GE Industrial Solutions QBVE078A0S10R4 Barracuda Series - Manual (Page 5)

GE
Data Sheet
QBVE078A0S10R4 Barracuda Series; DC-DC Converter Power Modules
45-56Vdc Input; 10.4Vdc, 78.0A, 810W Output
January 15, 2014 ©2012 General Electric Company. All rights reserved. Page 5
Characteristic Curves, 10.4V
dc
Output
The following figures provide typical characteristics for the QBVE078A0S10R4 (10.4V, 78A) at 25ºC. The figures are identical for
either positive or negative Remote On/Off logic.
IN
PU
T CU
RR
EN
T, I
i
(A)
EF
FC
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.
OU
TP
U
T VO
LT
A
G
E,
V O
(V
) (50
m
V/
di
v)
O
U
TP
UT
CU
RR
EN
T
O
U
TP
U
T
VOL
TAGE
I
O
(A) (
20A/div
)
V O
(V)
(200m
V/
div
)
TIME, t (5s/div) TIME, t (500 μs/div)
Figure 3. Typical Output Ripple and Noise, I
o
= I
o,max
C
O
=750µF.
Figure 4. Typical Transient Response to 1A/µs Step Change in
Load from 50% to 75% to 50% of Full Load, C
O
=3200µF and 48
V
dc
Input.
OU
TP
U
T VO
LT
AG
E
IN
PU
T VOL
TAG
E
V
O
(V) (5V/div
)
V
IN
(V) (20V
/div)
OUTPUT V
O
LT
A
G
E
O
n/Off
VOL
TAGE
V
O
(V) (5V/div)
V
ON
/O
FF
(V
)2
V/
di
v)
TIME, t (5 ms/div) TIME, t (5 ms/div)
Figure 5. Typical Start-Up Using Vin with Remote On/Off
enabled, negative logic version shown, I
o
= I
o,max
.
Figure 6. Typical Start-Up Using Remote On/Off with Vin
applied, negative logic version shown I
o
= I
o,max
.