updated 1/11/2011 4:17:23 PM ET 2011-01-11T21:17:23

SAN JOSE, Calif., Jan. 11, 2011 (GLOBE NEWSWIRE) -- Power Integrations (Nasdaq:POWI), the leader in high-voltage integrated circuits for energy-efficient power conversion, will announce its fourth-quarter financial results after market hours on Thursday, February 3, 2011. The company will conduct a conference call beginning at 1:30 p.m. Pacific time. Members of the investment community can join the call by dialing 1-877-303-9795 from within the United States or 1-631-291-4581 from outside the U.S. Live and archived audio webcasts of the conference call will be available on the investor-relations page of the company's website, http://investors.powerint.com

About Power Integrations

Power Integrations is the leading supplier of high-voltage 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™ energy-efficiency technology has saved an estimated $4.5 billion of standby energy waste and prevented millions of tons of CO2 emissions. The company's Green Room web site 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 .

Power Integrations, EcoSmart, and the Power Integrations logo are trademarks or registered trademarks of Power Integrations, Inc.

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

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