D1U4-W-1200-12-Hx Series
AC/DC Front End Power Supply
PRODUCT OVERVIEW
The D1U4-W-1200 is a 1200 Watt, power-factor-corrected (PFC) front-end power supply for hot-
swapping redundant systems. The main output is 12V and standby output of either 5V or 3.3V. Packaged
in 1U low profile, 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 auto-recover from over-current and over-temperature faults. Status
information is provided with front panel LEDs, logic signals and I
2
C management interface. Three units
can be packaged into an optional 19” 1U power shelf to provide up to 3.6kW of power.
FEATURES
RoHS compliant
1200W (220Vac), 900W (110Vac)
Output power
12V Main output,
3.3V or 5V standby output
1U sized; dimensions 14.0” x 4.0” x 1.6”
13.4 Watts per cubic inch density
N+1 redundancy capable,
including hot-docking
Active current sharing on main output
Over-voltage, over-current,
over-temperature protection
Internal cooling fans
I²C Bus Interface with status indicators
Optional 1U x 19” power-shelf
SELECTION GUIDE
Part Number
D1U4-W-1200-12-HC2C
D1U4-W-1200-12-HA2C
D1U4-W-1200-12-HC1C
D1U4-W-1200-12-HA1C
Power Output
High Line AC
1200W
1200W
1200W
1200W
Power Output
Low Line AC
900W
900W
900W
900W
Main Output
12V
12V
12V
12V
Standby
Output
3.3V
5V
3.3V
5V
Airflow
Back to front
Back to front
Front to back
Front to back
INPUT CHARACTERISTICS
Parameter
Input Voltage Operating Range
Input Frequency
Turn-on Input Voltage
Turn-off Input Voltage
Maximum Input Current
Inrush Current
Power Factor
Conditions
Low Line AC
High Line AC
Ramp up
Ramp down
Low Line AC 90Vac
High Line AC 180Vac
Cold start between 0-1msec
Output load >90%
Output load >50%
Min.
90
180
47
78.5
70.5
Typ.
Max.
140
264
63
86.5
78
15
10
100
Units
Vac
Hz
Vac
Arms
Apk
50/60
95%
75%
OUTPUT VOLTAGE CHARACTERISTICS
Output
Voltage
Parameter
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise
1
Output Current
Load Capacitance
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise
1
Operating Range
Load Capacitance
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise
1
Operating Range
Load Capacitance
Conditions
Min.
11.75
Typ.
12.12
Max.
12.48
120
98.3
40000
Units
Vdc
mV p-p
A
μF
Vdc
mV p-p
A
μF
Vdc
mV p-p
A
μF
12V
20MHz Bandwidth
0
3.3
3.2
20MHz Bandwidth
0
5
4.85
20MHz Bandwidth
0
3.3Vsb
3.4
33
6
1530
5.15
50
4
1530
5Vsb
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. The output noise requirements apply over a 0 Hz to 20 MHz bandwidth. A short coaxial
cable with 50ohm scope termination is used. See Ripple Test Setup diagram.
1
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
Technical enquiries
email: toronto@murata-ps.com, tel:
+1 (866) 740 1232
D1U4-1200-12-Hx.A03
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MURATA-PS [ MURATA POWER SOLUTIONS INC. ]
