PCI-104 PC104p PC104 pc/104+ Power Supply Power converter by Dynamic Engineering

150 DuBois St. Suite #3
Santa Cruz, Calif. 95060
(831) 457 8891 (831) 457 4793 Fax
Est. 1988

PC104pPWR28 : 14-34V based Power supply
PCI-104. PC104p, and PC104 stacks.

PC104pPWR28 rendition - PC104pPWR12 shown. PC104pPWR28 main differences are on the rear of the card

The PC104pPWR28 power supply provides for the +5, +3.3, +12, minus 12 and minus 5 from a 28V supply, battery etc. Each rail is fuse protected. The supply uses switching technology to provide high efficiency coupled with low pass filtering to provide low noise and fast response to transient loads.

Aircraft and other systems use 28V power to operate equipment. The PC104pPWR28 has a wide input range to operate with 14 - 34 V power. It is possible to operate at voltages between 12 and 14, however in this range the PC104pPWR12 is recommended. The reference power is converted to 12VDC. The 12VDC is fuse protected and tied to the PC104 stack connection. The pre fuse 12V power is also connected to the 5V, 3.3V, -5V and -12V power supplies. All rails are transorb and fuse protected on the output side of the supply.

The PCI VIO is programmable allowing 5V or 3.3V PC104p cards to be used. Many PC104p and PCI-104 cards are universal and can work with 3.3 or 5V PCI definitions. A shunt is provided for the user to select 5V or 3V operation.

The power is routed from the power supplies to connectors with mini-planes each of which is rated for more than the maximum draw. The total power dissipation is limited to the external power supply capabilities. Each rail can draw to the maximum to cover situations where the power utilization is not balanced. 8A max current on 5V, 8A max current on 3.3V, 4A max current on -12, 4A from +12V. The VIO is selected from the 3.3 or 5V supply after the fuse and is included in the 8A available on those rails.

The default is for the -12V and -5V then 3.3 then 5 power rails to be energized. The rails are delayed relative to one another by several mS to reduce the inrush current requirement. If you require 5V before 3 or coincident power etc. contact Dynamic Engineering. We can do a special build with the delay programmed for your requirements.

The input power is overvoltage protected with a transorb located near the power switch. Power is connected to the board through a right angle connector. 4 28V and 4 ground pins are used to allow for a flexible cable internal to the PC104 chassis. Cables are available with the PC104pPWR28 mate for easy connection to your power connector.

LEDs are provided after the fuse on each rail.

If you have custom requirements please call or e-mail us with the details.

PC104pPWR28 Features

Size	Standard PCI-104. PC104p, PC104

Voltages Supplied	+5, +3.3, +12, -12V -5V, and VIO

VIO	VIO is programmable by the user via shunt to 5V or 3.3V.

Protection	Self Healing fuses on each rail, over-voltage protection

Indicators	LEDs are provided on each power rail 3.3V, 5V, 12V, M12V, M5V

Cabling	Pre-wired mate to PC104pPWR28 is available for ease of connection within your system.

Thermal	The PC104pPWR28 is based on switching power supplies for minimal heat dissipation and maximum power transfer to the PCI-104, PC104p or PC104 stack. Efficiency is a function of load. In many cases no cooling will be required, in high load, and high temperature or high altitude systems cooling requirements should be considered. The PC104pFAN board can provide forced air cooling for the PC104 stack. The PC104pPWR28 has heavy internal planes - 4oz copper to handle the current and spread the heat. The ground planes are tied to the PC104 mounting holes to make use of the PC104 stack for cooling to the external chassis wall. The PC104p Chassis is designed to transfer heat in the PC104 spacers to the end plates of the chassis.

PC104pPWR28 Benefits

Power	Energize all of the rails in your design with a single power supply.

Price	The PC104pPWR28 is cost effective, and ready to use. Just plug in and attach the supplied cable. Low system cost due to easy installation, easy to achieve cooling requirements, and reliability keep your installed price low. Quantity discounts are available.

Warranty	1 year warranty

Ease of Use	The PC104pPWR28 is easy to use. A Plug and Use interface to the PCI-104, PC104p or PC104 stack.

Availability	We work to keep the PC104pPWR28 in stock. Send in your order and in most cases have your hardware the next day - delivered to you via FedEx. Current status : 11/21/07 in layout.

Size	Complies with standard PCI-104, PC104p and PC104 dimensions

PCI-104, PC104p, PC104 Compatibility	The PC104pPWR28 is PCI-104, PC104p and PC104 compliant per the specification. All Dynamic Engineering PC104p Modules are compatible with the PC104pPWR28.

PC104pPWR28 Ordering Options