WLC550 Industrial

Features
l 5 x 3 x 1.5 Inches Form factor
l Up to 550 Watts with Forced Air Cooled
l Efficiencies up to 92%
l -40 to 70 degree operating temperature*
l 12V / 0.5A Fan Output, Thermal Shut-Down feature
l Shall be approved to EN60950-1 2nd Edition
l MTBF : >3M hours as per Telcordia SR-332, issue 3

Electrical Specifications
Input Voltage 90-264 VAC/390 VDC, Universal (Derate from 100% at 115VAC to 78% at 90VAC)
Input Frequency 47-63 Hz
Input Current 115 VAC: 6.0 A max. 230 VAC: 3.0 A max.
No Load Power < 0.5W @ 115VAC < 0.7W @ 230VAC
Inrush Current 115 VAC – 25 A, 230 VAC – 45 A, 264 VAC – 75 A
Leakage Current <200uA @115VAC and <400uA @230VAC
Efficiency 92%(48V), 91%(24V), 90%(12V,15V) typical@ 230VAC full load
Hold-up Time Full Load > 16 ms typical Convection Load > 55 ms typical Conduction Load > 30ms typical
Power Factor exceeds 0.95 with Full Load
Output Power up to 550W (Forced Air Cooled)
up to 250W (Conduction Cooled)
up to 150W (Convection Cooled)
Output Voltage Adjustability +/-3%
Line Regulation +/-0.5%
Load Regulation +/-1%
Transient Response 50-100% step load change, at 0.1A/uS slew rate, 50% duty cycle, 50Hz=5% ,
recovery time < 5 ms
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
Switching Frequency PFC – 70 to 130 KHz ,Resonant – 68 to 80 KHz
Operating Temperature -40 to +70°C, * -40 to 0°C startup is guaranteed with spec deviation (ref note 6)
Storage Temperature -40 to +85°C
Relative Humidity 5% to 95%, noncondensing
Altitude Operating: 16,000 ft.; Nonoperating: 40,000 ft.
Isolation Voltage Input to Output – 3000V AC for ITE application
Input to GND - 1500 VAC

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 Model Number Voltage Max. Load Max. Load7 Max. Load Min. Load Ripple1
(Convection) (Conduction) (400 LFM)
WLC550-1012 12V 9.17A 16.67A 41.67A 0.0A 2%
WLC550-1015 15V 7.33A 13.33A 33.33A 0.0A 2%
WLC550-1024 24V 6.25A 10.42A 22.92A 0.0A 1%
WLC550-1030 30V 5.00A 8.33A 18.33A 0.0A 1%

WLC550-1048 48V 3.13A 5.21A 11.46A 0.0A 1%
WLC550-1058 58V 2.59A 4.31A 9.48A 0.0A 1%

Connectors
J1 Pin 1 AC LINE
Pin 2 NOT FITTED
Pin 3 AC NEUTRAL
J2 Pin 1 V1 +VE
Pin 2 V1 -VE
J3 Pin 1 FAN +VE
Pin 2 FAN -VE

Notes
1. Ripple is peak to peak with 20 MHz bandwidth and 10 µF (Tantalum capacitor) in parallel with a 0.1 µF capacitor at rated line
voltage and load ranges.
2. Combined output power of main output, fan supply shall not exceed max. Power rating.
3. Fan supply output voltage tolerance including set point accuracy, line and load regulation is +/-10% and Ripple and noise is less than 10%.
4. Specifications are for nominal input voltage, 25°C unless otherwise stated.
5. Thermal shutdown feature : The power supply goes in hiccup mode when the temperature of Substrate PCB exceeds 110 °C (+/-10 °C).
6. Output ripple can be more than 10% of the output voltage.
7. Refer Recommended Conduction Plate & Clearance on Page No. 6.

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4EM-17-174 39-DE60-48750-002 / A1
 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
Earth (J4) Molex: 19705-4301
Mating: 19003-0001
DC Output Connector (J2) 6-32 inches Screw Pan HD
(Screw Terminal) 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
Aux (Fan) Output(J3) AMP :640456-2
Mating: 640440-2
Dimensions 5 x 3 x 1.5 inches
(127 x 76.2x 38.1 mm)
Weight 500 gm approx

EMC
Parameter Conditions/Description Criteria
Conducted Emissions EN55032-B, CISPR22-B, FCC PART15-B Pass
Radiated Emissions EN 55032 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 3, 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 3, Criterion A
Voltage dips, interruptions EN 61000-4-11 Criterion A & B

Safety
CE Mark Complies with LVD Directive
Approval Agency Nemko, UL, C-UL
Safety Standard(s) UL 60950-1, 2nd Edition, CAN/CSA C22.2 No. 60950-1-07, 2nd Edition
IEC 60950-1:2005 (Second Edition) + Am 1:2009 + Am2:2013
EN 60950-1:2006/A11:2009/A1:2010/A12:2011/A2:2013
Safety File Number(s) UL Certificate No : 20160627-E150565
CB Test Certificate No : NO93260
Nemko Certificate No : P16221279

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4EM-17-174 39-DE60-48750-002 / A1
 Derating Curve

De-rate linearly from 100% at 115VAC to

78% at 90VAC

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

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

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4EM-17-174 39-DE60-48750-002 / A1
 Maximum Operating Temperature

For reliable and safe operation, please make sure the maximum component temperatures given in table below is not exceeded.

TOP PCB BOTTOM PCB

Ident no Description Max Temp Allowed

(°C)
1 Common mode chokes 95
2 Input Bulk Capacitors 90
3 Differential choke 110
4 Boost Choke 110
5 Output Transformer 125 (for 12V & 15V)
110 (for 24V,30V,48V,58V)
6 Output Capacitor 90
7 Bridge Rectifier 120
8 Aluminium Clad PCB 105
9 Output Rectifiers 110

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4EM-17-174 39-DE60-48750-002 / A1
 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.

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4EM-17-174 39-DE60-48750-002 / A1
 Mounting Option

b c

d e

FIXING OPTION - 1 FIXING OPTION - 2

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4EM-17-174 39-DE60-48750-002 / A1
 Mechanical Drawing

Innovations in Power
4EM-17-174 39-DE60-48750-002 / A1