QBE025A0B1 Datasheet, PDF (6/16 Pages) Lineage Power Corporation – 42 - 53Vdc input; 12Vdc Output; 25A output current

Data Sheet
March 27, 2008
QBE025A0B Series Power Modules, DC - DC Converters:
42 – 53Vdc input; 12Vdc Output; 25A output current
Characteristic Curves
The following figures provide typical characteristics for the QBE025A0B (12V, 25A) at 25ºC. The figures are identical
for either positive or negative Remote On/Off logic.
9
8
7
6
Io=25A
5
4
3
2
Io=12.5A
Io=0A
1
0
38
40
42
44
46
48
50
52
54
INPUT VOLTAGE, V_O (V)
TIME, t (500 μs/div)
Figure 1. Typical Input Characteristic at Room
Temperature
Figure 4. Typical Start-Up Using Remote On/Off,
negative logic version shown.
95
94
93
92
Vin=48V
91
Vin=42V
Vin=53V
90
89
88
87
86
85
0
5
10
15
20
25
OUTPUT CURRENT, I_O (A)
TIME, t (200 μs/div)
Figure 2. Typical Converter Efficiency Vs. Output
current at Room Temperature
Figure 5. Typical Transient Response to Step change
in Load from 25% to 50% to 25% of Full Load at Room
Temperature and 48 Vdc Input.
42 Vin
48 Vin
53 Vin
TIME, t (1μs/div)
Figure 3. Typical Output Ripple and Noise at Room
Temperature and I_o = I_o,max
TIME, t (200 μs/div)
Figure 6. Typical Transient Response to Step Change
in Load from 50% to 75% to 50% of Full Load at Room
Temperature and 48 Vdc Input
6
LINEAGE POWER