QM48T14120-NDB0G POWER ONE, QM48T14120-NDB0G Datasheet - Page 9

DC/DC Converters & Regulators

QM48T14120-NDB0G

Manufacturer Part Number
QM48T14120-NDB0G
Description
DC/DC Converters & Regulators
Manufacturer
POWER ONE
Type
Step Downr
Datasheet

Specifications of QM48T14120-NDB0G

Output Power
168W
Output Current
14A
Input Voltage
48V
Output Voltage
12V
Screening Level
Industrial
Product Length (mm)
36.83mm
Product Height (mm)
7.08mm
Product Depth (mm)
58.42mm
Mounting Style
Through Hole
Pin Count
8
Number Of Outputs
1
Package / Case
Quarter-Brick
Product
Isolated
Input Voltage Range
36 V to 75 V
Input Voltage (nominal)
48 V
Output Voltage (channel 1)
12 V
Output Current (channel 1)
14 A
Isolation Voltage
2000 V
Package / Case Size
Quarter Brick
Lead Free Status / RoHS Status
Compliant
Lead Free Status / RoHS Status
Compliant
QM48T/S14120-wxy0 (Non-parallelable version)
Fig. 1: Available load current vs. ambient air temperature and
airflow rates for converter with B height pins mounted
vertically with air flowing from pin 3 to pin 1, MOSFET
temperature  120 C, Vin = 48 V.
Fig. 3:
converter mounted vertically with air flowing from pin 3 to pin
1 at a rate of 300 LFM (1.5 m/s) and Ta = 25 C.
ZD-00376 Rev. 1.1.1, 19-Feb-10
1.00
0.90
0.80
0.70
0.60
16
12
8
4
0
20
0
Efficiency vs. load current and input voltage for
30
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
3
40
Ambient Temperature [°C]
Load Current [Adc]
6
50
60
9
70
12
80
72 V
48 V
36 V
QM48T/S14120 DC-DC Converter Data Sheet
15
90
Page 9 of 20
36-75 VDC Input; 12 VDC @ 14 A Output
Fig. 2: Available load current vs. ambient air temperature and
airflow rates for converter with B height pins mounted
horizontally with air flowing from pin 3 to pin 1, MOSFET
temperature  120 C, Vin = 48 V.
Fig. 4: Efficiency vs. load current and ambient temperature
for converter mounted vertically with Vin = 48 V and air
flowing from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s).
1.00
0.90
0.80
0.70
0.60
16
12
8
4
0
20
0
30
500 LFM (2.5 m/s)
400 LFM (2.0 m/s)
300 LFM (1.5 m/s)
200 LFM (1.0 m/s)
100 LFM (0.5 m/s)
30 LFM (0.15 m/s)
3
40
Ambient Temperature [°C]
Load Current [Adc]
6
50
60
9
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70
12
80
70 C
55 C
40 C
90
15

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