MVAC250 Datasheet, PDF (1/7 Pages) Murata Manufacturing Co., Ltd. – 250W High Density AC/DC Power Supply

www.murata-ps.com
FEATURES
Medical and ITE safety approved
250W compact high density
_{3" x 5" standard footprint}
High efficiency up to 94%
Remote sense
Power On, Power OK (MVAC250-xxAFD)
Universal AC input with active PFC
Less than 1U high – 1.4"
Convection cooled operation up to 170W
Isolated 12V@1A fan output
Isolated 5V@2A standby output with current
share model MVAC250-xxAFD
RoHS compliant
Active inrush protection
Current sharing option
DESCRIPTION
The MVAC250 series switching power supplies
utilize advanced component and circuit
technologies to deliver high efficiency. Designed
for Medical, Telecom and Industrial applications
to satisfy 1U height design considerations, the
MVAC250 Series measures only 3.0" x 5.0"
x 1.40". All models offer universal AC input
with active power factor correction (PFC) and
compliance to worldwide safety and EMC
standards.
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MVAC250 Series
250W High Density AC/DC Power Supply
ORDERING GUIDE
Model Number* Natural Convection Cooling Forced Air Cooling
MVAC250-12F
MVAC250-24F
170W
250W @ 250LFM
MVAC250-48F
MVAC250-xxAFD These models also include aux output (V3)
* Refer to page 2 for current sharing model numbers MVAC250-xxAFD
Main Fan Output Aux Output
Output (V1) (V2)
(V3)
12V
12V
24V
12V
50V
12V
5V
INPUT CHARACTERISTICS
Parameter
Input Voltage Operating Range*
Input Frequency
Turn-on Input Voltage
Turn-off Input Voltage
Input Current
Inrush Current
Power Factor
Conditions
Min. Typ.
Single phase
90 115/230
47 50/60
Input rising
80
Input falling
70
90Vac input, full load
At 264Vac, at 25°C cold start
15
At 230Vac, full load
0.96
* DC Input 127-300Vdc optionally available; contact your Murata salesperson.
OUTPUT CHARACTERISTICS
Model Number
Main Output
Voltage (V1)
Load Current
MVAC250-12F
12V
0.4 to 20.8A
MVAC250-24F
24V
0.2 to 10.4A
MVAC250-48F
50V
0.1 to 5.0A
MVAC250-12AFD 12V @ 10.4A⁶ 0 to 20.8A
MVAC250-24AFD 24V @ 5.2A⁶ 0 to 10.4A
MVAC250-48AFD 50V @ 2.5A⁶ 0 to 5.0A
Maximum Load
Capacitance
0 to 1500uF
0 to 300uF
0 to 100uF
0 to 1500uF
0 to 300uF
0 to 100uF
Line, Load, Cross
Regulation
+/- 1%
+/- 1%
+/- 1%
+/- 1%⁶
+/- 1%⁶
+/- 1%⁶
Max. Units
264
Vac
63
Hz
90
80
Vac
3.2
A
Apk
Typical Efficiency
@230Vac
93%
93%
94%
93%
93%
94%
Main Output Characteristics (all models)
Parameter
Conditions
Transient Response
50% load step, 1A/µsec slew rate
Settling Time to 1% of Nominal
Turn On Delay
After application of input power
Output Voltage Rise
Monotonic⁵
Output Holdup
120Vac/60Hz, full load
Temperature Coefficient
Ripple Voltage & Noise¹
Remote Sense
Compensates for up to 0.5V of lead drop with
remote sense connected. Protected against
short circuit and reverse connection.
Typ. Max. Units
±5
%
500
µsec
3
sec
20
50
msec
0.02 %/°C
1
%
500
mV
Auxilliary Output Characteristics (varies by model)
Auxilliary Output
Aux Output
Voltage
Load Current
Load Capacitance
Line, Load, Cross Ripple Voltage
Regulation³
& Noise¹
Fan (V2) all models
12V
0 to 1A
0 to 220µF
± 10%
2%
Aux (V3) – MVAC250-xxAFD
5V
0 to 2A
0 to 220µF
± 5%
1%
1. Noise and ripple is measured at an oscilloscope jack on the output, 20MHz bandwidth, and with 0.1µF ceramic and 10µF aluminum
electrolytic capacitors across the output pins.
2. Unless otherwise specified all measurements are taken at 120Vac input and 25°C ambient temperature.
3. Fan (V2) regulation band applies from 0.1A to 1A load with a minimum of 10W load on the main (V1) output.
4. Fan (V2) has overvoltage protection (tracking V1) and short circuit protection. Overloading the Fan (V2) output can result in perma-
nent damage to the unit.
5. 24V and 50V models may exhibit up to 5% turn on overshoot for loads less than 4% of full load.
6. See current sharing option section for droop characteristics.
CB
Test Certificate
and Test Report
PENDING
MVAC250.A01.D26 Page 1 of 7