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Intermediate Bus Architecture

The IBA, Intermediate Bus Architecture is not a data bus at all, but more of a power distribution scheme. The Intermediate Bus Architecture exists between the main power converter, say after a 48 volt power converter board but before the individual card Point-Of-Source [POS] regulators. All the circuit boards in the systems [chassis] receive the 48 volts as the IBA power bus. Each individual card than converts the 48 volt power into what ever source the board requires via individual POS voltage converters [Voltage Regulator Manufacturers].

The PMBus is used to communicate between different devices in power system architecture. The PMBus is a term used to describe the Power Management Bus.

I am not aware of any standard or specification which defines IBA.

In addition to the terms; Intermediate Bus Architecture, and IBA, I have also seen the term I-Bus used to imply the same thing.
Point-of-Source regulation is also called Point-of-Load regulation. Any voltage regulator can be a POL regulator; just place the device next to the point that requires the voltage.

IBC Modules; Intermediate Bus Converters

Artestn Technologies {Intermediate Bus Converters, Quarter-Brick, Eight-Brick, upto 450 watts}

Murata {Intermediate Bus Converters}

Ericsson {IBA non-regulated bus converters, 40-72 volt input, 480 watts}

Maxim {50 Watt Internal Bus Architecture Power Supply; IBA}

TDI {Intermediate Bus Converter Modules, Hot-Plug}

Tyco Electronics {Eight-Brick Intermediate Bus Converters}

Vicor {1 or 2 VI Chip BCMs mounted on a PCB, 1/4 Brick format. 600 watt, 3V to 48 volts}

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