MCD10133 Rev. 1.1, 6-June-11 Page 1 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Description
The SFD1200-12BG is a 1200-watt, DC-input front-end which has a main 12 VDC output for datacom, distributed
power, and server applications, and provides a 3.3 VDC standby output. 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 FETs facilitate use in hot-swap, redundant
configurations.
Status is provided with front panel LEDs, logic signals, and via an I2C management interface bus. In addition, the
I2C bus can supply status information ab out the power supply i ncluding output c urrent and voltage.
The SFD1200-12G meets international safety requirements for ITE and is CE marked to the Low Voltage Directive
(LVD).
Model Selection
Model
Nominal
Output
Voltage
(VDC)
Adjustment
Range (VDC)
Minimum Load
(A)
Maximum
Output Current
(Amps)
Regulation
%
Ripple &
Noise @
20 MHz
BW (mV)
SFD1200-12BG 12
3.35 (Standby) N/A
N/A 0.5
0 99.2
3 ±3
±3 100
100
Applications
• Datacom
• Distributed power syst ems
•
Servers
Features
• RoHS compliant for all six substance s
• Wide DC input range (-40 to -75 VDC)
• 1U or 2U height configurations
• Active current shar e with ORing FET on +12V
• I2C interface status and control
• Standby voltage of 3.3 VDC @ 3 A
• Overtemperat ure, overload, and overvoltage
protection
• Variable-speed fan for low noise at low ambient
temperatures
• Status LEDs: INPUT OK, OUTPUT OK, and
FAULT
MCD10133 Rev. 1.1, 6-June-11 Page 2 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Input Specifications
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
DC Input Volta ge Continuous input range. -40 -53 -75 VDC
Hold-up Time On all outputs. @ -53 VDC 5 ms
Input Current At full-rated load. @ -40 VDC 35 A
Inrush Surge Current Excluding Xcap. @ 25 ºC 35 A pk
Output Specifications
Parameter Conditions/Description Min. Nom. Max. Units
Efficiency
NOTE: Internal fan is
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 V DC and 50% to 75% load on
V1. 90 %
With Vin at -40 VDC and 75% to 100% load on
V1. 90 %
With Vin at -70 V D C and 50% to 75% load on
V1. 91 %
With Vin at -70 V D C and 75% to 100% load on
V1. 91 %
Minimum Load Minimum loading require d to maintain
regulation. 0.5 A
Output Power Input of -40 to -75 VDC: 1200 W
Overshoot Output voltag e ov ershoot at tur n-on. Overshoot
lasts <5 ms. < 5 %
Transient Res ponse Maximum recovery time to within 1% of initial
set point due to a 25% load change, 1A /µs.
12V output:
Standby output:
Maximum deviation: 12V out put:
Standby output:
5
5
3
3
ms
ms
%
%
Turn-On Dela y
with PS_ON signal Ti m e required for initial output voltage
stabilizati on after applic ation of DC input or
ON/OFF signal.
3000 ms
Output Regulation See Mod el S election d ata on page 1.
MCD10133 Rev. 1.1, 6-June-11 Page 3 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Interface Signals and Internal Protection1
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
Overvoltage Protection Latch-style overvoltage protection. 12V output:
Standby output: 15
4.3 V
Overcurrent P rotection Slow Current limit 12V output:
Overcurrent (Latching Mode). 12V output:
Standby output:
104
116
4
115
130
6
A
Short-Circuit
Protection Latching Mode.
Overtemperature/
Fan Failure W ar ning 12V output will shut down in the event of an
overtemperat ure condition or blocked fan rotor.
OT setpoint is 55 ±5 º C. Supply's fa n and Vaux
are active. Power supply will recover when OT
condition is removed. Amber OT LED will turn
ON to indicate fault condition.
PS_ON Output enable. Pulled low allows V1 to be ac tivated.
+12V Current S hare 0 to 8V sign al used for active current sharing.
Write Protect For factory use only.
PS A0 Sets I2C Address. Lo w = 0, Hi gh = 1 Signal has 4.75kohm pull up resi s tor to 3V
SDA I2C Data line (3.3V).
SCL I2C Clock line (3. 3V ).
Tach_1 Pulses per f an revolution; variable in t emperature function.
Input_OK/H High signal indicates DC i nput voltage is within PSU limits. S i gnal is open drain with an internal
1kohm pull up r esistor to 3.3Vdc
Present/L 100 Ohm resistor internally connec ted to RTN allowing the PS U to be detected on insertion.
PS_Kill Output enable. Pulled lo w in conjunction with PS_ON being pulled low allows V1 to be ac tivated.
Signal has int ernal 100kohm pul l-up resistor to 3V.
+12V Sense Connect to posit i v e side of load
+12V Rtn Sens e Connect to negat i v e side of load
Alert/L Low signal in dicates PSU f an is running below speed or an overtemperat ure limit was exceeded.
Signal is open drain with a 1k ohm pull-up resistor to 3.3V.
PWROK/H High signal in dicates both o utputs are withi n regulation l imits. Si gnal i s open drain with a 1kohm
pull-up resistor to 3.3V.
1 Refer to product specification for internal pull-up impedances and timing of these signals.
MCD10133 Rev. 1.1, 6-June-11 Page 4 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
I2C Bus Management Interface
Static Includes static information such as: part number and revision level, output rati ng, serial number ,
date code, and manufacturing location.
Status (Logic 1 or 0) DC Input OK.
DC Output OK.
Overtemperature.
Overcurrent.
Fan OK.
Overvoltage Alert
Undervoltage A lert
Real-Time Monitoring Output voltage (main output). LSB = 20 mV
Output current (main output) . LSB = 200 mA
Input voltage (VDC). LSB = 30 mV
Input current (IDC). LSB = 15 mA
Safety, Regu latory, and EMC Specifications
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
Agency Approvals UL 6095 0-1/CSA 60950-1 (cCSAus), EN 60950-1 (TÜV), CE Mark for LVD (pending).
Electromagnetic
Interference FCC CFR tit le 47 Part 15
Sub-Part B, Conducted:
EN 55022/CISPR 22. Radiated:
A
A
Class
Harmonics Per IEC 61000-3-2. N/A Class
Voltage Fluctuation
and Flicker Per IEC 61000-3-3. N/A
ESD Susceptibility Per EN 61000-4-2 8 . kV
Radiated
Susceptibility Per EN 61000-4-3 10 . V/m
EFT/Burst Per EN 61000-4-4 ±1 . kV
Input Transient
Protection Per EN 61000-4-5 Line-to-Line:
Line-to-Ground: 0.5
0.5 . kV
RF Conducted
Disturbances Per EN 61000-4-6, Level 2. 10 . V
Voltage Inter ruptions P er EN 61000-4-11, perf ormance criterion B 30%.
Per EN 61000-4-11, performanc e c riterion C 60%.
Per EN 61000-4-11, performanc e c riterion C 95%.
N/A . ms
ms
Sec
Leakage Current N/A mA
Magnetic field EN61000-4-8 30 A/m
MCD10133 Rev. 1.1, 6-June-11 Page 5 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Environmental Specifications
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
Altitude Operating.
4000
m
Operating
Temperature Internal D C fan for coolin g. At 100% load: 0 50
ºC
Storage Temper ature -40 70 ºC
Temperature
Coefficient 0 ºC to 45 ºC (after 15-minute warm-up). 0.02 %/ºC
Relative Humidity Non-condensing.@ 40 °C 5 93 %RH
Shock Operating: half-sine, 11 ms, 10 shock per face,
6 faces
Non-Operatin g: half-sine, 11 ms, 10 shock per
face, 6 faces
7
30
G
G
Vibration Operating: 3 axis swept sin e 5-500 Hz,
1 octave/min, 5 sweep cycles per axis
Non-operating: random 10-500 Hz.
1
3.5
G
Grms
Reliability
Parameter
Conditions/Description
Min.
Nom.
Max.
Units
MTBF ( C alculated) Bell c ore Ground Benign @ 25 °C.
250 000
hrs
LED Indicators
Indicator LED Color
Power Good GREEN
DC OK GREEN
FAIL AMBER
MCD10133 Rev. 1.1, 6-June-11 Page 6 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Mechanical Drawings: (Drawing dimensions a re shown in mm)
Weight: 1.37 kg
Overall Dimensions:
FRONT VIEW
REAR VIEW
MCD10133 Rev. 1.1, 6-June-11 Page 7 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
SIDE VIEW
TOP VIEW
Connector Information
Power Supply:
Input – DP5ZJW0300-001
MCD10133 Rev. 1.1, 6-June-11 Page 8 of 8 www.power-one.com
SFD1200-12BG Front-End Preliminary Data Sheet
DC Input, 12V Output, 1200 Watts
Output - P/ N FCI 51721-10002406AA or equival ent
Mating Connections:
Input – DP5TJY0300-001
Output - P/ N: FCI 51741-10002406CC
NUCLEAR AND MEDICAL APPLICATIONS - Power-One products are not designed, intended for use in, or authorized for use as critical
components in life support s ystems, equipment used i n hazardous environments, or nuclear control systems without the express written consent
of the respective divisional president of Power-One, Inc.
TECHNICAL REVISIONS - The a ppearance of products , including safety agency certi fications pictured on labels, ma y change depending on th e
date manufactured. Specifications are subject to change without notice.
NOTES: UNLESS OTHERWISE SPECIFIED
