MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 1 of 9
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For full details go to
www.murata-ps.com/rohs
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FEATURES
IEC60601 Ed.3 medical (2 x MOPP Pri-Sec)
EN60950 ITE safety approved
250W compact high density
3" x 5" standard footprint
High effi ciency up to 94%
Remote sense
Remote On/Off, Power OK (MVAC250-xxAFx)
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/auxiliary output with
models MVAC250-xxAFx
RoHS compliant
Active inrush protection
Current sharing option
DESCRIPTION
The MVAC250 series switching power supplies
utilize advanced component and circuit
technologies to deliver high effi ciency. 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
MVAC250-24AFT#24V 12V 5V
MVAC-COVER Optional cover kit assembly; see MVAC-COVER datasheet for details
* Refer to page 2 for current sharing model number MVAC250-xxAFD notes.
# CCC Certifi cation is not available for these models.
INPUT CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Input Voltage Operating Range Single phase 90 115/230 264 Vac
DC 127 300 Vdc
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
No Load Input Power (MVAC250-xxAFD)7(PS_ON = OFF, 5V_Aux = 0A) 1.5 2.0 W
Inrush Current At 264Vac, at 25°C cold start 15 Apk
Power Factor At 230Vac, full load 0.96
OUTPUT CHARACTERISTICS
Model Number Main Output
Voltage (V1) Load Current Maximum Load
Capacitance
Line, Load, Cross
Regulation
Typical Effi ciency
@230Vac
MVAC250-12F 12V 0.4 to 20.8A 0 to 1500µF ± 1% 93%
MVAC250-24F
MVAC250-24AFT 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 12V @ 10.4A60 to 20.8A 0 to 1500µF ± 1.5%693%
MVAC250-24AFD 24V @ 5.2A60 to 10.4A 0 to 300µF ± 1.5%693%
MVAC250-48AFD 50V @ 2.5A60 to 5.0A 0 to 68µF +3.0% / –1.5%694%
Main Output Characteristics (all models)
Parameter Conditions Typ. Max. Units
Transient Response950% 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 Monotonic550 msec
Output Holdup 120Vac/60Hz, full load 20
Temperature Coeffi cient 0.02 %/°C
Ripple Voltage & Noise11 %
Remote Sense
Compensates for up to 0.5V of lead drop with
remote sense connected. Protected against
short circuit and reverse connection.
500 mV
Auxiliary Output Characteristics (varies by model)
Auxiliary Output Aux Output
Voltage8Load Current Load Capacitance Line, Load, Cross
Regulation3
Ripple Voltage &
Noise1
Fan (V2) all models 12V 0 to 1A 0 to 220µF ± 10% 2%
Aux (V3) – MVAC250-xxAFx 5V 0 to 2A 0 to 220µF ± 5% 1%
CB
Test Certifi cate
and Test Report
FEATURES
www.murata-ps.com/en/3d/acdc.html
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Available now at
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REG.-Nr. C457
Recommended Alternative:
PQC250 Series
To Be Discontinued* *LAST TIME BUY: 4/1/2018.
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 2 of 9
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ENVIRONMENTAL CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Storage Temperature Range -40 85
°C
Operating Temperature Range See power rating curves -10 70
Start up -20
Operating Humidity Non-condensing 10 95 %
Operating Altitude -200 5000 m
MTBF Telcordia SR-332 M1C3 @25°C 474K Hours
Shock Operating, MIL-HBK-810E Complies
Non-operating, MIL-HBK-810E Complies
Operational Vibration IEC-68-2-27 standard Complies to levels of IEC721-3-2
Safety – Medical Standards
2 x MOPP (Primary-Secondary)
IEC60601-1 (Ed. 3) – CB Cert & Report
ANSI/AAMI ES60601-1 (2005+ C1:2005+A2:10)
CAN/CSA 22.2 No. 60601-1 (2008) 3rd Edition
EN60601-1:2006+CORR:2010
Safety – ITE Standards
UL60950-1:, 2nd Edition, 2011-12-19
CSA22.2 No..60950-1-07, 2nd Edition, 2001-12.
EN60950-1:2006+A11:2009/A1/2010/A12:2011
IEC 60950 (ed.2), IEC60950 (ed.2);am1
CE Marking per LVD
Warranty 2 years
Outside Dimensions 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm)
Weight MVAC250-xxF: 0.73 lbs (332.9g); MVAC250-xxAFD: 0.76 lbs (344.7g); MVAC250-xxAFT 0.78 lbs (352.7g)
RESIDUAL RISK (PER ISO 14971 & IEC60601-1) FOR USER CONSIDERATION
Fault Condition Residual Risk
Complies Contact your Murata salesperson for details
PROTECTION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Over Voltage Protection4V1 (main output) latching 110 125 %
V3 (aux output: MVAC250-xxAFx) latching 5.5 7.5 V
Over Current Protection4V1, hiccup mode 110 130 %Amax
Over Temperature Protection Auto-recovery Complies
Remote Sense Short Circuit Protection Complies
Remote Sense Reverse Connection Protection Complies
ISOLATION CHARACTERISTICS
Parameter Conditions Min. Typ. Max. Units
Isolation
Primary to Chassis 1500
Vac
Primary to Secondary (2xMOPP) 4000
Secondary to Chassis 500
Output to Output 500
Earth Leakage Current (under single fault condition):
264Vac, 60Hz, 25°C
MVAC250-xxAFD 300
µA
MVAC250-xxAF; -xxAFT 300
MVAC250-xxF 350
Earth Leakage Current (under normal conditions):
264Vac, 60Hz, 25°C
MVAC250-xxAFD 150
MVAC250-xxAF; -xxAFT 150
MVAC250-xxF 250
CURRENT SHARING OPTION – MVAC250-xxAFD ONLY
Model Number Description
MVAC250-12AFD
MVAC250-24AFD
MVAC250-48AFD
Main Output: Current share is achieved using the droop method. Nominal output voltage is achieved at 50% load and output voltage increases/
drops at a rate of:
• 48mv per amp for 12V output
• 192mV per amp for 24V output
• 800mV per amp for 50V output.
Startup of parallel power supplies is not internally synchronized. If more than 250W combined power is needed, start-up synchronization must be
provided by using a common PS_ON signal. To account for ±10% full load current sharing accuracy and the reduction in full load output voltage
due to droop, available output power must be derated by 15% when units are operated in parallel. Current sharing can be achieved with or without
remote sense connected to the common load. If ORing protection is desired, please contact Murata sales for external ORing FET board or external
ORing FET reference circuit design.
Aux (V3) output can be tied together for redundancy but total combined output power must not exceed 10W, external ORing devices must be used.
Fan (V2) can be tied together for redundancy but total combined output power must not exceed 12W, external ORing diodes can be used.
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 3 of 9
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EMISSIONS AND IMMUNITY
Characteristic Standard Compliance
Input Current Harmonics IEC/EN 61000-3-2 Class A
Voltage Fluctuation and Flicker IEC/EN 61000-3-3 Complies
Conducted Emissions EN 55022 Class B
FCC Part 15 Class B
ESD Immunity IEC/EN 61000-4-2 Level 4, Criterion 2
Radiated Field Immunity IEC/EN 61000-4-3 Level 3, Criterion A
Electrical Fast Transient Immunity IEC/EN 61000-4-4 Level 4, Criterion A
Surge Immunity IEC/EN 61000-4-5 Level 3, Criterion A
Radiated Field Conducted Immunity IEC/EN 61000-4-6 Level 3, 10V/m, Criterion A
Magnetic Field Immunity IEC/EN 61000-4-8 Level 3, Criterion A
Voltage dips, interruptions IEC/EN 61000-4-11 Level 3, Criterion B
EMI CONSIDERATIONS
For optimum EMI performance, the power supply should be mounted to a metal plate grounded to all 4 mounting holes of the power supply. To comply with safety standards, this
plate must be properly grounded to protective earth (see mechanical dimension notes). Pre-compliance testing has shown the stand-alone power supply to comply with EN55022
Class A radiated emissions. Class B radiated emissions are achievable with a metal enclosure. Radiated emission results vary with system enclosure and cable routing paths.
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 permanent 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.
7. No load Input power varies by model and by input line. Measurement is difficult to make due to burst
mode operation. Please contact Murata sales if additional information is required.
8. All three output returns are isolated from each other (see isolation characteristics section); the returns
may be tied together externally.
9. Load steps beginning from combined loads on the main and fan outputs of less than 5W may
result in transient undershoots outside of the spec limits.
SAFETY CONSIDERATIONS
1. This power supply is a component level power supply intended for use in Class I or Class II applications. Secondary ground traces need to be suitably isolated
from primary ground traces when used in Class II applications.
2. When the power supply is used in Class II equipment, all ground traces and components connected to the primary side are considered primary for spacing and
insulation considerations.
STATUS AND CONTROL SIGNALS – MVAC250-xxAFD ONLY
Parameter Models Conditions
PS_ON
All models except
as noted below.
This signal must be pulled low (sink current >2mA) to +5V_AUX_RTN to turn on the main and Fan (V2) output. The +5V_AUX output is independent
of the PS_ON signal and comes up automatically when the input AC or input DC voltage is applied within their specified operating ranges.
MVAC250-xxAFT This pin is pulled high internally and so all three outputs (main, Fan output and +5V_AUX) come up automatically when the input AC or input DC voltage
is applied within their specified operating ranges. Pulling this pin low (sink current >2mA) to +5V_AUX_RTN will disable the main and fan outputs.
PWR_OK All models Open collector logic goes high 50-200 msec after main output is in regulation; it goes low at least 6 msec before loss of regulation. Internal 10K pull
up to +5V_AUX is provided. Applications using PWR_OK signal should maintain a minimum load of 5W on the main or fan output.
PART NUMBER STRUCTURE
-
MV
Murata Manufacturing Corp.
A
Form Factor Outline
A = 2x4", 3x5", or 4x7"
x
Outline Detail
B & D = 2x4"
C = 3x5"
F = 4x7"
Main Output Voltage (V)
(12, 24, 28, or 50)
zz hhh
Modification Code Options
A = Aux 5V Standby Voltage
F = Aux 12V Fan Output
D = Droop Current Share
T = Terminal Output Connector
R = Terminal Output Connector with Internal Or-ing Solution and Droop Current Share
Output Power (W)
(40, 65, 120, 160, 250, 400, or 750)
yyy
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 4 of 9
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81
83
85
87
89
91
93
95
0 10 20 30 40 50 60 70 80 90 100
Efficiency %
Load %
MVAC250-12F Efficiency
90 Vin
115 Vin
230 Vin
81
83
85
87
89
91
93
95
0 10 20 30 40 50 60 70 80 90 100
Efficiency %
Load %
MVAC250-24F Efficiency
90 Vin
115 Vin
230 Vin
81
83
85
87
89
91
93
95
0 10 20 30 40 50 60 70 80 90 100
Efficiency %
Load %
MVAC250-48F Efficiency
90 Vin
115 Vin
230 Vin
PERFORMANCE DATA
Time: 100 msec/div, Ch1: 500 V/div, Ch4: 20 A/div, Vin: 264 VAC, Ipk = 15.1 A AC
applied at peak of sine wave
Inrush Current
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 5 of 9
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THERMAL CONSIDERATIONS
System thermal management is critical to the performance and reliability of the MVAC series power supplies. Performance derating curves are provided
which can be used as a guideline for what can be achieved in a system confi guration with controlled airfl ow at various input voltage conditions.
The air fl ow curves are generated using an AMCA 210-99 and ASHRAE 51-1999 compliant wind tunnel with heated inlet air and a controlled CFM
providing a duct test section having a calculated average LFM. A correlation between the test setup and the actual system environment is paramount to
understanding what can be achieved in an actual system. In a power supply of this density, cooling air moving both through the unit as well as around the
unit strongly infl uences local temperatures. The wind tunnel test setup was constructed to produce a fl ow with a slight back pressure to induce both fl ow
conditions by providing a small gap between the power supply and duct walls of 0.5" (13mm). The optimal and characterized airfl ow direction is from the
input connector to the output connector (see diagram below). The P-Q fl ow curve for this test setup is also shown below.
The natural convection data is obtained from a horizontally mounted power supply with un-obstructed fl ow at room temperature. At elevated temperature
the power supply data is taken while it is surrounded by a large vented enclosure to minimize forced cross fl ows inherent in the elevated temperature test
system.
P-Q CURVE, DUCTED FLOW
0.0000
0.0025
0.0050
0.0075
0.0100
02.5 57.5 10 12.5 15 17.5 20 22.5
AIRFLOW-(CFM @ 0.075 lbs/cu ft air density)
Static Pressure (in. w.g.)
Air Flow
13mm [0.5in] all sides
*
64mm [2.5in]
Ambient Temperature
Measurement
Power Supply
Output Connector Input Connector
50
75
100
125
150
175
200
225
250
275
10 20 30 40 50 60 70
Output Power (Was)
Ambient Temperature (Degrees C)
Power Rang at 100Vac
Nat Conv
250LFM
50
75
100
125
150
175
200
225
250
275
10 20 30 40 50 60 70
Output Power (Was)
Ambient Temperature (Degrees C)
Power Rang at 120Vac
Nat Conv
250LFM
50
75
100
125
150
175
200
225
250
275
10 20 30 40 50 60 70
Output Power (Was)
Ambient Temperature (Degrees C)
Power Rang at 230Vac
Nat Conv
250LFM
50
75
100
125
150
175
200
225
250
275
10 20 30 40 50 60 70
Output Power (Was)
Ambient Temperature (Degrees C)
Power Rang at 90Vac
Nat Conv
250LFM
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 6 of 9
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WIRING DIAGRAM FOR OUTPUT
100
10K0
2K49 10K0
10
1N0
100
DC out return
+Remote Sense
-Remote Sense
+DC out
J3 pin 5
J2 pins 1-6
J2 pins 7-12
J3 pin 6
Dotted lines show optional remote sense connections.
Optional remote sense lines can be attached to a load that is a distance
away from the power supply to improve regulation at the load.
MVAC250-xxF
Fan or
other load
J3 pin 3
J3 pin 7 +12V_Fan
+12V_FAN_RTN
DC out return
+Remote Sense
-Remote Sense
+DC out
J3 pin 5
J2 pins 1-6
J2 pins 7-12
J3 pin 6
MVAC250-xxAFx
J3 pin 4
J3 pin 8
J3 pin 1
FET, BJT, wire
or switch (debounced )
to turn on +DC out
and +12V_fan
+5V logic circuitry
+5V_AUX
PS_ON
+5V_AUX_RTN
Fan or
other load
J3 pin 3
J3 pin 7 +12V_Fan
+12V_FAN_RTN
PWR_OK
>2mA
CTR~100
J3 pin 2
+5V_AUX
74LVC2G07
2
6
5
Main Output Load Main Output Load
APPLICATION NOTE
Document Number Description Link
ACAN-42 MVAC Series External ORing FET Reference Circuit www.murata-ps.com/data/apnotes/acan-42.pdf
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 7 of 9
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MECHANICAL DIMENSIONS – MVAC250-xxF ONLY
SAFETY CONSIDERATION NOTES:
1. Protective bonding conductor from the end product protective earthing terminal must be tied to TB1. For optimum EMI performance, while maintaining
Class I safety isolation all 4 mounting holes must be tied to the end product protective earthing terminal. To maintain Class II safety isolation mounting
holes MTG1 and MTG2 need to be isolated from protective earth and should use standoffs of non-conductive material.
2. This power supply requires mounting standoffs of minimum 6mm in height. If there is risk of chassis deformation or shorter standoff height is required,
an appropriate insulator must be used under the power supply with adequate extension beyond the outline of the power supply. In all cases, the
applicable safety standards must be applied to ensure proper creepage and clearance requirements are met.
3. The primary heatsink is considered a live primary circuit, and should not be touched. It is recommended that the primary heatsink be kept at least
3.5mm from chassis and 7mm from secondary circuits. In all cases, the applicable safety standards must be applied to ensure proper creepage and
clearance requirements are met.
4. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to:
http://www.murata-ps.com/requirements/
5. Used only in non-tropical conditions.
6. Double pole/neutral fusing.
Dimensions: 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm)
INPUT/OUTPUT CONNECTOR AND SIGNAL SPECIFICATION AND MATING CONNECTORS – MVAC250-xxF ONLY
Connector PIN Description Mating Housing Crimp terminal/pins
Input Connector J1 :
Molex 26-62-4030
1 AC Neutral Molex 0009930300 Molex 0008500105 (18-24 AWG)
Molex 0008500107 (22-26 AWG)
3 AC Line
Output Connector J2 :
Molex 39-28-1123
1,2,3,4,5,6 +DC_OUT Molex 0039012125 Molex 0039000038
7,8,9,10,11,12 +DC_OUT_RTN
Output Connector J3:
Molex 90130-1108
1 DO NOT USE
Molex 0901420008 Molex 0901190109
2 DO NOT USE
3 +12V_FAN_RTN
4 DO NOT USE
5 + Remote Sense
6 – Remote Sense
7 +12V_FAN
8 DO NOT USE
!
30.0 ±0.25
1.181 ±0.010
5.56 ±0.13
0.219 ±0.005
7
ALL DIMENSIONS ARE IN MM [IN].
8
5
J2
6 12
5
J3
21
43
5.72 [0.225]
64.77 [2.550]115.57 [4.550]4.55 x 2.55
6.35 [0.250]
63.50 [2.500]114.30 [4.500]4.50 x 2.50
C
BAMOUNTING GRIDS
6
71
82
+DC_OUT_RTN7-12
+DC_OUT1-6
9
3
1 04
11
1
DO NOT USE
2
DO NOT USE
3
+12V_FAN_RTN
4
DO NOT USE
5 +REMOTE_SENSE
6-REMOTE_SENSE
7 +12V_FAN
8
DO NOT USE
MTG4
MTG3
J2
PIN1
J3
PIN 1
J3
PIN 8
J2
PIN12
J1
PIN 1
REMOVED
PIN 2
J1
PIN 3
MTG1
PRIMARY
HEATSINK
NOTE 3
MTG2
TB1
0.156 ±0.005
MAX SCREW HEAD
DIAMETER
C
0.005]
7.40
0.13
[
3.96 ±0.13
127.00 ±0.25
0.005]
5.000 ±0.010
[
0.13A
0.005]
0.13
0.005]
[
B
[
0.13
C
MOUNTING SLOTS
WIDTH
76.20 ±0.25
3.000 ±0.010
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 8 of 9
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MECHANICAL DIMENSIONS – MVAC250-xxAF & MVAC250-xxAFD
SAFETY CONSIDERATION NOTES:
1. Protective bonding conductor from the end product protective earthing terminal must be tied to TB1. For optimum EMI performance, while maintaining
Class I safety isolation all 4 mounting holes must be tied to the end product protective earthing terminal. To maintain Class II safety isolation mounting
holes MTG1 and MTG2 need to be isolated from protective earth and should use standoffs of non-conductive material.
2. This power supply requires mounting standoffs of minimum 6mm in height. If there is risk of chassis deformation or shorter standoff height is required,
an appropriate insulator must be used under the power supply with adequate extension beyond the outline of the power supply. In all cases,the
applicable safety standards must be applied to ensure proper creepage and clearance requirements are met.
3. The primary heatsink is considered a live primary circuit, and should not be touched. It is recommended that the primary heatsink be kept at least
3.5mm from chassis and 7mm from secondary circuits. In all cases, the applicable safety standards must be applied to ensure proper creepage and
clearance requirements are met.
4. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to:
http://www.murata-ps.com/requirements/
5. Used only in non-tropical conditions
6. Double pole/neutral fusing.
Dimensions: 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm)
INPUT/OUTPUT CONNECTOR AND SIGNAL SPECIFICATION AND MATING CONNECTORS – MVAC250-xxAF AND MVAC250-xxAFD MODELS
Connector PIN Description Mating Housing Crimp terminal/pins
Input Connector J1:
Molex 26-62-4030
1 AC Neutral Molex 0009930300 Molex 0008500105 (18-24 AWG)
Molex 0008500107 (22-26 AWG)
3 AC Line
Output Connector J2:
Molex 39-28-1123
1,2,3,4,5,6 +DC_OUT Molex 0039012125 Molex 0039000038
7,8,9,10,11,12 +DC_OUT_RTN
Output Connector J3:
Molex 90130-1108
1 +5V_AUX
Molex 0901420008 Molex 0901190109
2 PWR_OK
3 +12V_FAN_RTN
4 PS_ON
5 + Remote Sense
6 – Remote Sense
7 +12V_FAN
8 +5V_AUX_RTN
!
1.181 ±0.010
30.0 ±0.25
5.56 ±0.13
0.219 ±0.005
PIN 1
MTG1
J3
MTG3
PIN1
J2
J3
PIN 8
REMOVED
PIN 2
PIN12
J2
J1
PIN 3
PIN 1
J1
MTG4
PRIMARY
HEATSINK
NOTE 3
MTG2
TB1
B
DIAMETER
MAX SCREW HEAD
3.96 0.13
0.005] [0.156
7.40
0.005]
0.005]
5.000 ±0.010
0.13
[
[
0.005]
127.00 ±0.25
C0.13
[
0.13
3.000 ±0.010
A
WIDTH
MOUNTING SLOTS
76.20 ±0.25
C0.13
[ 0.005]
ALL DIMENSIONS ARE IN MM [IN].
MOUNTING GRIDS A B
C
4.50 x 2.50 114.30 [4.500] 63.50 [2.500]
6.35 [ 0.250]
4.55 x 2.55 115.57 [4.550] 64.77 [2.550]
5.72 [ 0.225]
J2
6 12
5 11
4 10
39
28
17
1-6 +DC_OUT
7-12 +DC_OUT_RTN
J3
21
43
65
87
1 +5V_AUX
2 PWR_OK
3 +12V_FAN_RTN
4 PS_ON
5 +REMOTE_SENSE
6 -REMOTE_SENSE
7 +12V_FAN
8 +5V_AUX_RTN
MVAC250 Series
250W 3" x 5" High Density AC-DC Power Supply Converter
MVAC250.C03 Page 9 of 9
www.murata-ps.com/support
Murata Power Solutions, Inc.
11 Cabot Boulevard, Mansfield, MA 02048-1151 U.S.A.
ISO 9001 and 14001 REGISTERED
This product is subject to the following operating require-
ments and the Life and Safety Critical Application Sales
Policy. Refer to: http://www.murata-ps.com/requirements/
Murata Power Solutions, Inc. (“Murata”) makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the
granting of licenses to make, use, or sell equipment constructed in accordance therewith. Buyer represents and agrees that it has all the necessary expertise to create and implement safeguards that anticipate dangerous consequences of failures, monitor failures and their consequences, lessen
the likelihood of failures that might cause harm, and take appropriate remedial actions. Buyer will fully indemnify Murata, its affiliated companies, and its representatives against any damages arising out of the use of any Murata products in safety-critical applications. Specifications are subject
to change without notice. © 2017 Murata Power Solutions, Inc.
MECHANICAL DIMENSIONS – MVAC250-xxAFT
SAFETY CONSIDERATION NOTES:
1. Protective bonding conductor from the end product protective earthing terminal must be tied to TB1. For optimum EMI performance, while maintaining
Class I safety isolation all 4 mounting holes must be tied to the end product protective earthing terminal. To maintain Class II safety isolation mounting
holes MTG1 and MTG2 need to be isolated from protective earth and should use standoffs of non-conductive material.
2. This power supply requires mounting standoffs of minimum 6mm in height. If there is risk of chassis deformation or shorter standoff height is required,
an appropriate insulator must be used under the power supply with adequate extension beyond the outline of the power supply. In all cases,the
applicable safety standards must be applied to ensure proper creepage and clearance requirements are met.
3. The primary heatsink is considered a live primary circuit, and should not be touched. It is recommended that the primary heatsink be kept at least
3.5mm from chassis and 7mm from secondary circuits. In all cases, the applicable safety standards must be applied to ensure proper creepage and
clearance requirements are met.
4. This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to:
http://www.murata-ps.com/requirements/
5. Used only in non-tropical conditions
6. Double pole/neutral fusing.
Dimensions: 3.0" x 5.0" x 1.4" (76.2mm x 127mm x 35.6mm)
!
!
1.181 ±0.010
30.0 ±0.25
5.56 ±0.13
0.219 ±0.005
TB1
PIN 1
J3
REMOVED
J1
PIN 8
NOTE 3
PIN 2
HEATSINK
SECONDARY
MTG1
MTG2 MTG3
MTG4
J2
TERMINAL -
J3
PIN 1
PIN 3
J1 TERMINAL +
J2
PRIMARY
HEATSINK
NOTE 3
[ [
0.13
[
0.005]
B0.13
[
C
0.13
7.40
[0.156
3.000 ±0.010
3.96
MAX SCREW HEAD
0.005]
DIAMETER
C0.13
A
76.20 ±0.25
0.005]
0.005]
0.13
0.005]
WIDTH
MOUNTING SLOTS
127.00 ±0.25
5.000 ±0.010
J2 (#6-32 INSERTS)
3
+
+DC_OUT
-
+DC_OUT_RTN
J3
21
4
ALL DIMENSIONS ARE IN MM [IN].
5
87
6
MOUNTING GRID A B
C
4.50 x 2.50 114.30 [4.500] 63.50 [ 2.500]
6.35 [0.250]
4.55 x 2.55 115.57 [4.550] 64.77 [ 2.550]
5.72 [0.225]
MVAC250-xxAFT/R
+5V_AUX
PWR_OK
+12V_FAN_RTN
PS_ON
+REMOTE_SENSE
-REMOTE_SENSE
+12V_FAN
+5V_AUX_RTN
1
2
3
4
5
6
7
8
INPUT/OUTPUT CONNECTOR AND SIGNAL SPECIFICATION AND MATING CONNECTORS – MVAC250-xxAFT
Connector Pin Description Mating Housing Crimp Terminal/Pins
Input Connector J1:
Molex 26-62-4030
1 AC Neutral Molex 0009930300 Molex 0008500105 (18-24 AWG)
Molex 0008500107 (22-26 AWG)
3 AC Line
Output Connector J2 + +DC_OUT
– +DC_OUT_RTN
Output Connector J3:
Molex 90130-1108
1 +5V_AUX
Molex 0901420008 Molex 0901190109
2 PWR_OK
3 +12V_FAN_RTN
4 PS_ON
5 + Remote Sense
6 – Remote Sense
7 +12V_FAN
8 +5V_AUX_RTN
