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D1U2-W-400-12-HA4C
54mm 1U Front End AC-DC Power Supply Converter
PRODUCT OVERVIEW
The D1U2-W-400-12-HA4C is a 400 watt, power factor corrected front end supply with a 12V main output and a 5V
(15W) standby. It features active current sharing and up to 4 supplies maybe operated in parallel. The supply may be hot
plugged, it recovers from overtemperature faults, and has status LEDs on the front panel in addition to logic and PSMI
status signals. The supply comes in a low pro?le 1U package and has >8W/cubic inch power density, making it ideal for
delivering reliable, ef?cient power to servers, workstations, storage systems and other 12V distributed power systems.
ORDERING GUIDE
FEATURES
400W output power
Part Number
D1U2-W-400-12-HA4C
Power Output
High Line AC
400W
Power Output
Low Line AC
400W
Main
Output
12V
Standby
Output
5V
Air?ow
Back to front
12V main output
5V standby output of 15W
1U height: 2.15"x13.67"x1.58"
8.6 Watts per cubic inch density
Ef?ciency 85% at full load, 100Vac and 50°C
N+1 redundancy capable,
including hot plugging (up to 4 in parallel)
INPUT CHARACTERISTICS
Parameter
Voltage Operating Range
Frequency
Turn-on Voltage
Turn-off Voltage
Maximum current at Vin=100Vac
Inrush Current
Power Factor
Conditions
Ramp up
Ramp down
400W
Cold start between 0 to 200msec
At 230Vac, full load
Min.
90
47
85
Nom.
115/230
50/60
0.99
Max.
264
63
85
5
30
Units
Vac
Hz
Vac
Arms
Apk
Active current sharing on 12V main output,
35% load
80
ORing FET
Overvoltage, overcurrent,
Ef?ciency (100Vac) including fan load
50% load
100% load
85
85
%
overtemperature protection
OUTPUT VOLTAGE CHARACTERISTICS
Internal cooling fan (variable speed)
PSMI and SMbus / I2C interface with bicolor
LED status indicators
RoHS compliant
Output
Voltage
12V
Parameter
Voltage Set Point
Line and Load Regulation
Ripple Voltage & Noise 1
Conditions
20MHz Bandwidth
Min.
11.8
Typ.
12.0
Max.
12.2
120
Units
Vdc
mV p-p
Output Current (230Vac)
Load Capacitance
0
0
33.3
15,000
A
μF
Voltage Set Point
Line and Load Regulation
4.85
5.0
5.15
Vdc
5VSB
Ripple Voltage & Noise 1
Output Current
Load Capacitance
20MHz Bandwidth
0
0
50
3
500
mV p-p
A
μF
1
Ripple and noise are measured with 0.1 μF of ceramic capacitance and 10 μF of tantalum capacitance on each of the
power supply outputs. A short coaxial cable with 50Ω scope termination is used.
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Available now at
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Test Certi ? cate
CB
and Test Report
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
D1U2-W-400-12-HA4C.A04 Page 1 of 6
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