D1U3CS-W-850-12-HxxC Series
81mm 1U Front End AC-DC Power Supply Converter
www.murata-ps.com
PRODUCT OVERVIEW
The D1U3CS-W-850-12-HxxC series are 80 PLUS Gold efficiency 850 watt, power factor corrected front
end supplies with a 12V main output and a 3.3V (20W) standby. They have active current sharing and up to
4 supplies may be operated in parallel. The supplies may be hot plugged, they recover from overtempera-
ture faults, and have logic and PMBus status signals. Their low profile 1U package and >15W/cubic inch
power density make them ideal for delivering reliable, efficient power to servers, workstations, storage
systems and other 12V distributed power systems.
ORDERING GUIDE
Main
Output
FEATURES
Part Number
Power Output
850W
Standby Output1
3.3V
Airflow
850W output power
®
D1U3CS-W-850-12-HC4C
D1U3CS-W-850-12-HC3C
Back to front
Front to back
80 PLUS Gold efficiency
12V
12V main output
INPUT CHARACTERISTICS
Parameter
Voltage Operating Range
Frequency
Turn-on Voltage
Turn-off Voltage
Maximum Current
Inrush Current
Power Factor
3.3V or 5V standby output of 20W
1U height: 3.20" x 11.00" x 1.57"
15.4 Watts per cubic inch density
Conditions
Min.
90
47
Nom.
115/230
50/60
Max. Units
264
63
Vac
Hz
Ramp up
Ramp down
850W, 100Vac
90
N+1 redundancy capable,
Vac
73
including hot plugging (up to 4 in parallel)
10
25
Arms
Apk
Active current sharing on 12V main output;
ORing FET
Cold start between 0 to 200msec
At 230Vac, full load
20% load
0.98
89
93.5
93
88
92
88
Overvoltage, overcurrent,
overtemperature protection
Efficiency (230Vac) excluding fan
load
50% load
100% load
%
Internal cooling fan (variable speed)
PMBus™ / I²C interface
RoHS compliant
OUTPUT VOLTAGE CHARACTERISTICS
Output
Voltage
Parameter
Conditions
50% load
Min.
Typ.
Max.
Units
Voltage Set Point Accuracy
Line and Load Regulation
11.97
11.4
12.0
12.02
12.6
120
69.2
10000
3.32
3.46
50
Vdc
12V
Ripple Voltage & Noise2
Output Current
20MHz Bandwidth
mV p-p
A
μF
0
Load Capacitance
Voltage Set Point Accuracy
Line and Load Regulation
Ripple Voltage & Noise2
Output Current
50% load
3.28
3.13
3.3
Vdc
3.3VSB
20MHz Bandwidth
mV p-p
A
0
6
Load Capacitance
For 5vSB, contact Murata Sales for availablity.
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.
350
μF
1
2
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
www.murata-ps.com/en/3d/acdc.html
Available now at
www.murata-ps.com/en/3d/acdc.html
CB
Test Certificate
and Test Report
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
D1U3CS-W-850-12-HxxC.A03 Page 1 of 6