The EOS Power EPG300 Series of AC-DC power supplies accommodate a universal input voltage of 90 – 264 VAC, delivering up to 300 W of output power with forced air cooling. The power supplies are available in six single output voltages ranging from 12 V to 58 V. The EPG300 Series can be used in a broad array of space constrained applications in which minimal power loss and easy thermal management are required.

  • 4 x 2 x 1.6
  • New Efficient GaN power technology design
  • 300 Watts Convection Cooled & 250 Watts Forced Cooled
  • Efficiency up to 94%
  • -40 to 70 °C operating temperature
  • High power density : 23.43 W/inch3
  • IEC / EN / UL 62368 Ed 3.0 compliant
  • Thermal shut-down feature
  • MTBF > 800 000 hours
  • Available with metal enclosures/accessories

EPG300-CK Series

Input Specifications
Input Voltage                 90-264 VAC Universal input (Derate linearly from 100% at 115 VAC to 80% at 90 VAC)
Input Frequency 47-63 Hz
Input Current 4 A max
No Load Power less than 2 W typical
Inrush Current 115 VAC – 25 A, 230 VAC – 45 A, 264 VAC – 75 A
Power Factor Exceeds 0.9 at Full Load
Output Specifications
Output Voltage From 12V to 58V (Refers model number matrix table)
Output Power Forced air cooling 375 LFM (115 to 264 VAC) 300W
Convection cooling (180 to 264 VAC) EPG300-0XXX models 250W
Convection cooling (180 to 264 VAC) EPG300-1XXX models 200W
Output Voltage Adjustment +/-3 %
Hold-up Time 8mS Typical (At 230VAC)
Line Regulation +/-0.5 %
Load Regulation +/-0.5 %
Minimum Load 0.0 A
Transient Response Max excursion 5%; 50% step load change at 0.1 A/µs slew rate, 50% duty cycle, 50 Hz Recovery time
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 Forced air cooling (375 LFM)
Convection cooling (natural air flow)
General Specifications
Efficiency 94%(48V, 58V), 92%(30V,24V), 90%(12V,15V)                                
Isolation Voltage Input to Output – 4000 VDC
Input to GND - 2500 VDC
MTBF 800K Hours, Telcordia -SR332-issue 3
Leakage Current 300 uA Typical
Dimensions 4 x 2 x 1.6 inches (101.6 x 50.8 x 40.64 mm) EPG300-0XXX (with base)
4 x 2 x 1.43 inches (101.6 x 50.8 x 36.40 mm) EPG300-1XXX (Open frame)
Weight 300 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
Switching Frequency PFC – 70 to 130 KHz ,PWM – 100-200 KHz
Model Number Description Voltage Max. Load
Max. Load (Convection)
(375 LFM)
Min. Load Ripple1
EPG300-00122With Screw Terminal12 V15.00 A20.84 A0.00 A2 %
EPG300-03122with JST Connector12 V15.00 A18.00 A0.00 A2 %
EPG300-10122With Screw Terminal12 V11.67 A20.84 A0.00 A2 %
EPG300-13122with JST Connector12 V11.67 A18.00 A0.00 A2 %
EPG300-00152With Screw Terminal15 V12.00 A16.67 A0.00 A2 %
EPG300-03152with JST Connector15 V12.00 A16.67 A0.00 A2 %
EPG300-10152With Screw Terminal15 V09.33 A16.67 A0.00 A2 %
EPG300-13152with JST Connector15 V09.33 A16.67 A0.00 A2 %
EPG300-0024With Screw Terminal24 V10.42 A12.5 A0.00 A1 %
EPG300-0324with JST Connector24 V10.42 A12.5 A0.00 A1 %
EPG300-1024With Screw Terminal24 V8.33 A12.5 A0.00 A1 %
EPG300-1324with JST Connector24 V8.33 A12.5 A0.00 A1 %
EPG300-0030With Screw Terminal30 V8.33 A10.00 A0.00 A1 %
EPG300-0330with JST Connector30 V8.33 A10.00 A0.00 A1 %
EPG300-1030With Screw Terminal30 V6.67 A10.00 A0.00 A1 %
EPG300-1330with JST Connector30 V6.67 A10.00 A0.00 A1 %
EPG300-0048With Screw Terminal48 V5.21 A6.25 A0.00 A1 %
EPG300-0348with JST Connector48 V5.21 A6.25 A0.00 A1 %
EPG300-1048With Screw Terminal48 V4.17 A6.25 A0.00 A1 %
EPG300-1348with JST Connector48 V4.17 A6.25 A0.00 A1 %
EPG300-0058With Screw Terminal58 V4.31 A5.17 A0.00 A1 %
EPG300-0358with JST Connector58 V4.31 A5.17 A0.00 A1 %
EPG300-1058With Screw Terminal58 V3.45 A5.17 A0.00 A1 %
EPG300-1358with JST Connector58 V3.45 A5.17 A0.00 A1 %
EPG300-CK Metal Cover Kit Accessory Available.
General Notes:
  • When used in Cover Kit, derate output power to 70% under all operating conditions
  • Output ripple can be more than 2 % of the output voltage at low load condition
  • All specifications are measured at nominal input voltage, 25°C, unless otherwise specified
  • EPG300-13XX-G series is with specific connector & Mounting Hole Provision, refer mechanical specification. (Contact Sales for more details)
  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. Refer Derating Curves
  3. Output ripple can be more than 10 % of the output voltage
Derating Curve
EPG300 o/p derating and i/p derating
Output Power Derating w.r.t. Input voltage

EPG300 derating curve 24 to 58v Convection load: 200 W up to 30°C; derate above 30°C @ 1.25% per °C (EPG300-1XXX models)
Convection load: 250 W up to 30°C; derate above 30°C @ 1.25% per °C (EPG300-0XXX models)
Forced air load: 300 W up to 40°C; derate above 40°C @ 1.67% per °C
Power Derating of 24 V, 30 V, 48 V & 58 V models (Open frame / L channel / U bracket options)

EPG300 derating curve of 12 to 15v Convection load: 140 W up to 30°C; derate above 30°C @ 1.25% per °C (EPG300-1XXX models)
Convection load: 180 W up to 30°C; derate above 30°C @ 1.25% per °C (EPG300-0XXX models)
Forced air load: 250 W up to 40°C; derate above 40°C @ 1.67% per °C
Power Derating of 12 V & 15 V models (Open frame / L channel / U bracket options)

EPG300 derating for CK Bracket
Power Derating of 24 V, 30 V, 48 V & 58 V models (Cover kit option)

EPG300 derating for 12-15 CK
Power Derating of 12 V & 15 V models (Cover kit option)

Parameter Conditions/Description Criteria
Conducted Emissions EN 55032-B, CISPR22-B, FCC PART15-B Pass
Radiated Emissions EN 55032 A Pass
Level B with external core (King core K5B RC 25x12x15-M or equivalent in input cable)
Input Current Harmonics EN 61000-3-2 Class A
Voltage Fluctuation and Flicker EN 61000-3-3
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) IEC62368-1
UL 62368-1 & CAN/CSA C22.2 No. 62368-1
Approval Agency Nemko, UL, C-UL
Safety File Number(s) Class-I : UL : Certificate No: Pending, Nemko: Certificate No.: Pending, CB Ref. Certificate No.: Pending
CB Class - I Certificate
Nemko Class - I 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
AC Input Connector (J1)4 TYCO: 5-1376382-1 or equivalent
Mating: 1376388-1 (TYCO) or equivalent
Pin 1
Pin 2
DC Ouput Connector (J2)
(Screw Terminal)
6-32 inches Screw Pan HD Vertical
Mating: Designed to accept Ring Tongue Terminal AMP: 8-31886-1
Pin 1,2,3
PIN 4,5,6
V1 +VE
V1 -VE
DC Ouput Connector (J2)
(JST Connector)
JST p/n: B6P-VH(LF)(SN)
Mating: JST p/n: VHR-6M or MOLEX p/n: 511440600 or
TE connectivity p/n: 2132781-6, Pins: SVH-41T-P1.1
Pin 1,2,3
PIN 4,5,6
V1 +VE
V1 -VE
DC Ouput Connector (J2)4 Molex: 39-28-1043 or equivalent
Mating : 39-01-2040 (Molex) or equivalent
Pin 1,2
Pin 3,4
V1 +VE
V1 -VE
Aux Output (Fan)
Molex: 22-05-7025
Mating: 50-37-5023
Pin 1
Pin 2
4AC Input (J1) and DC Output (J2) connectors for EPG300-13XX-G models
Mechnical Drawing


Mechnical Drawing


Mechnical Drawing


Mechnical Drawing


Mechnical Drawing


Certificate Standard Downloads
CB Class - I Certificate IEC 62368-1:2018
Nemko Class - I Certificate EN 62368-1:2020;A11
UL Class - I Certificate UL 62368-1 and CAN/CSA C22.2 No. 62368-1

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