Product # IQ36xxxQTCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-IQ36QTX Rev. A 06/06/08 Page 20
Technical Specification
Input:
Output:
Current:
Part no.:
18-75 V
30 V
4.0 A
IQ36300QTC04
Parameter Min. Typ. Max. Units notes & Conditions
InPUT ChARACTeRISTICS
MaximumInputCurrent 9.7 A 18V
IN
;trimup;incurrentlimit
No-LoadInputCurrent 80 100 mA
DisabledInputCurrent 2.0 4.0 mA
ResponsetoInputTransient 0.9 V 1000V/msinputtransient;100µFoutputcap.
InputTerminalRippleCurrent 370 mA RMS
RecommendedInputFuse 20 A Fastactingexternalfuserecommended
InputFilterComponentValues(L\C) 1.0\6.6 µH\µF Internalvalues;seeFigureE
OUTPUT ChARACTeRISTICS
OutputVoltageSetPoint 29.7 30.0 30.3 V
OutputVoltageRegulation
OverLine +0.1 +0.3 %
OverLoad +0.1 +0.3 %
OverTemperature -450 450 mV
TotalOutputVoltageRange 29.25 30.75 V Oversample,line,load,temperature&life
OutputVoltageRippleandNoise1 20MHzbandwidth
Peak-to-Peak 40 60 mV FullLoad
RMS 10 20 mV FullLoad
OperatingOutputCurrentRange 0 4.0 A Subjecttothermalderating
OutputDCCurrent-LimitInception 4.4 4.8 5.2 A OutputVoltage10%Low
OutputDCCurrent-LimitShutdownVoltage 14.8 V
Back-DriveCurrentLimitwhileEnabled 0.09 A Negativecurrentdrawnfromoutput
Back-DriveCurrentLimitwhileDisabled 0 16 50 mA Negativecurrentdrawnfromoutput
MaximumOutputCapacitance 250 µF Voutnominalatfullload(resistiveload)
OutputVoltageduringLoadCurrentTransient
ForaStepChangeinOutputCurrent(0.05A/µs) 1100 mV 50%to75%to50%I
OUT
max
SettlingTime 50 µs Towithin1%V
OUT
nom
OutputVoltageTrimRange -20 +10 % MeasuredacrossPins8&4;CommonFigure3
OutputVoltageRemoteSenseRange +10 % MeasuredacrossPins8&4
OutputOver-VoltageProtection 117 122 127 % Overfulltemprange;%ofnominalV
OUT
LoadCurrentScaleFactor 44 SeeOutputLoadCurrentapp.noteonourweb
eFFICIenCy
100%Load 90 % SeeFigure1forefficiencycurve
50%Load 92 % SeeFigure1forefficiencycurve
note 1:Outputisterminatedwith1µFceramic.

Forapplicationsrequiringreducedoutputvoltagerippleandnoise,consultSynQorapplicationssupport(e-mail:support@synqor.com)
IQ36300QTC04 eleCTRICAl ChARACTeRISTICS (30 VOUT)
TA=25°C,airflowrate=300LFM,VIN=36VDCunlessotherwisenoted;fulloperatingtemperaturerangeis-40°Cto+100°C
ambienttemperaturewithappropriatepowerderating.
Specificationssubjecttochangewithoutnotice.
Product # IQ36xxxQTCxx Phone 1-888-567-9596 www.synqor.com Doc.# 005-IQ36QTX Rev. A 06/06/08 Page 21
Technical Specification
Input:
Output:
Current:
Part no.:
18-75 V
30 V
4.0 A
IQ36300QTC04
0
2
4
6
8
10
12
14
16
18
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Load Current (A)
Power Dissipation (W)
18 Vin
36 Vin
75 Vin
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 (%)
18 Vin
36 Vin
75 Vin
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.
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
4.5
025 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 temperature for airflow rates of 100 LFM through 400 LFM. Air flows
across the converter from pin 3 to pin 1 (nominal input voltage).
Figure 4: Encased converter (with 1/4” heatsink) max. output power derating vs.
ambient air temperature for airflow rates of 100 LFM through 400 LFM. Air flows
across the converter from pin 3 to pin 1 (nominal input voltage).
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: Vout
(2 V/div), Ch 2: Iout (1 A/div).
Figure 6: Output voltage response to step-change in input voltage
(250 V/ms). Load cap: 100
µ
F, electrolytic output capacitance.
Ch 1: Vout (1 V/div), Ch 2: Vin (2 0 V/div).