FEB 21, 2007 Page 1 of 9 www.power-one.com
SFP650-12BG AC-DC Front-End Data Sheet
12V Output, 650 Watts
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, redundant configurations.
Status is provided with front panel LEDs, logic signals, and via the I
2
C management interface bus. In addition, the
I
2
C bus can enable the power supply and control fan speed.
The SFP650-12BG meets international safety requirements and is CE marked to the Low Voltage Directive (LVD).
Model Selection
Model
Nominal
Output Voltage
(VDC)
Adjustment
Range (VDC)
Maximum
Output Current
(Amps)
Regulation
%
Ripple &
Noise @
20 MHz BW
(mV)
SFP650-12BG
12
3.3 (Standby)
N/A
N/A
53.3
3
±3
±3
100
100
Applications
• Datacom
• Distributed power systems
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
• NEBS level 3 compliance
(GR-63, -78, -1089)
• 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 and control
• Standby voltage of 3.3 VDC @ 3 A
• Overtemperature, overload, and overvoltage
protection
• Status LEDs: AC OK, DC OK, and
Overtemperature
