JUN 09, 2003 revised to NOV 20, 2006
Page 10 of 14
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Q48T30025 DC-DC Converter Data Sheet
36-75 VDC Input; 2.5 VDC @ 30A Output
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
Load
Current
[A
dc]
0
5
10
15
20
25
30
35
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)
Fig. 10: Available load current vs. ambient air temperature and
airflow rates for converter mounted vertically with Vin = 54 V,
air flowing from pin 3 to pin 1 and maximum FET temperature
≤
120
°C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
Load
C
u
rrent
[A
dc]
0
5
10
15
20
25
30
35
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)
Fig. 12: Available load current vs. ambient temperature and
airflow rates for converter mounted horizontally with Vin = 54
V, air flowing from pin 3 to pin 4 and maximum FET tempera-
ture
≤ 120°C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
Load
Current
[A
dc]
0
5
10
15
20
25
30
35
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)
Fig. 11: Available load current vs. ambient air temperature and
airflow rates for converter mounted vertically with Vin = 54 V,
air flowing from pin 3 to pin 1 and maximum FET temperature
≤
105
°C.
Ambient Temperature [°C]
20
30
40
50
60
70
80
90
Load
Current
[A
dc]
0
5
10
15
20
25
30
35
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)
Fig. 13: Available load current vs. ambient temperature and
airflow rates for converter mounted horizontally with Vin = 54
V, air flowing from pin 3 to pin 4 and maximum FET tempera-
ture
≤ 105°C.