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Q48T08120 DC-DC Converter Data Sheet
36-75 VDC Input; 12VDC @ 8A Output
0.95
0.90
0.85
0.80
0.95
0.90
0.85
0.80
0.75
72 V
54 V
0.75
70 C
55 C
0.70
0.65
36 V
0.70
0.65
40 C
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
Load Current [Adc]
Fig. 14: Efficiency vs. load current and input voltage for con-
verter 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.
0.95
0.90
0.85
0.80
Load Current [Adc]
Fig. 15: Efficiency vs. load current and ambient temperature
for converter mounted vertically with Vin = 54 V and air flowing
from pin 3 to pin 1 at a rate of 200 LFM (1.0 m/s).
0.95
0.90
0.85
0.80
0.75
72 V
54 V
0.75
70 C
55 C
0.70
0.65
36 V
0.70
0.65
40 C
0
1
2
3
4
5
6
7
8
9
10
0
1
2
3
4
5
6
7
8
9
10
Load Current [Adc]
Fig. 16: Efficiency vs. load current and input voltage for con-
verter mounted horizontally with air flowing from pin 3 to pin 4
at a rate of 300 LFM (1.5 m/s) and Ta = 25 ° C.
Load Current [Adc]
Fig. 17: Efficiency vs. load current and ambient temperature
for converter mounted horizontally with Vin = 54 V and air flow-
ing from pin 3 to pin 4 at a rate of 200 LFM (1.0 m/s).
JUN 23, 2004 revised to NOV 20, 2006
Page 11 of 14
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