Manual
GE
Data Sheet
QBVW033A0B Barracuda Series; DC-DC Converter Power Modules
36-75Vdc Input; 12.0Vdc, 33.0A, 400W Output
May 21, 2013 ©2012 General Electric Company. All rights reserved. Page 5
Characteristic Curves, 12V
dc
Output
The following figures provide typical characteristics for the QBVW033A0B (12V, 33A) at 25ºC. The figures are identical for either
positive or negative Remote On/Off logic.
INPUT CURRENT, I
i
(A)
η
INPUT VOLTAGE, V
O
(V)
OUTPUT CURRENT, I
O
(A)
Figure 1. Typical Input Characteristic. Figure 2. Typical Converter Efficiency vs. Output Current.
OUTPUT VOLTAGE,
V
O
(V) (50mV/div)
OUTPUT CURRENT OUTPUT VOLTAGE
I
O
(A) (10A/div) V
O
(V) (200mV/div)
TIME, t (2s/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
UTPUT V
O
LTA
G
E INPUT V
O
LTA
G
E
V
O
(V) (5V/div) V
IN
(V) (20V/div)
OUTPUT VOLTAGE On/Off VOLTAGE
V
O
(V) (5V/div) V
ON/OFF
(V)(2V/div)
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.