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SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Input Specifications
Parameter
DC Input Voltage
Hold-up Time
Input Current
Inrush Surge Current
Conditions/Description
Continuous input range.
On all outputs.
@ -53 VDC
At full-rated load.
@ -40 VDC
Excluding Xcap. @ 25 oC
Min.
-40
Nom.
-53
5
35
35
Max.
-75
Units
VDC
ms
A
A pk
Output Specifications
Parameter
Efficiency
Conditions/Description
With Vin at -40 VDC and 50% to 75% load on
Min.
Nom.
90
Max.
Units
%
NOTE: Internal fan is
V1.
considered part of the
load as it is driven from
the 12V output; Vaux load
is set to 0.5A for
efficiency measurements.
With Vin at -40 VDC and 75% to 100% load on
V1.
With Vin at -70 VDC and 50% to 75% load on
V1.
With Vin at -70 VDC and 75% to 100% load on
90
91
91
%
%
%
V1.
Minimum Load
Minimum loading required to maintain
0.5
A
regulation.
Output Power
Overshoot
Input of -40 to -75 VDC:
Output voltage overshoot at turn-on. Overshoot
1200
<5
W
%
lasts <5 ms.
Transient Response
Maximum recovery time to within 1% of initial
set point due to a 25% load change, 1A/μs.
12V output:
Standby output:
5
5
ms
ms
Maximum deviation:
12V output:
Standby output:
3
3
%
%
Turn-On Delay
with PS_ON signal
Time required for initial output voltage
stabilization after application of DC input or
3000
ms
ON/OFF signal.
Output Regulation
See Model Selection data on page 1.
MCD10133 Rev. 1.1, 6-June-11
Page 2 of 8
www.power-one.com
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