250 watt ATX power supply solution delivers 88 percent power efficiency across all load points, reducing power losses by approximately 68 percent

Feb. 9, 2009 – ON Semiconductor (Nasdaq: ONNN), a leading global supplier of high performance, energy efficient, silicon solutions, today announced that Hipro Electronics has selected the company’s latest ATX design for their desktop PCs. The design offers 88 percent power efficiency (80 PLUS® Silver) across all load points, reducing power losses by approximately 68 percent.

The ON Semiconductor ATX 88 percent efficiency solution for Hipro uses zero voltage switching (ZVS) architecture and addresses all functional blocks of the ATX power supply, including power factor correction, switch-mode power supply control and regulation, post regulation and standby power.

"The computing industry has growing demands for power efficiency," said S. C. Loh, Technical Director of Hipro Electronics Hong Kong. "ON Semiconductor’s new ATX 88 percent efficiency solution meets our requirements to develop highly efficient power supplies across all load points in our desktop PCs. ATX power supplies on the market today typically operate at 70 percent power efficiency, hence ON Semiconductor’s ATX solution is beyond market benchmark, which means our PC customers get higher power efficiency and savings.”

"The Hipro order reflects the confidence of our longstanding customer in achieving our goal— to be the industry benchmark for power efficiency,” said Darrell Lim, ON Semiconductor regional vice president of Sales for Greater China. “ON Semiconductor is committed to delivering innovative, turnkey power efficient solutions to address the global need for power efficiency in both active and standby modes. We worked closely with worldwide regulatory organizations and our customers to develop the ATX 80 PLUS Silver efficiency power solution, and have customized it to Hipro’s specifications to deliver 88 percent power efficiency.”

ON Semiconductor unveiled the industry’s first open GreenPointTM ATX reference design certified to meet 80 PLUS performance requirements for computing applications in 2005. The company launched another industry’s first ATX reference design that exceeds new ENERGY STAR® efficiency standards for desktop computers in 2007. Its latest ATX 80 PLUS Silver efficiency reference design further demonstrates ON Semiconductor’s commitment to energy conservation and customers with highly efficient and cost-effective power solutions.

The company’s reference design addresses all functional blocks of the ATX power supply, including power factor correction, switch-mode power supply control and regulation, post regulation, and standby power. The design utilizes several of ON Semiconductor’s newest power management devices and draws from its leading discrete component portfolio to achieve superior efficiency performance.

ON Semiconductor has a complete documentation package for the ATX reference design, including description, schematics, bill-of-materials, Gerber files, and evaluation guidelines. The documentation package is available at www.onsemi.com/powersupplies, as are links to relevant industry information and other supporting information.

About Hipro Electronics
Hipro Electronics (Taiwan) Co., Ltd. is a leading total power solution expert, with a global staff of more than 8,000. Specializing in desktop PC and notebook power supplies, Hipro’s major customers include Apple, Dell, HP, IBM, and Microsoft.

About ON Semiconductor
With its global logistics network and strong product portfolio, ON Semiconductor (Nasdaq: ONNN) is a preferred supplier of high performance, energy efficient, silicon solutions to customers in the power supply, automotive, communication, computer, consumer, medical, industrial, mobile phone, and military/aerospace markets. The company’s broad portfolio includes power, analog, DSP, mixed-signal, advance logic, clock management, non-volatile memory and standard component devices. Global corporate headquarters are located in Phoenix, Arizona. The company operates a network of manufacturing facilities, sales offices and design centers in key markets throughout North America, Europe, and the Asia Pacific regions. For more information, visit https://www.onsemi.com.

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ON Semiconductor and the ON Semiconductor logo are registered trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the company references its website in this news release, such information on the website is not to be incorporated herein.

About onsemi

onsemi (Nasdaq: ON) is driving disruptive innovations to help build a better future. With a focus on automotive and industrial end-markets, the company is accelerating change in megatrends such as vehicle electrification and safety, sustainable energy grids, industrial automation, and 5G and cloud infrastructure. With a highly differentiated and innovative product portfolio, onsemi creates intelligent power and sensing technologies that solve the world’s most complex challenges and leads the way in creating a safer, cleaner, and smarter world.

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onsemi and the onsemi logo are trademarks of Semiconductor Components Industries, LLC. All other brand and product names appearing in this document are registered trademarks or trademarks of their respective holders. Although the Company references its website in this news release, information on the website is not to be incorporated herein.

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