GE Industrial Solutions EHHD020A0F Hammerhead Series - Manual (Page 5)

GE Data Sheet
EHHD020A0F Hammerhead™ Series; DC-DC Converter Power Modules
18-75Vdc Input; 3.3Vdc, 20.0A, 66W Output
April 4, 2013 ©2012 General Electric Company. All rights reserved. Page 5
Characteristic Curves
The following figures provide typical characteristics for the EHHD020A0F (3.3V, 20A) at 25 o C. The figures are identical for either
positive or negative remote On/Off logic.
EFFICIENCY,

(
%
)
OUT
PU
T V
O
LT
AG
E
O
U
TP
UT
CUR
RE
N
T
V O
(V) (100
mV/
di
v)
Io
(A
) (
5A/
di
v)
OUTPUT CURRENT, I
O
(A) TIME, t (200µs/div)
Figure 1. Converter Efficiency versus Output Current. Figure 4. Transient Response to 0.1A/µS Dynamic Load
Change from 50% to 75% to 50% of full load, Vin=48V,
C
O
>100μF.
OUT
PU
T V
O
LT
AGE
V
O
(V)
(5
0mV/div)
O
U
TPUT
VO
LTA
G
E
O
n/
O
ff V
O
LT
AG
E
V
O
(V
) (
1V
/di
v)
V
On
/Off
(V
) (2
V/
di
v)
TIME, t (2s/div) TIME, t (10ms/div)
Figure 2. Typical output ripple and noise (I
o
= I
o,max
). Figure 5. Typical Start-up Using Remote On/Off, negative
logic version shown (V
IN
= 24V or 48V, I
o
= I
o,max
).
O
U
TPU
T
VO
LTAG
E
O
U
TPU
T
CU
RRE
N
T
V
O
(V
) (
10
0mV/
di
v)
I
o(
A)
(5A
/div)
O
U
TPU
T V
O
LTAGE
IN
PU
T
VO
LTA
G
E
V
O
(V
) (
1V
/di
v)
V
IN
(V
) (10V
/div)
TIME, t (200µs/div) TIME, t (10ms/div)
Figure 3. Transient Response to 0.1A/µS Dynamic Load Change
from 50% to 75% to 50% of full load, Vin=24V, C
O
>100μF.
Figure 6. Typical Start-up Using Input Voltage (V
IN
= 24V, I
o
= I
o,max
).