MWLC550
The EOS MWLC Conduction Rated Arctic Series addresses the growing demand in the market for conduction rated power supplies. 550 watts of EOS Power in 22.5 cubic inches which can be used in conduction, convection or forced-air modes of operation.
FEATURES
- 5 x 3 x 1.5 Inches Form factor
- Up to 550 Watts with Forced Air Cooled
- Efficiencies up to 92 %
- -40 to 70 degree operating temperature
- 12 V / 0.5 A Fan Output
- Thermal Shut-Down feature
- Shall be approved to EN60601-1 3rd Edition
- Meets EN60601-1-2, 4th Edition
- Medical (BF) Safety Approvals
- MTBF : >3M hours as per Telcordia SR-332, issue 3
Input Specifications
Input Voltage | 90-264 VAC/390 VDC, Universal (Derate from 100 % at 115VAC to 78 % at 90VAC)                                    |
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Input Frequency | 47-63 Hz | |
Input Current | 6.0 A max @ 115 VAC and 3.0 A max @ 230 VAC | |
No Load Power | < 0.5W @ 115 VAC and < 0.7W @ 230 VAC | |
Inrush Current | 25 A @ 115 VAC; 45 A @ 230 VAC; 75 A @ 264 VAC |
Output Specifications
Output Voltage | From 12V to 58V (Refer model number matrix table)                                                                                 | |
Output Power | up to 550W (Forced Air Cooled) up to 250W (Conduction Cooled) up to 150W (Convection Cooled) |
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Output Voltage Adjustability | +/-3 % | |
Hold-up Time | Full Load > 16 ms typical Convection Load > 55 ms typical Conduction Load > 30ms typical | |
Line Regulation | +/-0.5 % | |
Load Regulation | +/-1 % | |
Minimum Load | 0.0 A | |
Transient Response | max excursion 5 %; 50-100 % step load change at 0.1 A/uS slew rate, 50 % duty cycle, 50/60Hz, recovery time < 5 ms | |
Ripple1 | 1.0 % max for all outputs, 2% max for 12V & 15V. | |
Rise Time | 55 ms typical | |
Set Point Tolerance | +/-1 % | |
Over Current Protection | >110 % ,Hiccup mode / Auto Recovery | |
Over Voltage Protection | 110 to 140 % , Hiccup mode / Auto Recovery | |
Short Circuit Protection | Hiccup mode / Auto Recovery | |
Cooling | Up to 150W max with Convection Cooled (refer Derating Curve) Up to 250W max with Conduction Cooled (refer Derating Curve) Up to 550W max with 400 LFM Forced Air Cooled (refer Derating Curve) |
General Specifications
Efficiency | 92 %(48V), 91 % (24V), 90 % (12V,15V) typical @ 230VAC full load                                       | |
Isolation Voltage | Input to Output – 4000 VAC, Input to GND - 1500 VAC, Output to GND - 1500VAC for type BF, 500VAC for type B |
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Power Factor | Exceeds 0.95 with Full Load | |
Switching Frequency | PFC – 70 to 130 KHz ,PWM – 50-80 KHz | |
Leakage Current | < 200uA @115VAC and < 400uA @ 230VAC Touch current < 100uA | |
Dimensions | 5 x 3 x 1.5 inches (127 x 76.2x 38.1 mm) |
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Weight | 500 gm approx |
Environmental Specifications
Operating Temperature | - 40 to + 70°C, (-40 to 0°C startup is guaranteed with spec deviation)2                                             | |
Storage Temperature | -40 to +85°C | |
Relative Humidity | 5 % to 95 %, noncondensing | |
Altitude | Operating: 16,000 ft.; Non-operating: 40,000 ft |
Model Number | Power | Voltage | Max. Load (Convection) |
Max. Load3 (Conduction) |
Max. Load (400 LFM) |
MWLC550-1012 | 500 W | 12 V | 9.17 A | 16.67 A | 41.67 A |
MWLC550-1015 | 500 W | 15 V | 7.33 A | 13.33 A | 33.33 A |
MWLC550-1024 | 550 W | 24 V | 6.25 A | 10.42 A | 22.92 A |
MWLC550-1030 | 550 W | 30 V | 5.00 A | 8.33 A | 18.33 A |
MWLC550-1048 | 550 W | 48 V | 3.13 A | 5.21 A | 11.46 A |
MWLC550-1058 | 550 W | 58 V | 2.59 A | 4.31 A | 9.48 A |
- Combined output power of main output, fan supply shall not exceed max. Power rating.
- Fan supply output voltage tolerance including set point accuracy, line and load regulation is +/-10 % and Ripple and noise is less than 10 %.
- Specifications are for nominal input voltage, 25°C unless otherwise stated.
- Thermal shutdown feature : The power supply goes in hiccup mode when the temperature of Substrate PCB exceeds 110 °C (+/-10 °C).
- Ripple is peak to peak with 20 MHz bandwidth and 10 μF (Electrolytic capacitor) in parallel with a 0.1 μF capacitor at rated line voltage and load ranges.
- Output ripple can be more than 10 % of the output voltage.
- Refer "Recommended Conduction Plate & Clearance" details in Mechanical Specifications section.
Derating Curve
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De-rate linearly from 100 % 115 VAC to 78 % at 90 VAC
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Convection load: 110W up to 50 °C De-rate above 50 °C @ 2.5% per °C Conduction load: 200W up to 50 °C De-rate above 50 °C @ 2.5 % per °C Forced air cooled load : 500W up to 50°C De-rate above 50 °C @ 2.5 % per °C |
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Convection load: 150W up to 50 °C De-rate above 50 °C @ 2.5 % per °C Conduction load: 250W up to 50 °C De-rate above 50 °C @ 2.5 % per °C Forced air cooled load : 550W up to 50°C De-rate above 50 °C @ 2.5 % per °C |
EMC
Parameter | Conditions/Description | Criteria |
Conducted Emissions | EN 55011-B,CISPR22-B, FCC PART15-B | Pass |
Radiated Emissions | EN 55011 A |
Pass Level B with external core (King core K5B RC 25x12x15-M in input cable) |
Input Current Harmonics | EN 61000-3-2 | Class D |
Voltage Fluctuation and Flicker | EN 61000-3-3 | Pass |
ESD Immunity | EN 61000-4-2 | Level 4, Criterion A |
Radiated Field Immunity | EN 61000-4-3 | Level 3, Criterion A |
Electrical Fast Transient Immunity | EN 61000-4-4 | Level 3, Criterion A |
Surge Immunity | EN 61000-4-5 | Level 3, Criterion A |
Conducted Immunity | EN 61000-4-6 | Level 3, Criterion A |
Magnetic Field Immunity | EN 61000-4-8 | Level 4, Criterion A |
Voltage dips, interruptions | EN 61000-4-11 | Criterion B |
Safety
CE Mark | Complies with LVD Directive |
Safety Standard(s) |
UL /CSA : ANSI/AAMI ES60601-1 (2005 + C1:09 + A2:10) AMD1:2012; CORR1:2009; AMD2:2010, (CAN/CSA-C22.2 No. 60601-1 (2008)CAN/CSA C22.2 No. 60601-1:14 IEC : IEC 60601-1: 2005 + CORR. 1:2006 + CORR. 2:2007 + AM1:2012(or IEC 60601-1: 2012 reprint) EN : EN 60601-1:2006;A1 |
Approval Agency | Nemko, UL, C-UL |
Safety File Number(s) |
UL Certificate No : E173812 CB Test Certificate No : NO93054 Nemko Certificate No : P16221240 |
Mechanical Specifications
AC Input Connector (J1) | JST : B3P-VH-B(LF)(SN) or equivalent Mating: VHR-3M or equivalent Pins : SVH-41T-P1.1 or equivalent |
Pin 1 Pin 2 Pin 3 |
AC LINE NOT FITTED AC NEUTRAL |
DC Output Connector (J2) (Screw Terminal) |
6-32 inches Screw Pan HD Mating: Designed to accept Ring Tongue Terminal AMP : 8-31886-1, wherein one 16 AWG(max) wire can be crimped. Note : One Ring Tongue Terminal with 16 AWG is recommended for current up to 11A only. Use multiple tongue terminals with wire for more current. |
Pin 1, Pin 2 |
V1 +VE V1 -VE |
Aux (Fan) Output(J3) | AMP :640456-2 Mating: 640440-2 |
Pin 1 Pin 2 |
FAN +VE FAN -VE |
EARTH (J4) |
Molex: 19705-4301 Mating: 19003-0001 |
Maximum Operating Temperature
For reliable and safe operation, please make sure the maximum component temperatures given in table below is not exceeded.
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Recommended Conduction Plate & Clearance
Conduction power rating mentioned in the table is with additional aluminium base plate of 3 mm thickness with 177.8mm(7in) length & 101.6mm(4in) width. Clearance of minimum 15mm above the component height is recommended for better thermal management.

Mounting Option

Mechanical Drawing

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General Notes: In case the PCB is mounted in a metal enclosure, using metal hardware ensure the following
- Stand off, used to mount PCB has OD of 5.4 mm max.
- Screws, used to fix PCB on stand off, have head dia of 6.0 mm max.
- Washer, if used, to have dia of 6.5 mm max.