Distributed-power Open Standards Alliance

Press Release

Tyco Electronics Power Systems and SynQor announce Alignment with PMBus™ Initiative for Enhanced DOSA-Led On-Board Digital Power Management Architecture

DOSA-Led effort to enable Standard Digital Interfaces to On-Board DC/DC Power Converters

January 14 , 2005

Dallas, TX –Tyco Electronics Power Systems (NYSE: TYC) 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 (NASDAQ: ATSN), and a number of power-supply and semiconductor companies, as part of a larger DOSA-led initiative to migrate to a 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 I2C serial bus. These efforts will serve to migrate the industry to a new digitally-interfaced power infrastructure in a measured and low-risk manner, allowing customers to preserve their investment in existing designs while moving to the benefits of a digital control interface.

“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, Marketing and R&D, Tyco Electronics Power Systems. “However, minimization of risk and ability to design in standard parts with second-source capability remains a critical need for customers as well. This effort will provide a graceful transition to Digital Interfaces while preserving the considerable design expertise investment our customers have made”.

“DOSA has endorsed and will adopt the Power Management Bus protocol in order to reduce the uncertainty and maximize the benefit to our customers as they transition to digital control, programming and monitoring of DC/DC modules”, said Joe Coupal, Executive Vice President of Marketing and Sales, SynQor, Inc. “Our customers want an open industry standard that will facilitate multiple, compatible product sources. Current and emerging solutions only offer proprietary communication formats. DOSA’s decision to adopt the PMBus protocol should solidify its position as the de facto industry standard for power systems control.”

The DOSA-led efforts are expected to result in products in the second half of 2005 time frame. Standard enhanced pinout and functionality details are being developed in cooperation with major customers and industry partners, and will be released on the DOSA website as they are finalized.

DOSA was formed to ensure future DC-DC product compatibility and standardization. The goal of the alliance is to establish standards over a broad range of power converter form factors, footprints, feature sets and functionality for point-of-load (POL) and isolated applications. For further information, visit the DOSA website at


Tyco Electronics Power Systems, a business unit of Tyco Electronics, is a leading global provider of innovative, reliable power supply products including AC-DC and DC-DC switching power supplies, batteries and complete communications and energy power systems. Tyco Electronics Power Systems also offers custom design, engineering, installation and technical support services to its customers./p>

SynQor is a leading provider of high efficiency dc/dc converters for distributed power architectures. SynQor’s products exceed the exacting performance, quality, and reliability requirements of its world-class customers. SynQor serves the converging telecom and datacom markets with their high-efficiency PowerQor, DualQor, BusQor and NiQor families of dc/dc converters. SynQor’s products are designed to meet the challenging demands of OEM engineers building today’s communications infrastructure hardware. SynQor is a privately owned company headquartered in Boxborough, Massachusetts with offices in Dallas Texas, Europe, Singapore, Korea, China and Japan. More information is available on the Company’s website at

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