Power-One's Z-One Digital IBA Receives EP Magazine's Product of the

    Business Editors/High-Tech Writers

    CAMARILLO, Calif.--(BUSINESS WIRE)--Jan. 5, 2005--Power-One, Inc. (Nasdaq: PWER) announced that it has received a 2004 Product of the Year Award from Electronic Products Magazine for the Z-One(TM) Digital Intermediate Bus Architecture (IBA). Electronic Products will provide complete award details in their January issue and on-line at www.electronicproducts.com.
    Steve Goldman, Power-One's Chairman and CEO, commented, "I'd like to thank Electronic Products for presenting Power-One with this esteemed award. Z-One Digital IBA is the first board-level power system to digitally integrate power conversion and power management, providing customers with up to a 90% reduction in components, circuit-board traces, and development time."
    Mr. Goldman continued, "Z-One Digital IBA has gained rapid acceptance since our on-time September production release. A number of design wins have already been recorded in the communications segments, as well as high-level of interest in the server and data-storage applications, which are not traditional Power-One market segments. In December, we announced the early adoption and licensing by C&D Technologies of the `Z' technology. In addition to compelling technological advantages, we attribute our early success to a strategy of multiple-source availability combined with utilizing industry-standard I2C bus protocols for external communications. This strategy has positioned Z-One Digital IBA as the industry's first open-architecture power-management solution."
    Z-One Digital IBA(TM) board-level power combines many innovative operating concepts to achieve an unprecedented level of power-system integration. A multitude of parameters, such as output voltages, sequencing, and warning signal limits are user-programmed through a graphical user interface, communicated through an I2C bus, and stored in the Digital Power Manager.
    At system startup, this stored information is used to initialize up to 32 programmable Z-Point-Of-Load (Z-POL(TM)) converters. After system initialization, ongoing communications between the Digital Power Manager, Z-POL converters, and host system support intelligent operation. This advanced architecture utilizes Power-One silicon and intellectual property, with dozens of patent applications supported by hundreds of claim elements.
    Please visit www.power-one.com for further information. Power-One is one of the largest manufacturers of power conversion products in the world and is listed in the S&P 500. Products are sold to telecommunications and Internet service providers and equipment manufacturers. Power-One, with headquarters in Camarillo, CA, has global sales offices and manufacturing and R&D operations in China, Dominican Republic, Ireland, Norway, Slovakia, Switzerland, and the United States.

--30--WAM/la*

CONTACT: Power-One, Inc. Dennis Brondi, 805-987-8741, Ext. 4155 dennis.brondi@power-one.com

KEYWORD: CALIFORNIA INDUSTRY KEYWORD: HARDWARE TELECOMMUNICATIONS INTERNET E-COMMERCE PRODUCT SOURCE: Power-One, Inc.

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