Gresham Power Electronics 3U cPCI power supply

Ruggedised versions of the 300 W, 3U cPCI power supply are available in 24, 48 VDC and universal AC input versions with a conformal coating, making it suitable for extreme industrial, MIL/COTS and marine applications.

Fully compliant with the PICMG 2.11 power interface specification, the AC 3U 300R provides 300 W maximum in standard 3U x 8HP shelf space with interconnection via a Positronic 47-pin connector.

The cPCI power supplies are hot-swappable and parallel redundant enabled. Extra-high power density allows up to 40 A to be drawn from the +3.3 VDC output and 30 A from the +5 VDC output at 55ºC.

The two main outputs feature remote sense and OR-ing diodes allowing single wire current sharing for increasing output power or n+1 redundant operation.

The supply has control signals for overtemperature, overvoltage and overcurrent protection as well as power-good and inhibit for systems integration.

Input good, power fail and overtemperature front panel LED indicators are also fitted.

The supplies are industry-standard size, 3U x 8HP, and have the customary +5, +3.3 and ±12 VDC outputs. The AC input model has a universal input from 90-264 VAC and active power factor correction.

High efficiency and power density are achieved by employing independent parallel converter topology and synchronous rectification, low-profile magnetics and a high degree of surface mount assembly.