Power > CPA & CPD Series
CPA Series | 500 Watt | 1U Rack AC-DC Power Supplies | Melcher Power
CPA Series | 500 Watt | 1U Rack AC-DC Power Supplies | Melcher Power

CPA & CPD Series

Input: 85-264Vac
Outputs: 3V3, 5V, 12V, 12V dc
Power: 250-500 Watt
Tamb: -25°C to +50°C
Dims: 3U or 6U CPCI modules
UL / CE EN60950 Approved

Make an enquiry

Make an Enquiry

  • This field is for validation purposes and should be left unchanged.
have a question? Contact us now


The CPA and CPD Series are highly reliable power supplies for CompactPCI¨ systems, which are increasingly used in communications, industrial, military, aerospace, and other applications. These power supplies offer high power density in plug-in modules that meet the requirements of the PICMG¨ power interface specification for CompactPCI¨ systems.

The converters use the patented EDGETM technology and provide important advantages such as flexible output power, extremely high efficiency, excellent reliability, full input-to-output isolation, negligible inrush current, hot-swap capability, soft start, and overtemperature protection. The inputs are protected against surges and transients occurring on the source lines and cover an operating input voltage range from either 90 to 264 VAC or 36 to 75 VDC. Voltage suppressor diodes protect the input against

The outputs are protected against continuous overload, open-circuit, and short-circuit. Full n+1 redundant operating mode is made possible by integrated ORing FETs/diodes. When several converters are connected in parallel, a single-wire connection between converters ensures current sharing.

The converters are designed as two or three separate forward converters with fixed switching frequency and synchronous rectifiers at their output. LEDs on the front panel and various warning signals display the status of the converter. The aluminum case acts as a heat sink and as an RFI shield. It is designed for vertical insertion into 19″ rack systems, but it can also be mounted in any other position, as long as the necessary airflow is ensured. The connector is a 47-pin type from Positronic or similar.

Several options are available to meet different requirements.



Click on the link below for an instant download.

  • CPA & CPD Series Datasheet

We would love to know more about the problem you are trying to solve

Our experts are on hand to help you find the best solution!

LET’S MAKE THIS EASY. CALL 01929 555 700

why choose relec?
  • Faster

    Our aim is to get back to you with an initial response within the hour.

  • Attention to detail

    We pride ourselves on getting you the right product, at the right price and on time.

  • New ideas

    We are constantly looking for latest technology and products for your applications.

  • Beyond standard

    It’s not just about the product.  Our service goes way beyond the norm.

  • Easy

    We want to make your life as simple as it can be. Call us to find out what we can offer.

sign up for our newsletter

Enter your email address below

  • This field is for validation purposes and should be left unchanged.