
0.450
(11.43)
0.300
(7.62)
0.14
(3.6)
0.150
(3.81)
0.43
(10.9)
1
Top View
0.600
(15.24)
2 3
8 7 6 5 4
0.300
(7.62)
1.86
(47.2)
1.03
(26.2)
M3 Threaded Inserts 4 Places
See Notes 11 & 12
0.22
(5.6)
0.21
(5.3)
1.45
(36.8)
Side View
0.499 max
(12.67)
Bottom side Clearance
See Note 9
Lowest Component
Load Board
Flanged Pin See Note 10
0.180
(4.57) See Note 3
0.025 +.024
(10.46 +0.60)
NOTES
1) ins1-3,5-7are0.040"(1.02mm)diameterwith0.080" P (2.03mm)diameterstandoffshoulders. 2) ins4and8are0.062"(1.57mm)diameterwith0.100" P (2.54mm)diameterstandoffshoulders. 3) therpinextensionlengthsavailable.Recommendedpinlengthis O 0.03"(0.76mm)greaterthanthePCBthickness. 4) llPins:Material-CopperAlloy A Finish(RoHS5/6)-Tin/LeadoverNickelplate Finish(RoHS6/6)-MatteTinoverNickelplate 5) ndimensionedcomponentsareshownforvisualreferenceonly. U 6) lldimensionsininches(mm) A Tolerances:x.xx+0.02in.(x.x+0.5mm) x.xxx+0.010in.(x.xx+0.25mm) 7) eight:2.4oz.(69g)typical W 8) orkmanship:MeetsorexceedsIPC-A-610CClassII W 9) L/TUVstandardsrequireaclearancegreaterthan0.04"(1.02mm)betweeninput U andoutputforBasicinsulation.Thisissueshouldbeconsideredifanycoppertraces areonthetopsideoftheuser'sboard.Notethattheferritecoresareconsidered partoftheinput/primarycircuit. 10) heflangedpinsaredesignedtopermitsurfacemountsoldering(avoidingthe T wavesolderingprocess)throughtheuseoftheflangedpin-in-pastetechnique. 11) 3screwsusedtoboltunit'sbaseplatetoothersurfacessuchasaheatsinkmust M notexceed0.100"(2.54mm)depthbelowthebaseplatesurface. 12) ppliedtorqueperscrewshouldnotexceed6in-lb(0.7Nm). A
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PINDESIGNATIONS
PIN NAME 1 2 Vin(+) ON/OFF FUNCTION Positiveinputvoltage TTLinputtoturnconverteron andoff,referencedtoVin(-), withinternalpullup. Negativeinputvoltage Negativeoutputvoltage Negativeremotesense1 Outputvoltagetrim2
3 4 5 6 7 8 1. 2. 3.
Vin(-) Vout(-) SENSE(-) TRIM
SENSE(+) Positiveremotesense3 Vout(+) Positiveremotesense3
SENSE(-)shouldbeconnectedtoVout(-)either remotelyorattheconverter.
Notes:
Leave TRIM pin open for nominal output voltage. SENSE(+) should be connected to Vout(+) either remotely or at the converter.
Doc.# 005-0005068 Rev. A
03/19/09
Page 3
Technical Specification
PQ60120QEA17 ELECTRICAL CHARACTERISTICS
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
Ta=25C,airflowrate=300LFM,Vin=48Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40Cto+100Cbaseplatetemperature withappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter
ABSOLUTE MAXIMUM RATINGS InputVoltage Non-Operating Operating OperatingTransientProtection IsolationVoltage InputtoOutput OperatingTemperature StorageTemperature VoltageatON/OFFinputpin INPUT CHARACTERISTICS OperatingInputVoltageRange InputUnder-VoltageLockout Turn-OnVoltageThreshold Turn-OffVoltageThreshold LockoutVoltageHysteresis MaximumInputCurrent No-LoadInputCurrent DisabledInputCurrent ResponsetoInputTransient InputReflectedRippleCurrent InputTerminalRippleCurrent RecommendedInputFuse InputFilterComponentValues(L\C) RecommendedExternalInputCapacitance OUTPUT CHARACTERISTICS OutputVoltageSetPoint OutputVoltageRegulation OverLine OverLoad OverTemperature TotalOutputVoltageRange OutputVoltageRippleandNoise Peak-to-Peak RMS OperatingOutputCurrentRange OutputDCCurrent-LimitInception OutputDCCurrent-LimitShutdownVoltage Back-DriveCurrentLimitwhileEnabled Back-DriveCurrentLimitwhileDisabled MaximumOutputCapacitanceElectrolytic
Min.
Typ.
Max.
Units Notes & Conditions
100 80 100 2250 -40 -55 -2 35 31.5 28 2.5 48 33.0 29.5 3.5 90 10 1.5 5 150 12 3.3/3 100 11.70 12.00 1.0\120 1.0\120 100 11.58 100 20 0 18 2 0 23 5 7 0.5 12 1 12 240 12.42 150 40 17 28 12.30 15 100 125 18 75 34.5 31.0 4.5 7.0 120 40
V V V Vdc C C V V V V V A mA mA V mA mA A F V
Continuous Continuous 100mstransient,squarewave
100Vtransientfor100ms 100%Load,35Vin,trimmedup5%
0.25V/sinputtransient RMSthru4.7Hinductor RMS Fastblowexternalfuserecommended TypicalESR0.1-0.2
H\F Internalvalues;seeFigureF(Lin\C2)
%\mV SeeNote1 %\mV SeeNote1 mV V mV mV A A V A mA mF Oversample,line,load,temperature&life 500MHzbandwidth;SeeNote2 Fullload Fullload Subjecttothermalderating Outputvoltage10%Low SeeNote3 Negativecurrentdrawnfromoutputsource Negativecurrentdrawnfromoutputsource 12Voutat17AResistiveLoad
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Page 4
Technical Specification
PQ60120QEA17 ELECTRICAL CHARACTERISTICS
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
Ta=25C,airflowrate=300LFM,Vin=48Vdcunlessotherwisenoted;fulloperatingtemperaturerangeis-40Cto+100Cbaseplatetemperature withappropriatepowerderating.Specificationssubjecttochangewithoutnotice.
Parameter
Min.
Typ.
500 500 1 27 2 95 96 2250 30 1000
Max.
Units Notes & Conditions
mV mV ms 50%to75%to50%Ioutmax 50%to75%to50%Ioutmax Towithin1%Voutnom Fullload,ON/OFFtoVout=90%nom. MaximumOutputCapacitance,Iout=0A Figures1&2 Figures1&2
DYNAMIC CHARACTERISTICS OutputVoltageduringLoadCurrentTransient StepChangeinOutputCurrent(0.1A/s) StepChangeinOutputCurrent(5A/s) SettlingTime Turn-OnTransient Turn-OnTime 24 OutputVoltageOvershoot EFFICIENCY 100%Load 94 50%Load ISOLATION CHARACTERISTICS IsolationVoltage(dielectricstrength) IsolationResistance IsolationCapacitance(inputtooutput) TEMPERATURE LIMITS FOR POWER DERATING CURVES SemiconductorJunctionTemperature BoardTemperature TransformerTemperature FEATURE CHARACTERISTICS SwitchingFrequencyRegulationStage 235.6 SwitchingFrequencyIsolationStage 117.8 ON/OFFControl(OptionP) Off-StateVoltage -2 On-StateVoltage 4 ON/OFFControl(OptionN) Off-StateVoltage 4 On-StateVoltage -2 ON/OFFControl(EitherOption) ON/OFFControlHysteresis Pull-UpVoltage 4.75 Pull-UpResistance OutputVoltageTrimRange -50 OutputOver-VoltageProtection 113 Over-TemperatureShutdown Over-TemperatureShutdownRestartHysteresis RELIABILITY CHARACTERISTICS CalculatedMTBF(Telcordia)TR-NWT-000332 CalculatedMTBF(MIL-217)MIL-HDBK-217F FieldDemonstratedMTBF
30
ms % % % V M pF
SeeNote4 Packageratedto150C ULratedmaxoperatingtemp130C Oversample,temp&life Oversample,temp&life FiguresA&B MeasuredacrossPins8&4;seetrimsection Overfulltemprange;%ofnominalVout AveragePCBTemperature
125 125 125 238.0 119.0 240.4 120.2 1 18 18 1 1.5 5.00 10 118 120 10 TBD TBD TBD
C C C kHz kHz V V V V V V k % % C C
5.25 +5 123
106Hrs. TR-NWT-000332;80%load,300LFM,40CTa 106Hrs. MIL-HDBK-217F;80%load,300LFM,40CTa 106Hrs. Seewebsitefordetails
Note1:Lineandloadregulationislimitedbydutycyclequantizationanddoesnotindicateashiftintheinternalvoltagereference. Note2:Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQorapplicationssupport(e-mail:support@synqor.com). Note3:IftheoutputvoltagefallsbelowtheOutputDCCurrentLimitShutdownVoltageformorethan50ms,thentheunitwillenterintohiccupmode, witha500msoff-time. Note4:Highervaluesofisolationcapacitancecanbeaddedexternaltothemodule.
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Doc.# 005-0005068 Rev. A
03/19/09
Page 5
Technical Specification
Parameter
STANDARDS COMPLIANCE UL60950-1:2003 CAN/CSA-C22.2No.60950-1:2003 EN60950-1:2001 NeedleFlameTest(IEC695-2-2) IEC61000-4-2 BasicInsulation
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
PQ60120QEA17 STANDARDS COMPLIANCE and QUALIFICATION TESTING
Notes & Conditions
Testonentireassembly;board&plasticcomponentsUL94V-0compliant ESDtest,8kV-NP,15kVair-NP(NormalPerformance)
Note:Anexternalinputfusemustalwaysbeusedtomeetthesesafetyrequirements.ContactSynQorforofficialsafetycertificatesonnew releasesordownloadfromtheSynQorwebsite.
Parameter
QUALIFICATION TESTING LifeTest Vibration MechanicalShock TemperatureCycling Power/ThermalCycling DesignMarginality Humidity Solderability
# Units
32 5 5 10 5 5 5 15pins
Test Conditions
95%ratedVinandload,unitsatderatingpoint,1000hours 10-55Hzsweep,0.060"totalexcursion,1min./sweep,120sweepsfor3axis 100gminimum,2dropsinxandyaxis,1dropinzaxis -40Cto100C,unittemp.ramp15C/min.,500cycles Toperating=mintomax,Vin=mintomax,fullload,100cycles Tmin-10CtoTmax+10C,5Csteps,Vin=mintomax,0-105%load 85C,85%RH,1000hours,continuousVinappliedexcept5min/day MIL-STD-883,method2003
Product # PQ60120QEA17
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Doc.# 005-0005068 Rev. A
03/19/09
Page 6
Technical Specification
100 95 90 20 18 16
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
Power Dissipation (W)
35 Vin 48 Vin 75 Vin 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
14 12 10 8 6 4 2 0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 35 Vin 48 Vin 75 Vin
Efficiency (%)
85 80 75 70 65 60
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.
21 18 15 12 9 6 3 0 25 40 55
o
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)
70
85
Ambient Air Temperature ( C)
Figure 3: Maximum output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing across the converter from pin 1 to pin 3 (nominal input voltage).
Figure 4: Thermal plot of converter at 17A load current (200W) with 55C air flowing at the rate of 200 LFM. Air is flowing across the converter sideways from pin 1 to pin 3 (nominal input voltage).
21 18 15 12 9 6 3 0 25 40 55
o
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)
70
85
Ambient Air Temperature ( C)
Figure 5: Maximum output power derating curves vs. ambient air temperature for airflow rates of 100 LFM through 400 LFM with air flowing lengthwise from input to output (nominal input voltage).
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Figure 6: Thermal plot of converter at 17A load current (200 W) with 55C air flowing at the rate of 200 LFM. Air is flowing across the converter from input to output (nominal input voltage).
Doc.# 005-0005068 Rev. A 03/19/09 Page 7
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Technical Specification
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
Figure 7: Turn-on transient at full load (resistive load) (4ms/div). Ch 1: ON/OFF input (5V/div) Ch 2: Vout (2V/div)
Figure 8: Turn-on transient at zero load (4ms/div). Ch 1: ON/OFF input (5V/ div), Ch 2: Vout (2V/div)
Figure 9: Output voltage response to step-change in load current (50%-75%-50% of Iout(max); dI/dt = 5A/s). Load cap: 1uF ceramic and 10uF tantalum capacitors. Top trace: Vout (500mV/div), Bottom trace: Iout (10A/div).
Figure 10: Output voltage response to step-change in load current (50%-75%-50% of Iout(max): dI/dt = 5A/s). Load cap: 470F, 15 mW ESR tantalum capacitor. Top trace: Vout (500mV/div), Bottom trace: Iout (10A/div).
Figure 13
source impedance
4.7 H
Figure 12 Figure 14
iS
VSOURCE
iC
DC/DC Converter 1 F
VOUT 10 F,
100 F, 0.2W ESR
electrolytic capacitor
ceramic 100mW ESR capacitor tantalum capacitor
Figure 11: Test set-up diagram showing measurement points for Input Terminal Ripple Current (Figure 12), Input Reflected Ripple Current (Figure 13) and Output Voltage Ripple (Figure 14).
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Figure 12: Input Terminal Ripple Current, ic, at full rated output current and nominal input voltage with 4.7H source impedance and 100F electrolytic capacitor (100 mA/div). See Figure 11.
Doc.# 005-0005068 Rev. A 03/19/09 Page 8
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Technical Specification
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
Figure 13: Input reflected ripple current, is, through a 4.7H source inductor, using a 100F input capacitor, at nominal input voltage and rated load current (10mA/div). See Figure 11.
Figure 14: Output voltage ripple at nominal input voltage and rated load current (50mV/div). Load capacitance: 1F ceramic capacitor and 10F tantalum capacitor. Bandwidth: 500 MHz. See Figure 11.
Figure 15: Output voltage response to step-change in input voltage (50V to 100V in 200s). Load cap: 470F, 15 mW ESR tantalum capacitor. Ch 1: Vin (20V/div), Ch 2: Vout (1V/div), at zero load current.
Figure 16: Load current (5A/div) as a function of time when the converter attempts to turn on into a 10 mW short circuit.
15 14 13 12
OVP Shutdown
Output Voltage (V)
11 10 9 8 7 6 5 4 3 2 1 0 -15 -10 -5 0 5 10 15 20 25 30
36Vin 48Vin 75Vin
Load Current (A)
Figure 17: Output voltage vs. load current showing typical current limit curves and OVP shutdown point.
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Page 9
Technical Specification
BASIC OPERATION AND FEATURES
The PowerQor Exa series converter uses a two-stage power conversion topology. The first stage 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-down to achieve the low 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 significantly less energy than Schottky diodes, enabling the PowerQor converter to achieve high efficiency. Dissipation throughout the converter is so low that it does not require a heatsink for operation. Since a heatsink is not required, the PowerQor converter does not need a metal baseplate or potting material to help conduct the dissipated energy to the heatsink. As an open frame module, the PowerQor converter can be built more simply and reliably using high yield surface mount techniques on a PCB substrate. The PowerQor series of half-brick, quarter-brick and eighth-brick converters uses the industry standard footprint and pin-out configuration.
Input: Output: Current: Package:
CONTROL FEATURES
35-75 V 12 V 17 A (200W) Quarter-brick
REMOTE ON/OFF (Pin 2): The ON/OFF input, Pin 2, 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(-). The converter is available with either positive or negative logic used for the ON/OFF input. In the positive logic version, the ON/OFF input is active high (meaning that a high voltage turns the converter on). In the negative logic version, the ON/OFF signal is active low (meaning that a low voltage turns the converter on). Figure A details five possible circuits for driving the ON/OFF pin. 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 connected to Vout(-) at the point on the board where regulation is desired. 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 sense leads (pins 7 and 5) to determine when it should trigger, not the voltage across the converter's output pins (pins 8 and 4). OUTPUT VOLTAGE TRIM (Pin 6): The TRIM input permits the user to adjust the output voltage across the sense leads up or down according to the trim range specifications. SynQor uses industry standard trim equations. To decrease the output voltage, the user should connect a resistor between Pin 6 (TRIM) and Pin 5 (SENSE(-) input). For a desired decrease of the nominal output voltage, the value of the resistor should be:
ON/OFF
ON/OFF
ON/OFF
Vin(_)
Remote Enable Circuit
Vin(_)
Negative Logic (Permanently Enabled)
Vin(_)
Positive Logic (Permanently Enabled)
Rtrim-down =
where
(511) _ 10.22 D%
kW
ON/OFF
CMOS
5V ON/OFF
D% =
Vnominal - Vdesired Vnominal
x 100%
Vin(_)
Open Collector Enable Circuit
Vin(_)
Direct Logic Drive
Figure A: Various circuits for driving the ON/OFF pin.
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Technical Specification
To increase the output voltage, the user should connect a resistor between Pin 6 (TRIM) and Pin 7 (SENSE(+) input). For a desired increase of the nominal output voltage, the value of the resistor should be
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
Rtrim-up =
where
(
5.11VOUT(100+D%) _ 511 _ 10.22
1.225D%
D%
)
few hundred hours, but not for an indefinite period or the product lifetime. The OVP trip point is set above this level, so it will not shut down from output overvoltage protection when trimmed up between 5% and 10%. Continuous operation of this converter while trimmed up more than 5% could affect long term reliability. 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.
(kW)
VOUT = Nominal Output Voltage Figure B graphs the relationship between the trim resistor value, Rtrim-up and Rtrim-down, showing the total range the output voltage can be trimmed up or down.
0 1,000,000.0 5 10 15 20 25 30 35 40 45 50
PROTECTION FEATURES
Input Under-Voltage Lockout: The converter is designed to turn off when the input voltage is too low, helping to avoid an input system instability problem, which is described in more detail in the application note titled "Input System Instability" on the SynQor 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* 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: If the output current exceeds the "Output DC Current Limit Inception" point*, then a fast linear current limit controller will reduce the output voltage to maintain a constant output current. If as a result, the output voltage falls below the "Output DC Current Limit Shutdown Voltage"* for more than 50ms, then the unit will enter into hiccup mode, with a 500ms off-time. The unit will then automatically attempt to restart.
100,000.0
Trim Resistance (kOhms)
10,000.0
1,000.0
100.0
10.0
1.0
0.1 % Increase in Vout % Decrease in Vout
Figure B: Trim Graph for 12Vout module
Note: The TRIM feature does not affect the voltage at which the output over-voltage protection circuit is triggered. Trimming the output voltage too high may cause the over-voltage protection circuit to engage, particularly during transients. It is not necessary for the user to add capacitance at the Trim pin. The node is internally filtered to eliminate noise. Limited 10% up-trim: This converter is capable of operating for an indefinite period of time with the output trimmed up to 5% above the nominal 12V output level*. It may also be trimmed down by as much as 50% (to 6.0V) indefinitely. This converter is also capable of being trimmed up by as much as 10% (up to 13.2V) for shorter periods of time that are not a significant fraction of the product lifetime. For example, in a test situation, or for output voltage margining where it would remain trimmed up between 5% and 10% of the nominal voltage for a
Product # PQ60120QEA17 Phone 1-888-567-9596
Back-Drive Current Limit: If there is negative output current of a magnitude larger than the "Back-Drive Current Limit while Enabled" specification*, then a fast back-drive limit controller will increase the output voltage to maintain a constant output current. If this results in the output voltage exceeding the "Output OverVoltage Protection" threshold*, then the unit will shut down. The full I-V output characteristics can be seen in Figure 17. Output Over-Voltage Limit: If the voltage directly across the output pins exceeds the "Output Over-Voltage Protection" threshold*, the converter will immediately stop switching. This shutdown is latching; unlike other shutdown types, the converter will not restart unless the input power is cycled or the ON/OFF input is toggled. 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 falls by the amount of the "Over-Temperature Shutdown Restart Hysteresis" value*. * See Electrical Characteristics page.
Doc.# 005-0005068 Rev. A 03/19/09 Page 11
www.synqor.com
Technical Specification
APPLICATION CONSIDERATIONS
Limited Output Voltage Resolution: The internal voltage control feedback loop has limited resolution. Therefore, the output voltage will exhibit discrete steps as the loop responds to changes in line, load, trim, or remote sense. For instance, on close examination, the startup ramp has a "stair-step" shape. Likewise, a load transient response will be composed of multiple discrete steps. The size of each step is well determined, and is shown in Figure C. A close-up picture of a single step is shown in Figure D. Stepping will not occur under steady state conditions. Current share and active trim not recommended: It is important to note that external feedback control using the sense or trim pins will cause sustained stepping. External current share or active trim circuits contain a separate reference voltage. After this external feedback has taken control, the actual output voltage can still differ from the external reference voltage by as much as the step size. If the external feedback loop integrates this error voltage, it will cause a limit cycle oscillation. For this reason, external feedback using the sense and trim pins is not recommended.
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
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 System Instability" is available on the SynQor website which provides an understanding of why this instability arises, and shows the preferred solution for correcting it.
140 120
Vout Step Size (mV)
100 80 60 40 = 12.0 Vout 20 0 35 40 45 50 55 60 65 70 75 = 10.0 Vout 8.75 Vout
Vin (V)
Figure C: Output voltage resolution.
Figure D: Smallest possible Vout step at 48Vin and 12Vout.
* See Electrical Characteristics page.
Product # PQ60120QEA17 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005068 Rev. A 03/19/09 Page 12
Technical Specification
Application Circuits: Figure E below provides a typical circuit diagram which details the input filtering and voltage trimming. Input Filtering and External Input Capacitance: Figure F below shows 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 Specifications page. More detailed information is available in the application note titled "EMI Characteristics" on the SynQor website. Output Filtering and External Output Capacitance: Figure F below shows the internal output filter components. This filter dramatically reduces output voltage ripple. However, some minimum external output capacitance is required, as specified in the Output Characteristics section on the Electrical Specifications page. No damage will occur without this capacitor connected, but peak output voltage ripple will be much higher.
Input: Output: Current: Package:
35-75 V 12 V 17 A (200W) Quarter-brick
RoHS Compliance: The EU led RoHS (Restriction of Hazardous Substances) Directive bans the use of Lead, Cadmium, Hexavalent Chromium, Mercury, Polybrominated Biphenyls (PBB), and Polybrominated Diphenyl Ether (PBDE) in Electrical and Electronic Equipment. This SynQor product is available as 5/6 RoHS compliant (product with lead) or 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.
Vin
External Input Filter
Electrolytic Capacitor ESR @0.2W
Vin(+)
Vout(+) Vsense(+) Rtrim-up
or
100F
ON/OFF
Trim
Vsense(_) Vin(_) Vout(_)
Rtrim-down
Cload
Iload
Figure E: Typical application circuit (negative logic unit, permanently enabled).
Lin
Vin(+) C1 Vin(_) C2
Regulation Stage Isolation Stage
Vout(+)
Current Sense
Vout(_)
Figure F: Internal Input and Output Filter Diagram (component values listed on specifications page).
Product # PQ60120QEA17 Phone 1-888-567-9596 www.synqor.com Doc.# 005-0005068 Rev. A 03/19/09 Page 13
Technical Specification
PART NUMBERING SYSTEM
The part numbering system for SynQor's NiQor dc-dc converters follows the format shown in the example below.
PQ 6 0 12 0 Q E A 1 7 N N S Options Output Current Thermal Design Performance Level Package Size Output Voltage Input Voltage Product Family
(see Ordering Info) (see Ordering Information)
Input: Output: Current: Package:
ORDERING INFORMATION
35-75 V 12 V 17 A (200W) Quarter-brick
The tables below show the valid model numbers and ordering options for converters in this product family. When ordering SynQor converters, please ensure that you use the complete 15 character part number consisting of the 12 character base part number and the additional characters for options. A "-G" suffix indicates the product is 6/6 RoHS compliant.
Model Number PQ60120QEw17xyz Input Voltage
35-75V
Output Voltage
12V
Max Output Current
17A
The following options must be included in place of the w x y z spaces in the model numbers listed above.
Options Description: w x y z Thermal Design
A-OpenFrame B-Baseplated
The first 12 characters comprise the base part number and the last 3 characters indicate available options. Although there are no default values for enable logic and pin length, the most common options are negative logic and 0.145" pins. These part numbers are more likely to be readily available in stock for evaluation and prototype quantities. A "-G" suffix indicates 6/6 RoHS compliance.
Enable Logic
P-Positive N-Negative
Pin Style
K-0.110" N-0.145" R-0.180" Y-0.250"
Feature Set
S-Standard
Application Notes
A variety of application notes and technical white papers can 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 pageore-mailusatrohs@synqor.com.
PATENTS
SynQor holds the following patents, one or more of which might apply to this product: 5,999,417 6,594,159 6,927,987 7,119,524 6,222,742 6,731,520 7,050,309 7,269,034 6,545,890 6,894,468 7,072,190 7,272,021 6,577,109 6,896,526 7,085,146 7,272,023
Warranty SynQoroffersathree(3)yearlimitedwarranty.CompletewarrantyinformationislistedonourwebsiteorisavailableuponrequestfromSynQor. InformationfurnishedbySynQorisbelievedtobeaccurateandreliable. However,noresponsibilityisassumedbySynQorforitsuse,norforany infringementsofpatentsorotherrightsofthirdpartieswhichmayresult fromitsuse.Nolicenseisgrantedbyimplicationorotherwiseunderany patentorpatentrightsofSynQor.
Contact SynQor for further information:

Phone: TollFree: Fax: E-mail: Web: Address:
978-849-0600 888-567-9596 978-849-0602 power@synqor.com www.synqor.com 155SwansonRoad Boxborough,MA01719 USA
Phone 1-888-567-9596
Product # PQ60120QEA17
www.synqor.com
Doc.# 005-0005068 Rev. A
03/19/09
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