GE Industrial Solutions CAR1212DC series - Manual (Page 7)

GE
Data Sheet
CAR1212DC series DC-DC converter
Input: -36V
D C
to -75V
DC
; Output: 12V
DC
@ 1200W; 3.3V
DC
or 5 V
DC
@ 1A
October 21, 2013 ©2013 General Electric Company. All rights reserved. Page 7
Characteristic Curves
The following figures provide typical characteristics for the CAR1212DC converter at 25 o C
EF
FI
CIE
NCY
, η
(
%
)
V IN
(V
) (
50
V/d
iv
),
V O
(V
) (
5V/
di
v)
V
3.3
(V
) (
2V/
di
v)
, D
COK
(2
V/
div)
Output current, A TIME, t (50ms/div)
Figure 1. Converter Efficiency versus Output Current. Figure 2. Input start up (Vin: -48V
DC
, full load).
V O
N
(V
) (
5V
/d
iv
), V
O
(V
) (
5V
/d
iv
)
V
3.3
(V)
(2
V/
di
v)
, D
COK
(2
V/
div)
O
U
TP
U
T V
O
LTA
G
E
V O
(V
) (
5V/
di
v)
TIME, t (2ms/div) TIME, t (5ms/div)
Figure 3. Start-up Using Remote On/Off
(Vin: -48V
DC
, full load)
Figure 4. 12V start-up (Vin: -48V
DC
, full load)
O
U
TP
U
T V
O
LTA
G
E
V O
(V
) (
50
m
V/
div)
V ON
(V
) (
5V
/d
iv
), V
O
(V
) (
5V
/d
iv
)
V
3.3
(V)
(2
V/
di
v)
, D
COK
(2
V/
div)
TIME, t (5µs/div) TIME, t (10ms /div)
Figure 5. 12V output ripple and noise (Vin: -48V
DC
, full load). Figure 6. Turn-OFF via Remote ON/OFF
(Vin: -48V
DC
, full load)
70
75
80
85
90
95
10 30 50 70 90 110
Input
3.3Vsb
12V
DCOK
12V
DCOK
3.3Vsb
Remote ON/OFF
Remote ON/OFF
3.3Vsb
DCOK
12V