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Contents Copyright © 2013
All Rights Reserved
Notice:
Although every effort has been made to ensure this document is error-free, VersaLogic makes no
representations or warranties with respect to this product and specifically disclaims any implied warranties of
merchantability or fitness for any particular purpose.
VersaLogic reserves the right to revise this product and associated documentation at any time without
obligation to notify anyone of such changes.
PC/104 and the PC/104 logo are trademarks of the PC/104 Consortium.
MEPMPS1
EPM-PS1 Reference Manual
ii
Contents
Introduction ..................................................................................................................... 1
Features............................................................................................................................... 1
Technical Specifications ..................................................................................................... 2
Block Diagram.................................................................................................................... 3
RoHS-Compliance .............................................................................................................. 4
About RoHS........................................................................................................... 4
Warnings............................................................................................................................. 4
Electrostatic Discharge .......................................................................................... 4
Transient Voltage Suppression (TVS) Devices ..................................................... 5
Technical Support ............................................................................................................... 6
Repair Service........................................................................................................ 6
Physical Description ....................................................................................................... 7
Dimensions and Mounting.................................................................................................. 7
Hardware Assembly............................................................................................... 8
Stack Arrangement Example ................................................................................. 8
External Connectors............................................................................................................ 9
EPM-PS1 Connectors ............................................................................................ 9
EPM-PS1 Connector Functions and Interface Cables ......................................... 11
Jumper Block .................................................................................................................... 12
Jumpers As-Shipped Configuration..................................................................... 12
Operation ....................................................................................................................... 13
Main Power Input ............................................................................................................. 13
Power Out ......................................................................................................................... 13
J5 Connector Power Out ...................................................................................... 13
ISA and PCI Connector Power Out ..................................................................... 13
Power Supply Control....................................................................................................... 16
Efficiency and Derating .................................................................................................... 16
Appendix A – References ............................................................................................. 18
EPM-PS1 Reference Manual
iv
Introduction
Features
1
The EPM-PS1 is a DC switching power supply designed for high reliability in a wide variety of
applications. The rugged design is conservatively rated to provide continuous 50 watt power
output. When designing stacking PC/104-Plus compatible systems, OEMs and system integrators
are able to develop entire systems using VersaLogic CPUs, I/O expansion modules and power
supplies. Its features include:
PC/104-Plus compliant footprint.
Transient voltage suppression
provides enhanced ESD protection.
Protected against output over-
current, input over-current, and
input polarity reversal.
Engineered to minimize heat
generation with 91% peak
efficiency.
Designed to provide -40° to +85°C
operation for reliable use in harsh
environments.
All EPM-PS1 boards are subjected to functional testing and are backed by a limited two-year
warranty. Careful parts sourcing and US-based technical support ensure the highest possible
quality, reliability, service and product longevity for this exceptional PC/104-Plus module.
Full compliance with EU Directive
2002/95/EC (RoHS) for devices used in
Europe.
Power is supplied into the PC/104-Plus
(PCI) and PC/104 (ISA) buses or can be
accessed from the screw clamp terminal
blocks.
Each voltage output can be enabled or
disabled with an external input signal.
EPM-PS1 Reference Manual
1
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