GE Industrial Solutions QBVW025A0B Barracuda Series - Manual (Page 5)

GE
Data Sheet
QBVW025A0B Barracuda™ Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output
May 9, 2013 ©2012 General Electric Company. All rights reserved. Page 5
Characteristic Curves, 12V
dc
Output
The following figures provide typical characteristics for the QBVW025A0B (12V, 25A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
IN
PU
T CURR
EN
T, I
i
(A)
EFFC
IE
N
C
Y,
η (%
)
INPUT VOLTAGE, V
O
(V) OUTPUT CURRENT, I
O
(A)
Figure 1. Typical Input Characteristic. Figure 2. Typical Converter Efficiency Vs. Output Current.
OUT
PUT
VOL
TAGE,
V O
(V
) (5
0m
V/d
iv)
OUT
PUT
C
U
RR
ENT
OU
TPUT
VO
LT
AGE
I
O
(A)
(5
A/
div)
V O
(V)
(2
00
m
V/d
iv
)
TIME, t (2s/div) TIME, t (500 μs/div)
Figure 3. Typical Output Ripple and Noise, I
o
= I
o,max
. Figure 4. Typical Transient Response to 0.1A/µs Step Change
in Load from 50% to 75% to 50% of Full Load, Co=470µF and
48 Vdc Input.
O
U
TP
UT VOLTA
G
E
IN
PU
T
VOLTA
G
E
V
O
(V
) (5V/d
iv)
V IN
(V) (2
0V
/d
iv
)
OUTPUT VOLTA
G
E
On
/Of
f VOL
TAGE
V
O
(V)
(5V/div)
V
ON/OF
F
(V
)(2
V/d
iv
)
TIME, t (20 ms/div) TIME, t (5 ms/div)
Figure 5. Typical Start-Up Using Vin with Remote On/Off
enabled, negative logic version shown. Figure 6. Typical Start-Up Using Remote On/Off with Vin
applied, negative logic version shown.