ON Semiconductor Introduces ATX Power Supply Reference Design Certified to Meet 80 PLUS Performance Requirements

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250 watt GreenPoint™ power supply solution is the industry’s first open reference design tested and verified to comply with the 80 PLUS power efficiency program

PHOENIX, Ariz. – August 23, 2005 – ON Semiconductor (NASDAQ: ONNN) today unveiled the industry’s first open ATX reference design certified to meet 80 PLUS performance requirements for computing applications. The 250 watt (W) reference design addresses all functional blocks of the ATX power supply, including power factor correction, switch-moden power supply control and regulation, post regulation and output rectification. The design utilizes several of ON Semiconductor’s advanced power management devices and draws from its leading discrete component portfolio to achieve breakthrough performance.

“This certified 80 PLUS ATX reference design demonstrates ON Semiconductor’s commitment to delivering leading-edge power-efficient solutions to assist power supply designers in their quest to develop highly efficient power supplies,” said Andy Williams, vice president of ON Semiconductor’s Power Conversion Division. “We’ve worked closely with industry standards organizations and or customers worldwide to develop this economical 80 PLUS compliant power solution. ON Semiconductor will continue to introduce additional GreenPoint™ power solutions to address the growing demand throughout the electronics industry for power efficiency in both active and standby modes.”

80 PLUS is a national buy-down program administered by Ecos Consulting for desktop computers and desktop-derived servers that contain highly efficient power supplies. The initiative challenges computer manufacturers to incorporate internal power supplies that operate at 80 percent efficiency (or better) across several load points. ATX power supplies on the market today typically operate at 65 percent efficiency.

“ON Semiconductor’s ATX power solution shows great initiative and clearly demonstrates it is possible to build an energy efficient power supply that is also high performance,” said Andrew Fanara, director of ENERGY STAR® Product Development at the U.S Environmental Protection Agency. “This reference design will definitely help move the 80 PLUS program forward and has very positive implications for eventual ENERGY STAR® certification.”

In addition to passing rigorous internal testing, ON Semiconductor’s ATX reference design prototype was independently tested and verified to comply with the 80 PLUS program by EPRI Solutions Corporation in Knoxville, Tennessee. Additionally, the ATX reference design meets IEC1000-3-2 power factor requirements.

“We salute ON Semiconductor for developing such an innovative 80 PLUS design, and making it freely available to any manufacturer for use,” said Chris Calwell, policy and research director of Ecos Consulting. “This solution demonstrates that it is both possible and affordable to meet the needs of customers that demand high efficiency and power factor correction today.”

The ATX Reference Design
ON Semiconductor has prepared a complete documentation package for the ATX reference design, including description, schematic, bill-of-materials, Gerber images and evaluation guidelines. The documentation package is available at www.onsemi.com/ATX as are the verification and testing report, links to relevant industry information (80 PLUS program, IEC1000-3-2 requirements, ATX 12 V form factor) and other supporting information.

Key products in the reference design include:

NCP1653: a compact power factor correction (PFC) controller that is ideal for continuous conduction mode (CCM) PFC applications. This device makes the choice of incorporating a PFC front-end into an ATX design easy by reducing part count and providing a robust, cost-effective front-end without range switches.

NCP1280: an active clamp controller ideal for the switch mode power supply (SMPS) section of the ATX power supply. With soft-switching capability and other unique features, this device assists in significantly enhancing the efficiency of the power stage.

NCP1014: a highly integrated regulator ideal for implementation in the standby/bias converter section of the ATX power supply. This device provides 10 W standby power at high-efficiency and with a lower part count than existing solutions.

NCP4330: a synchronous post-regulator that replaces the mag-amp post regulator to provide higher efficiency in the output section of the ATX power supply.

NTD110N02R and NTP65N02R: low RDS(on) N-channel MOSFETs that provide the pulse width modulation as part of the NCP4330 post regulator.

For additional information visit www.onsemi.com/atx .

About 80 PLUS
The 80 PLUS program is administered by Ecos Consulting on behalf of several large U.S. power utilities that offer financial incentives to manufactures to deploy computer and server power supplies that are 80 percent efficient or better across several load conditions and are power factor corrected. For more information about the 80 PLUS program visit www.80PLUS.org .

About GreenPoint™
GreenPoint™ is the ON Semiconductor designation for a family of high-efficiency power supply reference designs that meet existing or emerging standards.

About ON Semiconductor
With its global logistics network and strong portfolio of power semiconductor devices, ON Semiconductor (Nasdaq: ONNN) is a preferred supplier of power solutions to engineers, purchasing professionals, distributors and contract manufacturers in the computer, cell phone, portable devices, automotive and industrial markets. For more information, please visit ON Semiconductor’s website at 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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