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6-24V Intelligent ATX Power Supply
Before you start...
Please take a moment and read this manual before you install the M3-ATX in
your
vehicle. Often times, rushing into installing the unit can result in serious damage
to your M3-ATX board, computer and probably your car's electrical system.
Always double check the polarity of your wires with a voltmeter.
Avoid using the cigarette plug as a power source, often times the contacts are
not capable of delivering high current to your PC.
Introduction
Thank you for purchasing the M3-ATX power sequencer / vehicle ATX power
supply.
The M3-ATX was designed to work with a wide variety of main boards such as
the VIA mini-ITX motherboards as well as Pentium-M / Celeron or full power
Pentium systems.
M3-ATX Logic Diagram
+
Battery
GND
Ignition SW
Amplifier
Enable
M3-ATX
Installation Guide
Version 1.0c
P/N M3-ATX-01
Reverse and
Switch Logic
+
forward protection
-
M3-ATX
6-24V DC-DC
ATX PSU
8bit MCU
PC
ATX power
Mother Board
ON/OFF switch
Status LED
Serial ctlr
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Table of Contents
Related Manuals for mini-box M3-ATX
Summary of Contents for mini-box M3-ATX
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Page 1: Installation Guide
Thank you for purchasing the M3-ATX power sequencer / vehicle ATX power supply. The M3-ATX was designed to work with a wide variety of main boards such as the VIA mini-ITX motherboards as well as Pentium-M / Celeron or full power Pentium systems. - Page 2 PSU mode (mode P0) Power Output Connectors (left side) Hard drive wire harness (HDD, SATA-HDD, Floppy) ON/OFF and THUMP wire harness (connects to M3-ATX pin header) -ON/OFF wire harness (red/back) to connect to motherboard’s ON/OFF pin headers. -THUMP (white) to connect to amplifier remote ON/OFF connector.
- Page 3 The M3-ATX is addressing these issues by cutting off the 5VSB rail after a pre- defined amount of time (see jumper chart, HARDOFF). During the HARDOFF if the battery level drops below 11.2V for more than one minute, M3-ATX will shut...
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Page 4: Troubleshooting
NOTE. When all config. jumpers are removed, M3-ATX acts as a regular power supply, no ignition timing, no HARDOFF. M3-ATX will send a gratuitous “ON” pulse to the M/B when power is applied for the first time. Do not connect the on/off switch if you don’t want your PC to be started automatically. - Page 5 Embedded PC Solutions Maximum Power Characteristics Output Rail Current (Max) Current Peak Regulation (<30 seconds) 1.5% 3.3V 1.5% 5VSB 1.5A 1.5% -12V 0.15A 0.2A 4-6A (see below) 8A (see below) When operating at <8V or >16V or extreme temperatures, de-rate by 25-50%, ventilation will be required.
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