Pixus Technologies

Power Backplanes

PS1250A 6Ux8HP cPCI

Technical Details

The PS1250 is a 6.5U (or 6U) tall, 8HP wide power backplane. The PS1250 is a backward compatible version of the PS1250 with two additional power bugs. The PS1255 has 1 less +5 volt power bug than the PS1250A. The PS1250 may be used with the PS1300 or PS1400 series of modular CompactPCI backplanes, or in any other application where large supply currents are required.The PS1250A will accept 1 Positronic type 500W power supply. Either AC or DC power is supplied to the power plane by means of a three contact Mate-n-Lok connector.

There are 3 ATX-style power connectors on this power plane for distribution of regulated power to the modular CompactPCI backplanes. The connectors used are Molex “Mini-Fit Jr.” series headers or compatible connectors.  These are the same connectors that are recommended for ATX style PC power supplies.

CompactPCI backplanes are connected to the power backplanes by means of cable assemblies (PS1600) with mating “Mini-Fit Jr.” receptacles at either end.  These cable assemblies provide +5V,  +3.3V, +12V, -12V, GND and control signals between the two backplanes. The PS1250A also has a row of power taps for use when large supply currents are required, or ATX connectors cannot be used. One power backplane can supply power to one or more CompactPCI backplanes, subject to the current requirements of the CompactPCI backplanes.