Xinwei Configures Power-One's Z-One(TM) Digital IBA for ''Big Smart'' Wireless in Under 10 Minutes.

CAMARILLO, Calif. -- Power-One, Inc., (Nasdaq: PWER) today announced details on the Z-One(TM) Digital IBA design win for Beijing Xinwei Telecom's "Big Smart" SCDMA wireless service. SCDMA incorporates advanced technologies, such as smart antenna, software radio, and synchronous wireless access protocol, to target a Chinese market projected to grow from 3 million users in 2005 to over 20 million by 2007. This extremely-complex application requires six different voltages, from 1.3 to 3.3VDC, with peak currents approaching 60 amps. Pictures of this application are available at http://www.power-one.com/products/Z-applications.html.

Xinwei's Chief scientist, Dr. Guanghan Xu commented, "Using the Z-Series graphical user interface, we were able to configure a power system in less than ten minutes. This is extremely impressive considering that the diverse range of functionalities we implemented included paralleling, turn-on cascading, and fault management. Z-One Digital IBA saved weeks of design time compared to analog power management. The complex power requirements of our base station control board, combined with our need for on-the-fly reconfiguration, would have been extremely difficult to support without Power-One's revolutionary Z-One Digital IBA."

Steve Goldman, Power-One's Chairman and CEO, commented, "We are very excited about the revenue-growth potential for this application. In November, it was announced that China's two fixed telecom network operators, China Netcom and China Telecom will be launching SCDMA networks. Xinwei's growth potential has impressed others as well; they were ranked fifth in the first Deloitte Technology Fast 50 China Program and included in Red Herring's list of the top 100 private companies in Asia."

Mr. Goldman continued, "Xinwei's application is another excellent example of the extraordinary performance, and savings in time and cost, provided by Z-One Digital IBA. Although their control board uses eleven Point of Load (POL) converters, they only have to inventory one Z-Series POL part number due to the wide range of programmable attributes. In addition, a single Digital Power Manager controls all eleven POLs, their dc-dc front end, and I2C communications with their host system. This advanced functionality is only obtainable by using standard Z-Series components, available from Power-One and other Z-Alliance (TM) members."

The industry-standard I2C-compatible Z-7000 Series utilizes an extremely-scalable architecture that employs many revolutionary operating concepts. An extensive range of parameters, such as Vout for each POL, is user-programmed via I2C protocols, or through a graphical user interface, and stored in a Digital Power Manager. At system startup, the Digital Power Manager uses this stored information to initialize up to 32 POLs. After system initialization, ongoing bi-directional communications facilitate intelligent power system operation. Hardware-configurable Z-1000 POLs are also available for customers preferring power management without programming.

About SCDMA

SCDMA -- also called Big Smart wireless phone service -- has been developed primarily by Xinwei, which has partnered with China Netcom, China Telecom, China Unicom and China Railcom to deploy services in rural areas. According to China's Ministry of Information Industry (MII), SCDMA service has been deployed in 106 cities of 16 provinces across China. SCDMA is a highly efficient technology, requiring much fewer base stations to cover the same geographical area than the existing technology currently deployed in China. SCDMA operates in both the 400 MHz and 1800 MHz spectrum, with up to 3-kilometer base station (1800 MHz) coverage, 95 percent success ratio in base station switching, a 100 kilometer/hour mobile speed limit, and 0.05W transmission power.

About Xinwei

Beijing Xinwei Telecom Technology Inc., founded in 1995, was jointly established by CATT and Cwill, with sole intellectual property rights for the SCDMA Wireless Local Loop System. Xinwei has developed 1800 MHz SCDMA local mobility, 400 MHz SCDMA WLL for rural communication and MC-SCDMA for broad band wireless data access. Xinwei formed business units for wireless communication product development, manufacturing, sales, engineering, services and customers support. Leading technologies, strong research and development ability and a complete sales network push Xinwei forward to join world class companies in the wireless market. For more information regarding Xinwei, please visit www.xinwei.com.cn.

About Power-One

Power-One products power high-availability infrastructure applications such as: wireless communications, routers, data storage and servers, optical networking, medical diagnostic, railway controls, and semiconductor test equipment. Power-One, with headquarters in Camarillo, CA, has global sales offices and manufacturing and R&D operations in China, Dominican Republic, Ireland, Slovakia, Switzerland, and the United States. For more information regarding Power-One, please visit www.power-one.com.

Power-One products are not designed, intended for use in, or authorized for use as critical components in life support systems, equipment used in hazardous environments, or nuclear control systems without the express written consent of the respective divisional president of Power-One, Inc. The appearance of products, including safety agency certifications pictured on labels, may change depending on the date manufactured. Specifications are subject to change without notice.