MVAC250 Series

250W High Density AC-DC Power Supply

MVAC250.A03 Page 1 of 8

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FEATURES

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MVAC250-xxAFx

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DESCRIPTION

The MVAC250 series switching power supplies

utilize advanced component and circuit

technologies to deliver high efficiency. Designed

for medical, computing, communications, telecom

and other OEM 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.

ORDERING GUIDE

Model Number

Natural Convection Cooling

Forced Air Cooling

Main Output

(V1)

Fan Output

(V2)

Aux Output

(V3)

MVAC250-12F

170W

250W @ 250LFM

12V

12V

MVAC250-24F

24V

12V

MVAC250-48F

50V

12V

MVAC250-12AF

12V

12V

5V

MVAC250-12AFD*

12V

12V

5V

MVAC250-24AFD*

24V

12V

5V

MVAC250-48AFD*

50V

12V

5V

* Refer to page 2 for current sharing model number MVAC250-xxAFD notes.

INPUT CHARACTERISTICS

Parameter

Conditions

Min.

Typ.

Max.

Units

Input Voltage Operating Range*

Single phase

90

115/230

264

Vac

Input Frequency

47

50/60

63

Hz

Turn-on Input Voltage

Input rising

80

90

Vac

Turn-off Input Voltage

Input falling

70

80

Input Current

90Vac input, full load all outputs

3.4

A

1.5

2.0

W

Inrush Current

At 264Vac, at 25°C cold start

15

Apk

Power Factor

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

Maximum Load

Capacitance

Line, Load, Cross

Regulation

Typical Efficiency

@230Vac

MVAC250-12F

12V

0.4 to 20.8A

0 to 1500µF

± 1%

93%

MVAC250-24F

24V

0.2 to 10.4A

0 to 300µF

± 1%

93%

MVAC250-48F

50V

0.1 to 5.0A

0 to 82µF

± 1%

94%

MVAC250-12AF

12V

0 to 20.8A

0 to 1500uF

+-1%

93%

MVAC250-12AFD

0 to 20.8A

0 to 1500µF

93%

MVAC250-24AFD

0 to 10.4A

0 to 300µF

93%

MVAC250-48AFD

0 to 5.0A

0 to 82µF

94%

Main Output Characteristics (all models)

Parameter

Conditions

Typ.

Max.

Units

50% load step, 1A/µsec slew rate

± 5

%

Settling Time to 1% of Nominal

500

µsec

Turn On Delay

After application of input power

3

sec

Output Voltage Rise

50

msec

Output Holdup

120Vac/60Hz, full load

20

Temperature Coefficient

0.02

%/°C

1%

Remote Sense

Compensates for up to 0.5V of lead drop with

remote sense connected. Protected against

short circuit and reverse connection.

500

mV

Auxilliary Output Characteristics (varies by model)

Auxilliary Output

Aux Output

Load Current

Load Capacitance

Line, Load, Cross

Ripple Voltage &

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%

CB

Test Certificate

and Test Report

PENDING

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