SFP650-12BG AC-DC Front-End Data Sheet
12V Output, 650 Watts
Features
Ideal server form factor optimizes, space,
efficiency, and load variations
High efficiency maximized between
30-80% load conditions
Unconditionally stable under any load
condition
Wide range DC-input model available
(SFD550-12BG)
Wide input voltage range (90-264 VAC)
with PFC
1U or 2U height configurations
Active current share with ORing FET
I
2
C interface status monitoring
Standby voltage of 3.3 VDC @ 3 A
Overtemperature, overload, and
overvoltage protection
Status LEDs: AC OK, POWER GOOD,
PS FAIL
Applications
Datacom
Distributed power systems
Description
The SFP650-12BG is a 650-watt, power factor corrected (PFC) front-end which provides a 12 VDC output for
datacom and other distributed power applications. Its compact size enables mounting in both 1U and 2U height
racks. High efficiencies, advanced thermal management techniques, and an internal fan increase reliability over a
broad range of operating conditions. Internal ORing diodes facilitate use in hot-swap (plug)
1
, redundant
configurations.
Status is provided with front panel LEDs, logic signals, and via the I
2
C management interface bus.
The SFP650-12BG meets international safety requirements and is CE marked to the Low Voltage Directive (LVD).
Model Selection
Model
Nominal
Output Voltage
(VDC)
12
3.3 (Standby)
Adjustment
Range (VDC)
Maximum
Output Current
(Amps)
53.3
3
Regulation
%
±3
±3
Ripple &
Noise @
20 MHz BW
(mV)
100
100
SFP650-12BG
N/A
N/A
Proper hot-swap (plug) operation instruction: Power supply is not intended to be inserted into the system with AC
cord already applied. Alternatively, if there is an application where power supply insertion with AC cord is required;
PS_ON must be toggled or AC recycled after insertion into the system to reset the power supply.
1
BCD20033-G Rev.AB 31-Mar-09
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