Mode Of Operation; M4-Atx Characteristics; Maximum Power Characteristics; 12V Rail Output Current - mini-box M4-ATX Installation Manual

http://mini-box.com, Embedded PC Solutions
Loud amplifier pops when PC starts. If your PC is connected to your car amplifier, you
will hear a loud pop when the computer is first started. The M4-ATX has an 'anti-thump'
control that will keep your amp OFF while the PC starts. Simply connect the white wire
from your M4-ATX cable harness to your amplifier remote control pin.

Mode of operation

1)
Ignition=OFF. Nothing happens. M4-ATX is waiting for ignition signals.
2)
Ignition=ON. M4-ATX waits for 2-3 seconds then turns on the 5VSB rail. After another second M4-ATX sends
an "ON" signal to the motherboard via the 2 wires connected to the motherboard's ON/OFF pins. The
motherboard will turn ON and your system should start booting.
3)
Ignition=ON. Your computer will remain ON.
4)
Ignition=OFF. M4-ATX waits for "OFFDELAY" in seconds (see jumper chart) and then it turns the motherboard
OFF by sending a signal to the motherboard's ON/OFF switch. Your computer should turn off gracefully
(shutdown procedure). After shutdown, 5VSB will still be provided for another "HARDOFF" seconds. In the
event where the shutdown process is longer than "HARDOFF" (Operating System gets frozen, etc), power will
be shut down hard, turning off all power rails. During the HARDOFF procedure, the battery levels will be
constantly monitored to prevent deep discharge situations.
5)
M4-ATX will go to step 1, if ignition is tuned ON again.
NOTE. When all dip switches are off, M4-ATX acts as a regular power supply, no ignition timing, no HARDOFF. M4-
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.

M4-ATX Characteristics

Minimum Input Operating. voltage
Maximum input Operating voltage
Deep-Discharge shutdown threshold
Input current limit (fuse protected)
Max Output Power
Deep Sleep Current Consumption.
Storage and operating temperature
MTBF
Efficiency (Input 9-16V)
Input connectors
Output Connector
*Unit shuts down when internal temperature sensor indicates > 85C. This value can be changed with software.

Maximum Power Characteristics

Output Rail Current (Max)
5V 15A
3.3V 15A
5VSB 1.5A
-12V 0.15A
12V 10A (see below)
When operating at <8V or >28V or extreme temperatures, de-rate by 25%, ventilation might be required.
When operating at constant 160watts or more forced ventilation might be required.
12V Rail Output Current (12V buck/boost converter)
Input (V) 12V out current
6-8V 8A (10A peak)
8-11V 10A (12A peak)
Support and warranty: Standard Hardware Warranty 1Year / US, 2 Year EU
M4-ATX User Guide
6V
30V (hard clamping will occur at 34V)
11.2V
Mini-blade 25A
250 Watts / 300 watts peak
< 1.6mA
-40 to +125 degrees Celsius (storage), -40 – 65C (operating)
200,000 Hrs
>95%, all rails combined, 50% load.
M4 screw terminal
ATX Power 24 pin (Molex P/N 39-01-2200)
Current Peak
(<30 seconds)
20A
20A
2A
0.2A
16A (see below)
Input (V) 12V out current
11-16V 12A (16A peak)
16-30V 12A (14A peak)
Page 4
Regulation
1.5%
1.5%
1.5%
10%
2%