ALQ25B50_03 Datasheet, PDF (9/11 Pages) Astec America, Inc – Industry Standard ¼ Brick: 300W DC Transformer

Technical Reference Notes
ALQ25B50 Bus Converter
DC Transformer
Performance Curves
Load Regulation, V_IN = 48V, T_A = 25ºC
12.50
12.40
12.30
12.20
12.10
12.00
11.90
11.80
11.70
11.60
11.50
11.40
11.30
11.20
11.10
11.00
0
5
10
15
20
25
Output Current [A]
Line Regulation, I_O = I_O,MAX, T_A = 25ºC
14.75
14.00
13.25
12.50
11.75
11.00
10.25
9.50
42 43 44 45 46 47 48 49 50 51 52 53
Input Voltage [V]
Figure 7. Load Regulation at V_IN = V_{IN, NOM} = 48Vdc, T_A
= 25ºC with 400LFM airflow directed across pin 3 to 1.
Figure 8. Line Regulation at I_O = I_{O, MAX} = 25A, T_A = 25ºC
with 400LFM airflow directed across pin 3 to 1.
Output Derating Curves
25
20
15
10
0 LFM (0 m/ s)
100 LFM (0.5m/ s)
5
200 LFM (1 m/ s)
400 LFM (2 m/s)
0
25
40
55
70
85
Ambient Temperature [°C]
Figure 9. Output Derating curves at V_IN = 48Vdc with
400LFM airflow directed across pin 3 to 1.
MODEL: ALQ25B50 SERIES
SEPTEMBER 11, 2003 - REVISION A (PRELIMINARY)
SHEET 9 OF 11