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PCI was the first universal, processor-independent computer bus that was adopted by all major microprocessor manufacturers. Hundreds of processors chipsets and thousands of peripheral chips utilize PCI. By leveraging low cost silicon and software developed for PCI, Compact PCI has become the world’s most popular modular open computer architecture designed for embedded applications.


Compact PCI systems have increasingly been used in aerospace, industrial, communications, military, and other applications. Unlike other electronic systems and setups, the PCI system requires a specific type of power supply— A Compact PCI system power supply (cPCI).


This power supply represents the leading cPCI AC/DC products in the industry. It can be used as a single power supply, as multiple units, or in parallel when there is a need for a higher power capability.


When paired with the DPCI series, the combination represents the DC input in the CPCI series’ AC input, completing the cPCI AC/DC combination.


The cPCI AC/DC power supply offers a highly reliable power source and high-density plug-in modules that meet the  PICMG® power interface specification required for Compact PCI systems.


The cPCI AC/DC power supply can deliver up to 500W of continuous power. Depending on the make and model, it can use the standard Positronic 47-pin connector and may incorporate active power factor correction or, to make it ideal in every application, with 85-264VAC universal or DC input models. The DC models cover a range from 18 to 72VDC.


Why are Compact PCI Power Supplies highly efficient?

The power supply’s high efficiency and power density come from the advanced component and circuit technologies that are used in manufacturing the Compact PCI power supply. These include the

  • Synchronous rectification – A technique used to improve the efficiency of rectification.
  • Low profile transformers – Used in small-sized yet powerful transformers designed for communication, media, and industrial applications.
  • SMT (Surface-mount technology) components – are mounted or placed directly on the surface of PCBs.


Moreover, Compact PCI Power Supplies can be designed in a way that they can meet unique load requirements for each different channel. The flexibility is achieved when two converters in parallel are used. One is for the +3.3V while the other is for the +5V.

Each channel can provide full load independently, providing engineers with the flexibility they need to meet different design requirements.


General Specifications

Although Compact PCI Power Supplies are available in different designs and models, the better quality supplies have the following features:

Overvoltage Protection:  This feature protects the load against induced overvoltage. It provides a trip-point that ensures the output voltage will not exceed 136% of nominal.

Overload Protection: This feature ensures that all outputs are safe from overloads and short circuits. Upon removal of a fault condition, the restoring of normal operations is automatic


Cooling: This feature meets the required 15 cfm, 400 lfm airflow.

Thermal Protection : This feature automatically shuts down the power supply when it overheats and allows recovery automatically as well.

Low Leakage: This feature indicates that a leakage current is less than 0.5 mA per unit.


Jasper Electronics products Headquartered in Anaheim, designs and manufactures power supplies including cPCI.


Jasper Electronic Compact PCI Power Supplies comply with the industry standard PICMG requirements. AC or DC input, 175W to 500W DC output. These designs are available in redundant 3U and 6U form factor.

  • AC/DC: 90-264Vac Input – 175, 200, 250, 300, 350 & 500 Watt Models – 3U & 6U x 8HP
  • DC/DC: 18-72Vdc Input – 175, 200, 250, 300, 350 & 500 Watt Models – 3U & 6U x8 HP
  • PICMG 2.11 Compliant – Active PFC – UL/CSA, NEMKO/TUV & CE Certified – RoHS Compliant
  • Current Sharing on 3.3, 5 & +12V Rails – Hot Swap & ORing Diodes N+1 Operation
  • Standard 47 Pin Output Connector With 38 & 32 Pin options Modifications To Suit Your System Requirements Are Our Specialty


Peninsula Technical Sales has expert knowledge of power supplies and would be happy to answer any questions regarding cPCI or other power supplies and help in the selection of the appropriate power supply for your specific need. Please call us at (650)965-3636, e-mail us at We invite you to visit our web site at


Peninsula Technical Sales represents electronic equipment manufacturers and is proud to offer our services online and to the following cities and their surrounding areas: San Francisco, Santa Clara, San Jose, Fremont, Sacramento, Milpitas, and Santa Rosa.