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D1U4-W-1200-12-Hx Series
www.murata-ps.com
AC/DC Front End Power Supply
PRODUCT OVERVIEW
The D1U4-W-1200-12-Hx is a 1200 Watt, power-factor-corrected (PFC) front-end power supply for hot-swapping
redundant systems. The main output is 12V with a standby output of either 5V or 3.3V. Packaged in a 1U low-profile
enclosure, it is designed to deliver reliable bulk power to servers, workstations, storage systems or any 12V distributed
power architecture systems requiring high power density. The highly efficient electrical and thermal design with
internal cooling fans supports reliable operation conditions. The D1U4-W-1200 is designed to autorecover from
overcurrent and overtemperature faults. Status information is provided with front panel LEDs, logic signals and I2C
management interface. Four units can be packaged into an optional 19" 1U power shelf to provide up to 4.8kW of
power.
ORDERING GUIDE
FEATURES

1200W (220Vac), 900W (110Vac)
Output power

12V Main output,
3.3V or 5V standby output of 20W

1U height: 4.0" x 14.0" x 1.6"

13.4 Watts per cubic inch density

N+1 redundancy capable,
including hot-docking

Active current sharing on main output

Overvoltage, overcurrent,
overtemperature protection

Internal cooling fans

I²C Bus Interface with status indicators

Optional 1U x 19" power-shelf

RoHS compliant
Part Number
Power Output
High Line AC
Power Output
Low Line AC
Main Output
Standby
Output
Airflow
1200W
1200W
1200W
1200W
900W
900W
900W
900W
12V
12V
12V
12V
3.3V
5V
3.3V
5V
Back to front
Back to front
Front to back
Front to back
D1U4-W-1200-12-HC2C
D1U4-W-1200-12-HA2C
D1U4-W-1200-12-HC1C
D1U4-W-1200-12-HA1C
INPUT CHARACTERISTICS
Parameter
Conditions
Input Voltage Operating Range
Input Frequency
Turn-on Input Voltage
Turn-off Input Voltage
Maximum Input Current
Inrush Current
Power Factor
Ramp up
Ramp down
Low Line AC 90Vac
High Line AC 180Vac
Cold start between 0-1msec
Output load >90%
Output load >50%
Min.
Typ.
Max.
Units
90
47
78.5
70.5
115/230
50/60
264
63
86.5
78
15
10
100
Vac
Hz
Vac
Arms
Apk
95%
75%
OUTPUT VOLTAGE CHARACTERISTICS
Output
Voltage
12V
3.3Vsb
5Vsb
Parameter
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise1
Output Current
Load Capacitance
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise1
Operating Range
Load Capacitance
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise1
Operating Range
Load Capacitance
Conditions
Min.
Typ.
Max.
12.12
11.75
12.48
120
98.3
40000
20MHz Bandwidth
0
3.3
3.2
3.4
33
6
1530
20MHz Bandwidth
0
5
4.85
20MHz Bandwidth
0
5.15
50
4
1530
Units
Vdc
mV p-p
A
μF
Vdc
mV p-p
A
μF
Vdc
mV p-p
A
μF
1
Ripple and noise are measured with 0.1 uF of ceramic capacitance and 2 x 270 uF of OSCON capacitance on each
of the power supply outputs. A short coaxial cable with 50ohm scope termination is used. See Ripple Test Setup
diagram.
For full details go to
www.murata-ps.com/rohs
CB
Test Certificate
and Test Report
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D1U4-W-1200-12-Hx.A09 Page 1 of 5
D1U4-W-1200-12-Hx Series
AC/DC Front End Power Supply
OUTPUT CHARACTERISTICS
Parameter
Conditions
Remote Sense
Efficiency
Output Rise Monotonicity
120
220Vac
90.6
Overshoot less than 10% for all outputs, no voltage negative between 10% to 95% during ramp up
AC ramp up
1.5
PS_On activated
150
12V Ramp 1A/μs, 50% load step
±600
3.3Vsb Ramp 1A/μs, 50% load step
±165
5Vsb Ramp 1A/μs, 50% load step
±250
Startup Time
Transient Response
Current sharing accuracy (up to 6 in parallel)
At 100% load
Hot Swap Transients
Holdup Time
All outputs remain in regulation
Max. load, nominal Vin
Min.
Typ.
Max.
±10
20
Units
mV
%
s
ms
mV
%
ms
ENVIRONMENTAL CHARACTERISTICS
Parameter
Conditions
Min.
Storage Temperature Range
Operating Temperature Range
Operating Humidity
Storage Humidity
Shock
Sinusoidal Vibration
Non-condensing
-40
0
10
5
MTBF
Acoustic
Non-condensing
30G non operating
0.5G, 5 – 500 Hz operating
Calculated per Bellcore at Ta=30°C
Demonstrated
ISO 7779-1999
Typ.
Max.
70
50
90
90
200K
200K
Safety Approvals
CAN/CSA C22.2 No. 60950-1-07, 2nd Ed.
UL 60950-1, 2nd Ed.
IEC 60950-1:2005 (2nd Edition); EN 60950-1:2006 +A11
Input Fuse
Power Supply has internal 20A/250V fast blow fuse on the AC line input
Switching Frequency
90KHz for Boost PFC Converter
165KHz for Main Output Converter
200KHz for Standby Output Converter
Weight
4.63lbs (2.1kg)
Units
°C
%
60
hrs
hrs
dB LpAm
Max.
Units
65
14
122
4.02
8
6
7
°C
V
A
V
A
V
A
Max.
Units
PROTECTION CHARACTERISTICS
Output
Voltage
12V
3.3Vsb
5Vsb
Parameter
Conditions
Min.
Overtemperature
Overvoltage
Overcurrent
Overvoltage
Overcurrent
Overvoltage
Overcurrent
Autorestart
Latching
Latching
Latching
Latching
Latching
Latching
55
13
107
3.57
6.5
5.6
5
Conditions
Min.
Typ.
ISOLATION CHARACTERISTICS
Parameter
Insulation Safety Rating / Test Voltage
Isolation
Grounding
Typ.
Input to Output - Reinforced
3000
Vrms
Input to Chassis - Basic
1500
Vrms
Output to Chassis
Output to Output
Main Output Return and Standby Output Return are connected internally. 100kΩ resistor parallel with 100nF
capacitor is connected between Return and power supply chassis. Main Output Return should be connected to
the System Chassis.
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D1U4-W-1200-12-Hx.A09 Page 2 of 5
D1U4-W-1200-12-Hx Series
AC/DC Front End Power Supply
STATUS INDICATORS AND CONTROL SIGNALS
Status
Conditions
Description
LED
Off
Flashing Yellow
Flashing Green
Green
No AC input to all PS
Power Supply Failure
Main Output Absent
Power Supply Good
Status
PS-ON, PGOOD, ACOK, PS_BAD, FANFAIL, OT Warning &
shutdown, AC Range
Output Fault
12V Output
12V
Fan1 Monitor
Fan2 Monitor
12V OV, 12V UV, 12V OC, Vsb Fail, Fan1 Fail, Fan2 Fail
8 bit scaled output voltage
8 bit scaled output current
8 bit scaled output current
8 bit scaled output current
I2C Registers
EMISSIONS AND IMMUNITY
Characteristic
Standard
Compliance
Input Current Harmonics
Voltage Fluctuation and Flicker
Conducted Emissions
Radiated Emissions
IEC/EN 61000-3-2
IEC/EN 61000-3-3
FCC 47 CFR Part 15/CISPR 22/EN55022
FCC 47 CFR Part 15/CISPR 22/EN55022
ESD Immunity
IEC/EN 61000-4-2
Radiated Field Immunity
Electrical Fast Transients/Burst Immunity
Surge Immunity
RF Conducted Immunity
Magnetic Field Immunity
Voltage dips, interruptions
IEC/EN 61000-4-3
IEC/EN 61000-4-4
IEC/EN 61000-4-5
IEC/EN 61000-4-6
IEC/EN 61000-4-8
IEC/EN 61000-4-11
Complies
Complies
Class A, 6dB margin
Class A, 6dB margin
4kV contact discharge
8kV operational air discharge
15kV non-operational air discharge
Complies
Complies
1kV/2kV, Performance Criteria A
3 Vac, 80% AM, 1kHz, Performance Criteria A
3 A/m
Complies
RIPPLE TEST SETUP
2x270uF OSCON
Power Supply
0.1uF Ceramic
Load Box
AC Phase
AC Ground
BNC to BNC Shielded Cable
General Notes:
1. Load the outputs at specified minimum
output current.
2. Connect the probe as shown with the
input tip and ground as short as possible.
Oscilloscope
20MHz BW
3. Take all measurements
4. Repeat the measurements with the
outputs at specified maximum output
current.
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D1U4-W-1200-12-Hx.A09 Page 3 of 5
D1U4-W-1200-12-Hx Series
AC/DC Front End Power Supply
OUTPUT CONNECTOR AND SIGNAL SPECIFICATION
DC and Signal Connector: Tyco Part # 1-6450132-2, or FCI PowerBlade # 51732-021
P1
VOUT
P2
VOUT
P3
VRTN
P4
VRTN
P5
P6
VRTN
VRTN
P7
VOUT
P8
x1
x2
x3
x4
x5
x6
AC_OK
P_GOOD
V_SB
RETURN
V_SB
RETURN
V_SB
+OUT
V_SB
+OUT
D
SPARE
SPARE
V_SB
RETURN
V_SB
RETURN
V_SB
+OUT
V_SB
+OUT
C
I_SHARE
I2C ADR0
I2C ADR1
I2C ADR2
PS_KILL
PS_
PRESENT
B
SENSE +
SENSE -
I2C DATA
I2C
CLOCK
SPARE
PS_ON
A
VOUT
mate-last pins
High Level
Low Level
Pin Assignment
Signal Name
Description
P1, P2, P7, P8
P3, P4, P5, P6
VOUT
VRTN
A1
Sense +
A2
Sense -
C5, C6, D5, D6
C3, C4, D3, D4
B1
V_SB
V_SB Return
I_Share
Main output voltage
Main output voltage, return
VOUT remote sense, positive node input, connected to the
+ve load point
VOUT remote sense, negative node input, connected to the
-ve load point
Standby voltage output
Standby voltage, return, tied internally to Output Return
Active load sharing bus
0 – 8V
-4 mA / +5 mA
>2.4V (active, OK)
<0.4V
+4 mA
-2 mA
>2.4V (active, Good)
<0.4V
+4 mA
-2 mA
>2.1V (open, or Vsb)
<0.7V (active, PS:On)
N/A
D1
AC_OK
Input AC Voltage “OK” signal output (Internal pull up is
10kΩ to Vsb)
D2
P_Good
Power good signal output (Internal pull up is 10kΩ to Vsb)
B5
PS_Kill
B6
PS_Present
Floating pin will turn off P/S (shorter pin, last-make and
first-break contact for hot plugging). This signal overrides
PS-On in disabling the Main Output
Internally tied to Vsb return
A6
PS_On
Internal 1K ohm pull-up to Vsb, (accepts open collector/
drain drive), This signal to be pulled low to turn-on power
supply
A3
A4
I2C Data
I2C Clock
I2C serial data bus
I2C serial clock bus
B2
I2C Adr0
Address input 0, internal pull-up to Vsb
B3
I2C Adr1
Address input 1, internal pull-up to Vsb
B4
I2C Adr2
Address input 2, internal pull-up to Vsb
I Max
0V
>2.1V (open, or Vsb)
<0.7V (active, PS:On)
Vsb
Vsb
>2.1V, < Vsb
<0.8V
>2.1V, <Vsb
<0.8V
>2.1V, <Vsb
<0.8V
-4 mA
-1 mA
±1 mA
±1 mA
±1 mA
D1U MATING CONNECTORS
2
Solder 2
Press Fit
12V D1U mating connector
Straight
Right Angle
Straight
Right Angle
MPS
N/A
N/A
N/A
36-0430032-0
FCI
51742-10802400CALF
51762-10802400CBLF
51742-10802400AALF
51762-10802400ABLF
Tyco
TBD
TBD
TBD
TBD
Solder connector recommended for board thickness of <0.090
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D1U4-W-1200-12-Hx.A09 Page 4 of 5
D1U4-W-1200-12-Hx Series
AC/DC Front End Power Supply
MECHANICAL DIMENSIONS - D1U4-W-1200-12-Hx
14.0 ± 0.025
( 355.60 ±0.65 )
0.350
(8.89)
REF
4.0 ± 0.025
(101.60± 0.65)
0.381 2.90
(9.68) (73.66)
14.113 ±0.025
(358.48 ±0.65 )
0.094 ±0.009
(2.40 ±0.25)
0.497
(12.63)
Airflow Back to Front
1.614 ±0.015
( 41.00 ±0.40 )
AC Input Connector: The AC input connector is standard IEC320 C14 (15A).
Dimensions: 4.00" x 14.00"x 1.61" [101.6mm x 355.6mm x 40.64mm]
OPTIONAL ACCESSORIES
Description
Part Number
12V D1U-12 output connector card
D1U-12-CONC
APPLICATION NOTES
Document Number
Description
Link
ACAN-27
D1U-12-CONC Output Connector Card
www.murata-ps.com/data/apnotes/acan-27.pdf
ACAN-31
D1U4 Communications Protocol
www.murata-ps.com/data/apnotes/acan-31.pdf
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating requirements
and the Life and Safety Critical Application Sales Policy:
Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other
technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply
the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without
notice.
© 2012 Murata Power Solutions, Inc.
www.murata-ps.com/support
D1U4-W-1200-12-Hx.A09 Page 5 of 5