SAN JOSE, Calif. — (BUSINESS WIRE) — December 21, 2012 — Power Integrations (Nasdaq: POWI) today announced that a Chinese court has ruled in the company’s favor in infringement proceedings filed against it by Fairchild Semiconductor and its System General subsidiary. After more than two years of litigation, the Suzhou Intermediate Court has found that Power Integrations does not infringe any of the patents asserted by Fairchild in the case.

The decision follows three previous findings of infringement against Fairchild and its System General (SG) subsidiary in cases brought by Power Integrations. In 2006, Fairchild was found in a U.S. federal district court to infringe four Power Integrations patents, and a permanent injunction was issued against more than 100 infringing Fairchild products. The infringement was later found to be willful, resulting in enhancement of the damage award, which currently stands at $12 million; the results of that case are currently under appeal. Also in 2006, the International Trade Commission found that SG infringed two Power Integrations patents. Earlier this year, Fairchild was again found to violate two of the same patents found to be infringed in the 2006 district-court decision; Power Integrations is seeking additional damages as well as an injunction against the 75 Fairchild products implicated in that decision.

Commented Balu Balakrishnan, president and CEO of Power Integrations: “We are gratified that the Chinese authorities have rejected Fairchild’s baseless claims of infringement and recognized, like others before them, which of these two companies is the true innovator.”

About Power Integrations

Power Integrations, Inc., is a Silicon Valley-based supplier of high-performance electronic components used in high-voltage power-conversion systems. The company’s integrated circuits and diodes enable compact, energy-efficient AC-DC power supplies for a vast range of electronic products including mobile devices, TVs, PCs, appliances, smart utility meters and LED lights. CONCEPT IGBT drivers enhance the efficiency, reliability and cost of high-power applications such as industrial motor drives, solar and wind energy systems, electric vehicles and high-voltage DC transmission. Since its introduction in 1998, Power Integrations’ EcoSmart^® energy-efficiency technology has prevented billions of dollars’ worth of energy waste and millions of tons of carbon emissions. Reflecting the environmental benefits of the company’s products, Power Integrations’ stock is included in the NASDAQ^® Clean Edge^® Green Energy Index, The Cleantech Index^®, and the Ardour Global Index^SM. For more information, including design-support tools and resources, please visit www.powerint.com; visit Power Integrations’ Green Room for a comprehensive guide to energy-efficiency standards around the world.