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VL-EPM-PS1PC/104-<em>Plus</em> Power Supply Module

PC/104-Plus Power Supply Module

PC/104-Plus power supply module. Features 50W continuous output from -40° to +60°C; 25W at +85°C.


  • PC/104-Plus Form Factor
    Industry standard form factor stacks with compatible CPUs and expansion modules.
  • Input Protection
    Diode protected against input polarity reversal. Transient voltage suppression provides enhanced ESD protection.
  • Efficient Design
    Engineered for maximum power efficiency and optimum thermal management.
  • Power Connectors
    Power is provided to the PC/104 stack via the PC/104-Plus power pins or a 4-position screw terminal connector.
  • TTL Level Disable Inputs
    Enables unused power supplies to be shut down to save power or can be used as on/off power switches.
  • RoHS-compliant
    Full compliance with EU Directive 2002/95/EC for devices used in Europe.

Software Expertise: Reference & Software Expertise

Embedded PC/104+ ModuleRoHS-compliant



The EPM-PS1 is a plug-in 50 Watt power supply in a standard PC/104 3.55" x 3.775" (90 mm x 96 mm) format. It is designed to power a stack of PC/104 and/or PC/104-Plus boards. The compact design is an excellent choice for systems with limited space for an internal or external power supply. This high reliability DC/DC switching power supply is designed for use in applications such as transportation, medical, defense, and autonomous robotics. It is ideal for OEMs where long-term availability (5+ years) and rugged design are critical. When used with VersaLogic's other stackable CPU and expansion boards the EPM-PS1 enables complete system designs.

The EPM-PS1 power supply provides up to 50 Watts of continuous output power. This PC/104-Plus expansion module is protected against diode polarity reversal and over-current of up to 40 Volts.

VersaLogic products are designed for use by OEMs working in a variety of market applications: Aerospace, Defense, Energy, Industrial, Security, Medical, Military, Robotics, and Transportation. Anywhere that the need for superb quality and high-performance embedded computing exists, applications include: automation, avionics, gateway, in-vehicle, monitoring, simulation, and vision.

VersaLogic delivers extremely reliable standard and customized embedded computers backed with unsurpassed service and the highest availability in the market. VersaLogic exists to exceed customers' product, service, support and delivery needs - whenever and wherever the need arises.


General Board Size PC/104 standard: 3.55" x 3.775" (90 mm x 96 mm)
Switching Frequency 5V output: 200 KHz fixed
±12V output: 1.2 MHz fixed
Expansion PC/104-Plus: PCI, ISA
RoHS Compliant
Environmental Operating Temperature -40° to +60°C at 50W, derated to 25W at +85°C*
Storage Temperature -40° to +85°C
Thermal Shock 5°C/min over operating temperature
Humidity Less than 95%, noncondensing
Vibration, Sinusoidal Sweep MIL-STD-202G, Method 204, Modified Condition A: 2g constant acceleration from 5 to 500Hz, 20 minutes per axis
Vibration, Random MIL-STD-202G, Method 214A, Condition A: 0.02g²/Hz (5.35g rms), 15 minutes per axis
Mechanical Shock MIL-STD-202G, method 213B, Condition J: 30g half-sine, 11 ms duration per axis
Input Power Requirements +9V to +40V DC, 75W
Protection Transient voltage suppression and fuse
Output 5V 50W (10A) max. continuous from -40° to +60°C, derated to 25W (5A) at +85°C*
±12V 1.8W (150 mA) each max. continuous from -40° to +85°C
Voltage Ripple 5V output: 30 mV peak-to-peak at 50% load
±12V output: 30 mV peak-to-peak at 50% load
Regulation Less than 1%
Protection Overload protection and transient voltage suppression
*Power Derating
Data represents standard operation at 25°C with 5.0V supply unless otherwise noted. Specifications are subject to change without notification. PC/104 and PC/104-Plus are trademarks of the PC/104 Consortium.


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VL-HDW-203PC/104 extractor tool (metal)

Ordering Information

Model Input Voltage Range Power Output Digi-Key logo
VL-EPM-PS1a +9V to +40V DC 50W continuous

Export Information

Description Value
SCHEDULE B:8471.60.7000