QM48T/S14120 DC-DC Converter Data Sheet
36-75 VDC Input; 12 VDC @ 14 A Output
Electrical Specifications for Single Converter with Non-Paralleling Option
Conditions: TA = 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, unless otherwise specified.
Parameter
Notes
Min
Typ
Max Units
Maximum Input Current
14 ADC @ 36 VDC In
5.15
11.88 12.00 12.12
ADC
VDC
mV
Output Voltage Set Point (no load)
Output Regulation Over Line
Output Regulation Over Load
Output Voltage Range
±4
±4
±10
±10
mV
Over line, load and temperature2
Over line, load and temperature3
11.8
11.0
12.2
12.2
VDC
VDC
Output Ripple and Noise – 25 MHz bandwidth Full load + 10 µF tantalum + 1 µF ceramic
100
140 mVPK-PK
External Load Capacitance
Output Current Range
Current Limit Inception
Peak Short-Circuit Current
RMS Short-Circuit Current
Dynamic Response
Plus full load (resistive)
2,200
14
µF
ADC
ADC
A
0
Non-latching
15.0
16.0
19
17.0
22
Non-latching, Short = 10 mꢀ
Non-latching
3.5
Arms
Load Change 50%-75%-50%, di/dt = 0.1 A/µs Co = 100 µF POS + 1 µF ceramic
240
50
mV
µs
Settling Time to 1%
Efficiency
100% Load
92
94
%
%
50% Load
Electrical specifications for Single Converter with Paralleling Option
Conditions: TA = 25 ºC, Airflow = 300 LFM (1.5 m/s), Vin = 48 VDC, unless otherwise specified.
Parameter
Notes
Min
Typ
Max Units
Maximum Input Current
14 ADC @ 36 VDC In
4.75
12.15 12.27 12.44
ADC
VDC
mV
Output Voltage Set Point (no load)
Output Regulation Over Line
Output Regulation Over Load
Output Voltage Range
±4
±10
0.6
0.5
V
Over line, load and temperature2
Over line, load and temperature3
11.5
11.0
12.5
12.5
VDC
VDC
Output Ripple and Noise – 25 MHz bandwidth Full load + 10 µF tantalum + 1 µF ceramic
100
140 mVPK-PK
External Load Capacitance
Output Current Range
Current Limit Inception
Peak Short-Circuit Current
RMS Short-Circuit Current
Dynamic Response
Plus full load (resistive)
2,200
14
µF
ADC
ADC
A
0
Non-latching
15.0
16.0
19
17.0
22
Non-latching, Short = 10 mꢀ
Non-latching
3.5
Arms
Load Change 50%-75%-50%, di/dt = 0.1 A/µs Co = 100 µF POS + 1 µF ceramic
240
50
mV
µs
Settling Time to 1%
Efficiency
100% Load
92
94
%
%
50% Load
Additional Notes:
2
For Vin ≥ 40 V, IO = 14 A, -40 °C ≤ Tamb ≤ 85 °C.
For Vin ≥ 36 V, IO = 14 A, -40 °C ≤ Tamb ≤ 85 °C.
3
ZD-00376 Rev. 1.1.1, 19-Feb-10
Page 3 of 20
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