CarNetix PSU-PC19 DC Installation Manual

CarNetix PSU-PC19 V2.0 Installation Manual

CarNetix PSU-PC19 DC-DC Power Supply

Installation and Operation of the PSU-PC19 with the Xenarc SC8

Version 1.0

(applies to Version 2.0+ hardware)

February 1, 2006

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CarNetix PSU-PC19 V2.0 Installation Manual

Table of Contents

1.0 PSU-PC19 Introduction..................................................................................................................4

1.1 Introduction................................................................................................................................. 4

1.2 Primary Output Power................................................................................................................ 7

1.3 Secondary Power Output............................................................................................................ 7

Using the Secondary Output for +5V devices.............................................................................. 7

Using the Secondary Output for +12V devices............................................................................ 7

1.4 Startup/Shutdown Controller (SSC) Overview........................................................................... 8

2.0 Installing the PSU-PC19.................................................................................................................9

2.1 Before You Begin....................................................................................................................... 9

2.2 Setting the Jumpers.....................................................................................................................9

2.2.1 Setting JP1 Jumpers........................................................................................................... 10

2.2.2 Setting JP2 (Secondary Output Voltage)........................................................................... 11

2.2.3 Using JP3 ACPI Relay Output .......................................................................................... 12

2.2.4 Setting JP4 (Secondary Output Control) ........................................................................... 12

2.2.5 Setting JP5 (Secondary Power Input Select) ..................................................................... 13

2.2.6 Setting JP6 (Primary Output Voltage Selection)............................................................... 14

2.3 Connecting the Wiring.............................................................................................................. 14

2.3 Connecting the Wiring.............................................................................................................. 15

2.4 Optionally Connecting the Xenarc LCD Screen.......................................................................18

3.0 Using the Pulse Start Feature........................................................................................................ 20

3.1 Pulse Start Connections............................................................................................................ 20

3.2 Pulse Start Operation................................................................................................................ 20

3.2.1 What is a pulse?................................................................................................................. 20

3.2.2 Starting the PSU with a pulse............................................................................................ 20

3.2.3 Stopping the PSU with a pulse .......................................................................................... 21

3.2.4 Prolonging the Shutdown Delay State............................................................................... 21

3.2.5 Shutting down the PSU with double pulses....................................................................... 21

3.2.6 Ignition Override................................................................................................................21

4.0 Startup/Shutdown Controller........................................................................................................ 22

4.1 Hibernate/Standby Operation ................................................................................................... 22

4.2 SSC Operation States................................................................................................................22

4.2.1 Idle State............................................................................................................................ 22

4.2.2 RunDelay State.................................................................................................................. 22

4.2.3 Bootup Lockout State ........................................................................................................ 23

4.2.4 Run State............................................................................................................................ 23

4.2.5 Shutdown Delay State........................................................................................................ 23

4.2.6 Shutdown Sequence State..................................................................................................23

4.2.7 Forced Shutdown State......................................................................................................24

4.3 Fault Indicator LEDS................................................................................................................ 24

5.0 Conditions of Use ......................................................................................................................... 27

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CarNetix PSU-PC19 V2.0 Installation Manual

Summary of Notices & Disclaimers

CarNetix limited warranty is contingent upon proper and normal use and installation, and
does not cover damage due to external causes, including but not limited to, accident,
problems with electrical power, improper installation techniques or materials, liquids,
chemicals, oxidation, corrosion, exposure to the elements, servicing not authorized by
CarNetix, usage not in accordance with product instructions or specifications, failure to
perform required preventive maintenance, and problems caused by use of parts and
components not supplied by CarNetix.

CarNetix makes no express warranties or conditions beyond those stated in this warranty
statement. CarNetix disclaims all other warranties and conditions, express or implied,
including without limitation implied warranties and conditions of merchantability and fitness
for a particular purpose. Some states do not allow limitations on how long an implied
warranty lasts, so the above limitation may not apply to you.

CarNetix does not accept liability beyond the remedies set forth in this warranty statement
or liability for incidental or consequential damages, including without limitation any liability
for products not being available for use or for lost data or software.

CarNetix full warranty and return policies are stated in Section 5 at the end of this
document.

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CarNetix PSU-PC19 V2.0 Installation Manual

1.0 PSU-PC19 Introduction

NOTE: This manual and feature set apply to Rev 2.0 and above of the printed circuit board (PCB).

The PCB revision number is printed on the top of the PCB in white lettering. Please make sure you

are using the correct manual for the correct product revision.

1.1 Introduction

The PSU-PC19 is a 140 watt intelligent DC-DC power regulator designed to provide safe, reliable
power to the Xenarc SC8.

Figure 1 CarNetix PSU-PC19

The PSU-PC19 provides two outputs. The primary output is jumper selectable for 18V, 19V, or 20V
operation and can provide up to 6.32 amps (125 Watts @ 20V ). The secondary output is jumper
selectable to provide either +12V to power your Xenarc LCD screen, or +5V to power USB devices
(such as the Audigy 2NX sound USB sound card or USB powered hubs) with up to 3 amps (15

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CarNetix PSU-PC19 V2.0 Installation Manual

Watts). The PSU-PC19 can accept battery input as low as 7 volts under full load (140 watts) during
cranking while providing a well-regulated output so that your Xenarc SC8 not crash.

A third output can be added to the PSU-PC19 by installing the optional CNX-P5V regulator. This
will allow the PSU-PC19 to power your Xenarc SC8 (Primary Output), your Xenarc LCD screen
(+12V Secondary Output), and your USB devices (+5V from the P5V) simultaneously!

The PSU-PC19 includes all of the sophisticated features of its predecessors (P1260 and P1280/90)
such as Startup/Shutdown controller, Pulse Start (remotely start the PSU-PC19 with door locks, car
alarm, or wireless device), and DelayON (prevents speaker "thump" during booting). The PSU­PC19 fully and safely supports "Standby" mode and will automatically shut itself down (by
detecting excess current drain) if the Xenarc SC8 fails to properly go into Standby mode.

The PSU-PC19 includes a power cable kit for “plug and play” installation with the Xenarc SC8
computer. This simplifies the installation and provides a safe, reliable connection for your Xenarc
SC8.

Figure 2 PSU-PC19 Power Cable Kit

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CarNetix PSU-PC19 V2.0 Installation Manual

8V/+19V/+20

5V/

PSU-PC19 V2.0 Features

• 140 Watt Dual Output Regulator

• Jumper selectable main output of +18/+19/+20V

• Jumper selectable secondary output of +12V/+13.5V or +5V

• A THIRD output of +5V/15W can be added by installing the optional P5V regulator.

• Survives Engine Cranking under full load over entire temperature range

• Includes sophisticated Startup/Shutdown Controller

• Includes sturdy aluminum chassis with variable speed fan suitable for car environment

• Field upgradeable flash microprocessor

• Low battery monitor prevents drained battery, even during Standby

• “Deadman Timer” automatically exits Standby and turns the unit off after 3 days if jumper is set.

• "Anti Thump" delayed remote control for audio amplifiers

• 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 Xenarc SC8 AND your Xenarc LCD screen or USB devices

• 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

• Now includes an internal ACPI isolation relay to provide full compatibility with the ACPI/power switch interfaces with

Xenarc PCs. No need for an external relay!

• Now includes “plug and play” cable (CNX-CA-XSC8) for connecting power and ACPI (power button) to Xenarc SC8.

+12V Battery

Ignition

Pulse Start

GND

(Red)
(Red)

(Blk)
(Blk)

(Yel)

(Blue)

(Red)
(Red)

(Blk)
(Blk)

-

Figure 3 PSU-PC19 Block Diagram

(Brn)
(Wht)

(Grn)
(Blu)
(Grn)

(Blk)

Primary Output
+1

GND

Secondary Output
+

+12V/+13V

Not used

ACPI (non-isolated)

DLYON

ACPI (isolated)

V

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CarNetix PSU-PC19 V2.0 Installation Manual

1.2 Primary Output Power

The PSU-PC19 Primary Output can provide +18V, +19V, or +20V (note: these voltages have
actually been designed to be about .5V higher to overcome wiring losses in a typical installation) via
jumper selections on the PCB. The total current available on the primary output is 6.32 amps (120
watts at +20 Volts). The primary output of +19V is used to power your Xenarc SC8

1.3 Secondary Power Output

The PSU-PC19 also provides a Secondary Output of either +5V, +12V or +13V via jumper
selections. The total current available on the Secondary Output is 3 amps at +5 Volts, or about 1.3
amps at +12V (15 watts total). If you exceed the current or power limit of the secondary output it
will automatically shut down to protect itself from damage.

Note: a third output of +5V @ 3 amps (15 watts) can now be added to the PSU­PC19 by installing the optional CNX-P5V regulator. This will allow the PSU­PC19 to simultaneously power your Xenarc SC8, Xenarc LCD screen, and USB
devices. Download the CNX-P5V Installation Manual from our website for
instructions and details.

Using the Secondary Output for +5V devices

The +5V selection is typically used to power USB devices such as external USB sound cards (ie
Audigy 2NX) or powered USB hubs. The +5V output can provide up to 3 Amps. When jumpered
for +5V operation, the secondary output does not de-rate the total power available on the primary
output (see +12V Secondary Output below).

Using the Secondary Output for +12V devices

When the secondary output is jumpered for either +12V or +13V operation it derives its input from
the primary (+19V) output. Since the total power available from the primary output is 120 Watts,
when using the +12V/+13V secondary option, the primary output must be de-rated by current
consumed by the secondary output.

The secondary output can be jumpered to provide +12V at up to 1.3Amps for powering your
Xenarc LCD screen or other low powered +12V devices. However, since the Xenarc LCD screens
come with a cigarette lighter adapter using the secondary output to power the screen is optional.

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CarNetix PSU-PC19 V2.0 Installation Manual

1.4 Startup/Shutdown Controller (SSC) Overview

The PSU-PC19 contains a sophisticated, PIC microprocessor-based Startup/Shutdown Controller
(SSC). Its main job is to automatically start and stop your Xenarc SC8 when you turn ON or OFF
your ignition switch. However, it is also designed to help prevent HDD (hard disk drive) problems
by inadvertently removing power while your Xenarc SC8 is accessing the drive. The timing of the
bootup and shutdown signals are carefully designed to help prevent unwanted booting or shutdown
if the user turns ON or OFF the ignition while the Xenarc SC8 is already in the process of booting or
shutting down. Once the Xenarc SC8 begins its bootup or shutdown process, the SSC enters a
“bootup lockout” state that prevents the user from attempting to reverse this process until it has
completed.

In addition, the SSC provides control and monitoring to allow the Xenarc SC8 to safely enter
“Hibernation” or “Standby Mode”. These modes are selected jumpers on the PSU-PC19 and are
described in more detail in Section 3.

The SSC also contains a battery monitor which will shut the PSU-PC19 down in the event the
battery voltage drops below approximately 10.6 volts. This will help prevent deep discharge and
damage to your battery.

The SSC has a “Pulse Start” input that allows you to start the PSU-PC19 by using an externally
applied “pulse” from a device such as your car alarm, remote starter, or wireless device.

The various operating states of the SSC are described in more detail in Section 7 of this manual.

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CarNetix PSU-PC19 V2.0 Installation Manual

2.0 Installing the PSU-PC19

The following section is a summary of the installation of the PSU-PC19 and Xenarc SC8 computer.

2.1 Before You Begin

Before you begin the installation, make sure you take the time to read through these instructions.
The PSU-PC19 is a sophisticated, microprocessor-based device. Please read these instructions
carefully and contact us either in our Support Forum (
(

[e-mail]) if you have any questions or problems.

It is assumed that you have a basic to advanced understanding of electronics. It would be helpful,
and is highly recommended (especially if you plan to get much further involved in CarPCs) that you
purchase, as a minimum, a simple VOM (volt-ohm meter) or DMM (Digital Multi-Meter). These
devices are inexpensive (starting around $20) and will save you and me a great deal of time. They
can be purchase over the web or at your local retail electronics store (Radio Shack, Home Depot,
some hardware stores, some auto parts stores).

Installation of the PSU-PC19 consists of :

• Setting the Jumpers

• Connecting the Wires.

www.carnetix.com/forum) or via email

2.2 Setting the Jumpers

It is very important to set the jumpers before applying power to the PSU-PC19. The location and
function of the jumpers is presented below. More detail on the specific operation of each jumper
selectable function appears later paragraphs.

Jumper Functions

JP1 Pulse Start Input
Deadman Timer
Hibernate/Standby
Shutdown Delay Time
JP2 +5V/+12V/+13V Select
JP3 ACPI Relay Output
JP4 Secondary Output Control
JP5 Secondary Output Source
JP6 +18V/+19V/+20V Select

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