Power Integrations Announces Stock-Repurchase Program

Power Integrations (Nasdaq:POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, today announced that its board of directors has authorized the use of $25 million for the repurchase of the company's common stock. Purchases will be made according to certain pre-determined price/volume guidelines set by the board of directors.

Between February 2008 and February 2009, Power Integrations repurchased 4.9 million shares for $100 million. The company held $152 million in cash and investments as of March 31, 2009.

About Power Integrations

Power Integrations is the leading supplier of high-voltage analog integrated circuits used in energy-efficient power conversion. The company's innovative technology enables compact, energy-efficient power supplies in a wide range of electronic products, in AC-DC, DC-DC and LED lighting applications. Since its introduction in 1998, Power Integrations' EcoSmart(r) energy-efficiency technology has saved an estimated $3.4 billion of standby energy waste and prevented millions of tons of CO2 emissions. The company's Green Room web site (www.powerint.com/greenroom) provides a wealth of information about "energy vampires" and the issue of standby energy waste, along with a comprehensive guide to energy-efficiency standards around the world. Reflecting the environmental benefits of EcoSmart technology, Power Integrations is included in clean-technology stock indices sponsored by the Cleantech Group (Amex:CTIUS) and Clean Edge (Nasdaq:CELS). For more information, please visit www.powerint.com.

This news release was distributed by GlobeNewswire, www.globenewswire.com

SOURCE: Power Integrations, Inc.

Power Integrations, Inc.
          Joe Shiffler 
          (408) 414-8528
          jshiffler@powerint.com

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