Telematics and Automotive Infotainment Technologies



                     Release of Software Devleopment Kit for the P2140 (4/11/07)

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The most sophisticated regulator ever!

The most powerful and intelligent regulator ever built! USB connectivity to the PSUmoni(TM) power supply monitor applcation takes the guesswork out of installation, setup, and operation. Real-time gauges show exactly what's going on under the hood! "Soft jumpers" let you tweak any parameter to your heart's content. Firmware updates via the USB port allow you to keep your product updated with the latest firmware with no special programming hardware required. There is not other product like it on the market!

Includes PSUmoni(TM) Power Supply Monitor application



  • Dual Output Regulator for automotive, RV, truck, taxi, and marine applications
  • Total output power up to 250 Watts (24Vin/20Vout) or 185 Watts (12Vin/20Vout)
  • Compatible with 12V OR 24V systems (auto ranging, no jumper changing)!
  • Jumper selectable main output of +12V/+18.5V/+20V
  • Primary output capable of up to 11 amps at +12V (130 watts) or 7.5 amps @ 20V (150 watts)
  • Jumper selectable secondary output of +12V/+13.5V or +5V at up to 3 amps (36 or 15 watts)
  • Optional 3rd output using CNX-P5V/15 watt regulator
  • Includes sturdy aluminum chassis and variable speed fan.
  • Survives Engine Cranking under full load over entire temperature range
  • Includes sophisticated Startup/Shutdown Controller (SSC) with USB interface to your CarComputer
  • Firmware upgrdable using USB port. No PIC programmer required!
  • Low battery monitor (user settable threshold) prevents drained battery, even during Standy/Sleep
  • "Anti Thump" delayed  remote control (DLYON) for audio amplifiers (user settable delay time)
  • "Deadman Timer" to cut power if your system remains in sleep/standby for too long (user settable time)
  • Remote "Pulse Start" from wireless device or car alarm/remote start system
  • Over current protection on both outputs with graceful forced shutdown of main output
  • Powers both your computer (PC or Mac) AND your screen or USB devices
  • Compatible with Mac mini including startup/sleep mode
  • Compatible with Aopen Pandora Mini PC
  • Compatible with +12V or +19V Pentium-based systems such as Travla, Sumicom, Xenarc SC3 & SC8, Commell, Cappuccino, EZgo, and many others.
  • Full, safe support for Windows Standby mode including auto shutdown if PC fails to shutdown
  • Over voltage surge suppression on battery input for protection of harsh automotive environment
  • User replaceable fuse on battery input to protect your car from internal short circuits
  • Very compact design measuring 4.6" x 3.25" x 1.75" (L x W x H) or 117mm x 83mm x 45mm.

Finally, a product that takes the guesswork out of design, setup, and operation lets you SEE what's going on with all of the critical voltages, currents, and power measurements in your system! You can view real-time readings of important parameters and tweak your system for optimal performance in YOUR car with the included PSUmoni(tm) Power Supply Monitor windows application. The PSUmoni shows you what it would take 3 different external instruments to see. No need to buy/connect a digital voltmeter or ammeter to see what your CarPC/Mac is drawing from your car battery. The PSUmoni gives you this information IN REAL TIME! The P2140 is by far the most intelligent power regulator on the market.

The P2140 is compatible with all of the latest mini PC/Mac systems including Mac mini, Intel Mac mini, Aopen Pandora Mini PC, Xenarc SC3, Xenarc SC8, Sumicom, Cappuccino, IWill, EZgo, and many others. The P2140 can also be used to power laptop computers or motherboards which include an onboard DC-DC regulator such as the Commell and VIA TC6000/10000.

FLEXIBILITY is the key word for the P2140. Using the PSUmoni interface you have full control over many of the critical operating parameters that used to drive you nuts!

  • Shutdown Delay Time
  • Deadman Timer
  • DLYON Time
  • Bootup Lockout Time
  • Shutdown Lockout Time
  • Low Battery Detection Threshold

In addition you get a REAL-TIME readout of

  • Battery (input) Voltage
  • Battery (input) Current
  • Input Total Power Consumption
  • Primary Output Voltage
  • Primary Output Current
  • Primary Output Power
  • Secondary Output Voltage
  • Secondary Output Current
  • Secondary Output Power
  • Total Output Power (Primary plus Secondary)
  • Overall Efficiency (Output Power/Input power)
  • Temperature

There are also digial indications of:

  • Ignition Status (On/Off)
  • Pulse Start Status (On/Off)
  • Fan Status (OK/Fail/Disabled)
  • DelayON Status (On/Off)
  • ACPI (Power Button) Status (On/Off)
  • Power Good (Regulator OK) Status (OK/Fail)
  • PS_ON (Regulator control) (On/Off)
  • USB Connection Status (Connected/Not Connected)

"Soft Jumpers" allow you to control:

  • Standby/Hibernate
  • Secondary Output ON (Ignition/DLYON)
  • Secondary Output OFF (PriOut/Ignition)
  • Fan (Enable/Disable)
CNX-P2140 Specifications*
Input Voltage Range +7.5VDC to +34VDC (ie +12VDC or +24VDC Systems)
Input Voltage Range Selection Fully Automatic (no jumpering requried)
Primary Output Voltage +12V, +18.5V, +20V Jumper Selectable
Primary Output Current (with fan) 11 amps @ +12V output (130 watts)
7.5 amps @ +18.5V output (135 watts)
7.5 amps @ +20V output (150 watts)
Primary Operating Efficiency ~93% at loads > 2 amps
Secondary Output Voltage +5V, +12V, +13.2V jumper selectable
Secondary Output Current (with heatsink) 3 amps @ +5V output (15 watts)
3 amps @ +12V output (15 watts)
Idle Current 60mA
Operating Temperature Range -10°C to +60°C
Thermal Protection Automatic shutdown @ > +60°C
Fan Auto-sensing for +12V or +24V system (no jumpering required)
Startup/Shutdown Controller (SSC) Intelligent state-machine based SSC
Processor PIC 18F4455 flash microprocessor with full speed USB
Firmware Upgrade Via USB port. Download firmware upgrades from website
SSC Interface Full Speed USB 2.0
SSC Application Interface PSUmoni 2140 Windows application

*specifications subject to change without notice

The CNX-P2140 is a 185+ watt intelligent DC-DC power regulator designed to provide safe, reliable power to today's newest CarPCs......including the Mac mini classic, Intel Mac mini, Aopen Pandora, Xenarc, Cappuccino, and many other Pentium P4-based systems!

The P2140 proivdes two outputs. The primary output is jumper selectable for 12V, 18.5V, or 20V operation and can provide up to 11 amps (130 Watts) @ 12V, or 7.5 amps (150 watts) @ 20V. The secondary output is jumper selectable to provide either +12V to power your LCD screen  or +5V to power USB devices (such as the Audigy 2NX sound USB sound card) with up to 3 amps (15 Watts). The P2140 can accept battery input as low as 7.5 volts under full load during cranking while providing a well-regulated output so that your CarComputer does not crash, or as high as 34V in a +24V system).

The P2140 includes all of the sophisticated features of its predecessors (P1260, P1280, 1290, and P1900) such as Startup/Shutdown controller, Pulse Start (remotely start the P2140 with door locks, car alarm, or wireless device), and DelayON (prevents speaker "thump" during booting). The P2140 fully and safely supports "Standby" mode and will automatically shut itself down (by detecting excess current drain) if the CarComputer fails to properly go into Standby mode. If the Deadman Timer is enabled the P2140 will automatically shut itself down after a user selectable time (normally 72 hours) if the unit remains in Standby/Sleep too long. Mac mini users will appreciate the Deadman Timer since most Macs require Sleep mode instead of hibernate.

The P2140 is also designed to power larger systems that demand higher power, such as P4-based motherboards with full sized hard drives. The P2140 is fully compatible with the Travla C137 (90 watt and 120 models), the C138 (90 watt and 120 watt models) as well as the newer C158 (90 watt and 120 watt models) cases.!

In addition, the P2140 can be used with the Mac mini, Sumicom, Xenarc, IWill, and Cappucino models that require an 12v, 18.5v, or 20v power source.

P2140 Frequently Asked Questions

The P2140 Installation Manual and PSUmoni application software are available now on our Support Page.

Suggested retail price $149.99USD.

NOTE: *The CNX-P2140 is designed to operate with a “nominal” +12VDC or +24V input from a car battery or alternator. This input voltage can vary significantly from a low of +7.5VDC during engine cranking at cold temperatures, to +34VDC during jump starting or abnormal alternator “spikes”. The CNX-P2140 can operate under full load with an input voltage of less than +10.5VDC for the duration of engine cranking. It is NOT designed to take a continuous input voltage of less than +12VDC for an extended period of time while under heavy load. If the input voltage drops below the nominal low battery threshold (~+10.5VDC) for more than 10 seconds, the CNX-P2140 shutdown controller will go into “Forced Shutdown” mode which will turn off the CarPC after a 30 second delay. Since the user has control over low battery threshold, care must be taken to protect the P2140 from prolonged operation below +10.5V.

Copyright 2006 CarNetix