WLP Blue Series offers the size conscious customer industry leading watts per cubic inch in height profiles ranging from 25 mm to 30 mm in industry standard footprints. The Blue Series allows customers shrink their applications without compromising on power, quality or functionality.

  • 4 x 2 x 1 Inches Form factor
  • 225 Watts Forced Cooled, 130W Convection cooled
  • Efficiencies up to 94 %
  • -40°C to 70°C degree operating temperature
  • 12V/0.5A Fan Output, Thermal Shut-Down feature
  • 3.37m Hours, Telcordia -SR332-issue 3 MTBF
  • No Load Power < 0.5W
  • Remote ON/OFFNEW
  • Now IEC/EN/UL62368-1:2018 (Ed 3.0) CompliantNEW
  • CCC(China Compulsory Certification approval)NEW
  • Approved with metal enclosures/accessories

WLP225-CK Series

Input Specifications
Input Voltage 85-264 VAC/390 VDC, Universal
(Derate from 100 % at 100V AC to 95 % at 85V AC)                                                   
Input Frequency 47-63 Hz
Input Current 2.2 A max @ 115 VAC AND 1.1 A max @ 230 VAC
No Load Power less than 0.5W typical
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 225W with 13 CFM, up to 120W Convection
Hold-up Time at 225W:10 ms ; 110W: 16 ms
Line Regulation +/-0.5 %
Load Regulation +/-0.5 %
Minimum Load 0.0 A
Transient Response max excursion 4 %; 25 % step load change at 0.1A/uS slew rate, 50 % duty cycle, 50/60Hz, recovery time < 5 ms.
Ripple1 1.0 % max for all outputs.
Rise Time 55 ms typical
Set Point Tolerance +/-1 %
Output Voltage Adjustment +/-3 %
Over Current Protection >110 %
Over Voltage Protection 110 to 140 %
Short Circuit Protection Hiccup mode
Cooling up to 225W with 13 CFM forced air cooling2(refer Mechanical Drawing)
up to 120 W with natural convection cooling2(refer Derating Curve)
General Specifications
Efficiency 94 % (48V), 93 % (24V,30V), 92 % (12V,15V)                                                                                
Isolation Voltage Input to Output – 3000V AC for ITE application
Input to GND - 1500 VAC (Not Applicable For Class II Option)
Power Factor Exceeds 0.95 with Full Load
MTBF 3.37m Hours, Telcordia -SR332-issue 3
Switching Frequency PFC – 70 to 130 KHz ,PWM – 50-80 KHz
Leakage Current 300 uA Typical, (N.A. For Class II Option) Touch current <100uA
Dimensions 4 x 2 x 1 inches
(101.60 x 50.8x 25.4 mm)
Weight 200 gm approx
Environmental Specifications
Operating Temperature - 40 to +70°C, (-40 to 0°C startup is guaranteed with spec deviation)3                                                             
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 Supply Unit &
its Installation Type
Power Voltage Max. Load (Convection)
(112.5 W) 50°C
Max. Load (Convection)
(120 W) 40°C
Max. Load (13 CFM)
(225 W)
LFWLP225-1X01-CKIn CK cover Kit84 W12 V6.50 A7.00 A-
LFWLP225-1X01In Open Frame

225 W

12 V

9.37 A

10.00 A

18.75 A
LFWLP225-1X01-LWith L Bracket
LFWLP225-1X01-BWith Base Plate
LFWLP225-1X01-UWith U channel
LFWLP225-1X02-CKIn CK cover Kit84 W15 V5.25 A5.60 A-
LFWLP225-1X02In Open Frame

225 W

15 V

7.5 A

8.0 A

15.0 A
LFWLP225-1X02-LWith L Bracket
LFWLP225-1X02-BWith Base Plate
LFWLP225-1X02-UWith U channel
LFWLP225-1X03-CKIn CK cover Kit84 W24 V3.28 A3.50 A-
LFWLP225-1X03In Open Frame

225 W

24 V

4.68 A

5.0 A

9.37 A
LFWLP225-1X03-LWith L Bracket
LFWLP225-1X03-BWith Base Plate
LFWLP225-1X03-UWith U channel
LFWLP225-1X04-CKIn CK cover Kit84 W48 V1.64 A1.75 A-
LFWLP225-1X04In Open Frame

225 W

48 V

2.34 A

2.5 A

4.68 A
LFWLP225-1X04-LWith L Bracket
LFWLP225-1X04-BWith Base Plate
LFWLP225-1X04-UWith U channel
LFWLP225-1X05-CKIn CK cover Kit84 W30 V2.63 A2.80 A-
LFWLP225-1X05In Open Frame

225 W

30 V

3.75 A

4.0 A

7.5 A
LFWLP225-1X05-LWith L Bracket
LFWLP225-1X05-BWith Base Plate
LFWLP225-1X05-UWith U channel
LFWLP225-1X06-CKIn CK cover Kit84 W58 V1.36 A1.45 A-
LFWLP225-1X06In Open Frame

225 W

58 V

1.94 A

2.07 A

3.88 A
LFWLP225-1X06-LWith L Bracket
LFWLP225-1X06-BWith Base Plate
LFWLP225-1X06-UWith U channel
For Screw Terminal version replace "X" above with "0" (examples: LFWLP225-1005)
For Header version replace "X" above with "3" (examples: LFWLP225-1305)
Add Suffix '0' for Remote On/Off option (example: LFWLP225-1303-0)
General Notes:
  • 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 +/-15 % and Ripple and noise is less than 10 %.
    With V1 fully loaded, Vfan need to have min load of 20mA to be within regulation band.
  • Specifications are for nominal input voltage, 25°C unless otherwise stated.
  • When used in Cover Kit, de-rate output power to 70 % under all operating conditions
  • Class II version available. Add “-II” suffix at the end of the Model Number to Order.
  1. 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.
  2. 225W with 13CFM forced air cooling and 120W with natural convection cooling at 100 to 264VAC.
  3. Output ripple can be more than 10 % of the output voltage.
  4. Adjustment potentiometer is located on the SMT side of the PCB.
  5. For improved thermal performance of WLP225 up to 130W convection cooling, enquire with EOS Sales Rep before Order.
Note: External Supply voltage can be changed with pre Information
Derating Curve
WLP225-Derating curve Convection load: 120W up to 40 °C
De-rate between 40-50 °C @ 0.625% per °C
De-rate above 50 °C @ 2.33% per °C

Forced air cooled load : 225W up to 50°C
De-rate above 50 °C @ 2.5% per °C
WLP225-CK Convection load: 84W up to 40 °C
De-rate between 40-50 °C @ 0.625% per °C
De-rate above 50 °C @ 2.33% per °C
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
CE Mark Complies with LVD Directive
Safety Standard(s) IEC 62368-1:2018, IEC 60950-1(ed.2);am1;am2, EN 60950-1:2006;A11;A1;A12;A2, UL 62368-1 and CAN/CSA C22.2 No. 62368-1:19,
UL 60950-1 and CAN/CSA C22.2 No. 60950-1-07, GB4943.1-2011;GB9254-2008;GB17625.1-2012
Approval Agency Nemko, UL, C-UL, CCC
Safety File Number(s) Class-I : Nemko : Certificate No. P14219072, CB Ref. Certif. No.: N0110371, UL: Certificate Number 20200529-E515384,
CCC Certificate No.: 2015010907830085
CB Class - I Certificate
CB Class - II Certificate
NEMKO Class - I Certificate
NEMKO Class - II Certificate
UL Class - I Certificate
Mechanical Specifications
AC Input Connector (J1) Molex: 26-60-4030
Mating: 09-50-3031; Pins: 08-50-0106
Pin 1
Pin 2
Pin 3
DC Ouput Connector (J2) Option 1
(Screw Terminal)
Molex: 39357 Series or equivalent
Pin 1,2,3
Pin 4,5,6
V1 +VE
V1 -VE
DC Ouput Connector (J2) Option 2
(Molex Connector)
Molex: 26-60-4060
Mating: 09-50-3061; Pins: 08-50-0106
Pin 1,2,3
Pin 4,5,6
V1 +VE
V1 -VE
Aux (Fan) Output(J3) AMP :640456-2
Mating: 640440-2
Pin 1
Pin 2
Screw Terminal
Tyco Header
    General Notes: In case the PCB is mounted in a metal enclosure, using metal hardware ensure the following
  1. Stand off, used to mount PCB has OD of 5.4 mm max.
  2. Screws, used to fix PCB on stand off, have head dia of 6.0 mm max.
  3. Washer, if used, to have dia of 6.5 mm max.
Mechanical Drawing
Mechanical Drawing
Mechanical Drawing
Mechanical Drawing
Mechanical Drawing
Certificate Standard Downloads
CB Class - I Certificate IEC 62368-1:2018
IEC 60950-1(ed.2);am1;am2
Nemko Class - I Certificate EN 60950-1:2006;A11;A1;A12;A2
UL Class - I Certificate UL 62368-1 and CAN/CSA C22.2 No. 62368-1:19
UL 60950-1 and CAN/CSA C22.2 No. 60950-1-07
CCC Certificate GB4943.1-2011;GB9254-2008;GB17625.1-2012
CB Class - II Certificate IEC 60950-1(ed.2);am1;am2
Nemko Class - II Certificate EN 60950-1:2006;A11;A1;A12;A2
UL Class - II Certificate UL 60950-1 and CAN/CSA C22.2 No. 60950-1-07

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