CEF400-112C Datasheet, PDF (1/3 Pages) Murata Manufacturing Co., Ltd. – 400 Watt Open Frame Single Output AC/DC Switching Power Supply

FEATURES
n _{400W continuous output power}
n IEC EN61000-3-2 compliance
n Remote sense compensation
n AC Power Fail signal
n DC Power Good signal
n Remote Inhibit control
n Droop current share
n I²C interface
n 5V Standby
n Low profile (1U)
n Integrated cooling fan
n Over-voltage protection
n Over-current protection
n Thermal overload protection
n Built-in OR-ing FET
DESCRIPTION
The CEF400-112C is a 400W active power-
factor-corrected (PFC) front-end power supply
for distributed power architecture (DPA) systems
requiring high power density in a 1U low profile
package. The built-in OR-ing FET allows the
power supply to operate in active current
sharing mode for redundant (N+1) operation.
Additional features include I²C interface, built-in
fan and a 5V standby auxiliary output. The
CEF400-112 provides reliable 12V bulk power
for Information Technology Equipment and
Industrial Applications.
Ḥ
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
PRODUCT SPECIFICATIONS
INPUT CHARACTERISTICS
Parameter
Input Voltage Operating Range (AC)
Input Frequency
Turn-on Input Voltage
Turn-off Input Voltage
Maximum Input Current
Inrush Current
Power Factor
Leakage Current
CEF400-112C
400 Watt Open Frame Single Output
AC/DC Switching Power Supply
Conditions
Min.
Typ.
85
47
Ramp up
76
Ramp down
63
1.75
IEC EN61000-3-2 compliant
264 Vac input
Max.
264
63
85
78
6.5
20
0.90
Units
Vac
Hz
Vac
Arms
Apk
mA
OUTPUT CHARACTERISTICS
Output
Voltage
Parameter
Voltage Set Point Accuracy
Line and Load Regulation
12V
Ripple Voltage & Noise➀
Rated Output Current
Voltage Set Point Accuracy
Line and Load Regulation
5Vsb
Ripple Voltage & Noise➀
Rated Output Current
Conditions
17A load
20MHz Bandwidth
20MHz Bandwidth
Min.
12.08
11.75
33.3
4.85
4.85
1.3
Typ.
12.125
5
Max.
12.16
12.45
175
5.15
5.15
50
Units
VDC
mV p-p
A
VDC
mV p-p
A
GENERAL
Parameter
Remote Sense
Conditions
Sum of +ve & -ve drops
Min.
Typ.
Max. Units
500
mV
Efficiency
Full load, high line
83
%
Turn on Delay
2
s
Transient Response
12V Ramp 1A/μs 33% step
5Vsb Ramp 1A/μs 33% step
±375
mV
±40
Current Sharing Accuracy
200-720W load
2 in parallel
45/55
%
Hold-up Time, to 10.8V
400W, 120Vac line
20
ms
Output to Chassis-Basic
500
Isolation
Vrms
Input to Chassis-Basic
1500
Temperature Coefficient
Full load and 100Vac input
0.02 % / °C
➀ 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. The output noise requirements apply over a 0 Hz to 20 MHz bandwidth. A short coaxial cable
with 50Ω scope termination is used.
PROTECTION CHARACTERISTICS
Parameter
Output Voltage Conditions
Min.
Typ.
Max.
Units
Over Voltage
Latching
14.065
14.5
14.935
V
Over Current
Short Circuit
Over Voltage
Over Current
Auto-restart
36
38
42
A
12V
The 12V output shall current limit and shutdown during a shorted
output condition, and shall automatically restart after the short is
removed.
Latching
5.6
6
V
5Vsb
Auto-restart
1.4
2.1
2.65
A
Over-temperature
Unit
Auto-restart
Unit shall self-protect against excessive internal
temperatures and automatically recover.
Input Undervoltage
No damage will be sustained by operation at voltages below the specified input
operating voltage range.
Technical enquiries email: [e-mail], tel: [phone]
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