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DOSA and PMBus initiative join forces

Posted: 18 Jan 2005 ?? ?Print Version ?Bookmark and Share

Keywords:power management bus? dc/dc? power architecture?

Tyco Electronics Power Systems and SynQor, the founding members of the Distributed-power Open Standards Alliance (DOSA), announced an alignment with the Power Management Bus (PMBus) initiative led by Artesyn Technologies Inc., as part of a migration effort to digitally-interfaced on-board dc/dc power architecture.

The DOSA architecture will include the PMBus protocol as well as new pinouts and functionality defined in consultation with leading customers and DOSA members. Also included will be standard software required to interface with the modules over the industry standard IC serial bus.

Members of DOSA, formed a year ago to promote standards for power converters, believe the tie-up will give the industry a low-risk migration path to a digitally-interfaced power infrastructure, while enabling customers to preserve their investment in existing designs.

"Digital interfaces to power modules will help reduce the design complexity of on-board power that is being experienced by some of our customers today", said Sabi Varma, vice president of marketing and R&D, Tyco Electronics Power Systems, in a statement. "However, minimization of risk and ability to design in standard parts with second-source capability remains a critical need for customers as well".

The PMBus initiative was formed last October by Artesyn and Astec Power to develop an open architecture communications standard for power systems control.

The DOSA-led efforts are expected to produce products in the second half of 2005. Standard enhanced pinout and functionality details will be released on the DOSA website as they are finalized.

- Spencer Chin

EE Times

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