M4-ATX Manual - Mini
Contents
1. M4 ATX 6 30V Intelligent ATX Power Supply Installation Guide Version 1 0e P N M4 ATX 01 Before you start Please take a moment and read this manual before you install the M4 ATX in your vehicle Often times rushing into installing the unit can result in serious damage to your M4 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 M4 ATX power sequencer vehicle ATX power supply The M4 ATX was designed to work with a wide variety of main boards ranging from low power to fully fledged Intel AMD or VIA motherboards M4 ATX Logic Diagram PC ATX PSU ON OFF switch pemu max Reverse and L http mini box com Embedded PC Solutions 1 2 M4 ATX Connection diagram Power Input Connectors bottom right Left Battery negative GND Center Ignition To start connect to Battery Do not use in the standard PSU mode mode PO Right Battery positive A ATX Power Output Connector 20 24 pin connector B 12V ATX power output connector 4 pin C Configuration dip switches J5 For internal use only do not use J6 Amplifier THUMP wire harness connects to the M4 ATX pin header J3 Fan Header Positive pin is closes2. Page 4
3. consume about 50 150mA on the 5VSB rail No matter how big your battery is you will eventually drain it if proper actions are not taken The M4 ATX is addressing these issues by cutting off the 5VSB rail after a pre defined amount of time see jumper chart HARDOFF During HARDOFF if the battery level drops below 11 2V for more than one minute M4 ATX will shut down and re activate only when the input voltage is above 12V Engine Cranks under voltage and over voltage situations Another difficult task is maintaining stable power to your PC While car batteries are rated at 12V they actually provide voltages in between 8 16V engine cranks or as high as 80 volts load dump Most times your battery will stay at 13 5V but extra precautions need to take place in M4 ATX User Guide Page 3 http mini box com Embedded PC Solutions order to prevent such situations M4 ATX operates as low as 6V and as high as 30V while providing strict regulation as well as input voltage clamping and reverse protection Anti Thump 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 2 pin wire to J6 harness to your amplifier remote control pins The pin at the edge of the PCB is GND inner pin is HOT Mode of operation explained 1 2 3 5 Ignition OFF Nothing happens M4 ATX is wa
4. iting for ignition signals Ignition ON M4 ATX waits for few 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 The Ignition state will be latched for 60 more seconds so that the motherboard will have a change to come up in a clean manner Ignition ON Your computer will remain ON 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 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 M4 ATX will also send a gratuitous ON pulse to the ON OFF motherboard pins should you have a wire harness connected to it 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 Cha
5. ition in ON position for the next 60 seconds allowing your operating system to fully come up This will prevent disk drive corruption or systems that remain hung in the ON position After the first 60 seconds of system operation the AutoLatch feature will be removed and system will shut down at as governed by the Off delay setting PO In this mode the M4 ATX behaves like a regular ATX power supply If J6 is connected to the motherboard M4 ATX will also send a gratuitous ON pulse to the motherboard right after power is first applied P1 recommended Sends ON pulse to motherboard when ignition is ON for more than 5 seconds sends OFF pulse to motherboard 5 seconds after ignition is turned off Waits another 60 seconds and then shuts down 5VSB to conserve battery In this mode the M4 ATX consumes less than 0 5mA This is our recommended setting NOTE Should you need to reset to factory defaults in case changes were made via the USB uplink simply power off the unit connect a jumper to JP1 and then apply power back up for more than 2 seconds The LED light will start to flash rapidly indicating that the factory defaults were loaded Don t forget to Remove jumper Disconnect M4 ATX from battery for at least few seconds You are done Power challenges in a vehicle PC One of most difficult tasks of operating a PC ina vehicle is power consumption while the computer is OFF Even when your computer is OFF or in Suspend it will still
6. racteristics Minimum Input Operating voltage 6V Maximum input Operating voltage 30V hard clamping will occur at 34V Deep Discharge shutdown threshold 11 2V Input current limit fuse protected Mini blade 25A Max Output Power 250 Watts 300 watts peak Deep Sleep Current Consumption lt 1 6mA Storage and operating temperature 40 to 125 degrees Celsius storage 40 65C operating MTBF 200 000 Hrs Efficiency Input 10 16V gt 95 all rails combined 50 load Input connectors M4 screw termina Output Connector ATX Power 24 pin Molex P N 39 01 2200 Unit shuts down when internal temperature sensor indicates gt 85C This value can be changed with software Maximum Power Characteristics Output Rail Current Max Current Peak Regulation lt 30 seconds 5V 15A 20A 1 5 3 3V 15A 20A 1 5 5VSB 1 5A 2A 1 5 12V 0 15A 0 2A 10 12V 12A see below 16A see below 2 When operating at lt 8V or gt 28V or extreme temperatures de rate by 25 50 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 Input V 12V out current 6 8V 8A 11 16V 12A 16A peak 8 11V 10A 12A peak 16 30V 12A 14A peak Support and warranty Standard Hardware Warranty 1Year US 2 Year EU M4 ATX User Guide
7. t to J3 marking J8 USB Motherboard ON OFF and THUMP Thump also available on J6 12345 NC 9 8 7 6 1 GND 6 To Motherboard ON OFF 2 GND 7 To motherboard ON OFF 3 USB D 8 Amplifier Thump 4 USBD 9 GND 5 Vcc 19 N C key 12345 C r3 J8 shown with cable harness connected to the g K H motherboard ON OFF header pin 7 and 6 NC 9 8 7 6 M4 ATX User Guide Page 2 http mini box com Embedded PC Solutions DIP Switch ON down se Off delay Hard off IMPORTANT Always use the All rails ON 5VSB Hibernate feature never use OFF OFF OFF pg standard PSU mode Standby as it can severely discharge your battery over ON OFF OFF p4 extended periods of time 5sec 1min AutoLatch 1 min OFF ON OFF P2 4min 41min AutoLatch NEVER ON ON OFF p3 1min 1min AutoLatch 1min NEVER use hard off NEVER OFF OFFI ON l settings unless you understand the P4 15min Hain risks of battery depletion Even with ON OFF ON p5 15min NEVER safety limits in place your battery OFF ON ON pg 30min imin might be not be able to start your engine Hard off NEVER keeps ON ON ON P7 2hour NEVER 3 j your 5VSB rail on at all times AutoLatch is active during the fist 60s of PC operation and only during the first 60 seconds For example If Ignition is turned ON and then OFF right away M4 ATX will latch Ign
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