Power Integrations Extends LinkSwitch® Family with Lower Cost IC

April 22, 2003
LNK500 Continues Attack on Energy-Wasting Linear Transformer-based Chargers and Adapters

SAN JOSE, Calif. – April 22, 2003 – Power Integrations, Inc. (Nasdaq: POWI), announced a new lower cost addition to its LinkSwitch family today, continuing its campaign to replace energy vampire linear transformer chargers and adapters with smaller, more efficient switching designs. The new LNK500, a high-voltage monolithic power conversion IC, uses the same revolutionary primary switching power supply topology as the current LNK501, but takes full advantage of the loose output current characteristic of most low-end linear transformer designs. LNK500's wider output current tolerance of ±25% allows for lower system cost, the most critical barrier in replacing older linear transformer designs. Switcher benefits of a LinkSwitch-based power supply include smaller size, lighter weight, superior performance, and significantly higher energy efficiency.

With as few as fourteen components, the LNK500 enables a fault protected, universal input (85 VAC to 265 VAC), constant voltage (CV) or constant voltage, constant current (CV/CC) output switching power supply that meets worldwide energy efficiency standards.

Applications for the LNK500 include linear transformer replacement in adapters and battery chargers for a wide range of personal electronics such as cell phones, cordless phones, PDAs, digital cameras, MP3 players, shavers, home appliances, television standby, and other auxiliary power supplies.

High-volume pricing (>1 million piece quantities) for the LNK500P, a 3 W part housed in a plastic DIP-8 package, is $0.31 each. The device is also available in an 8 Pin surface mountable package.

A Design Accelerator Kit (DAK-16A), containing two operational 2.75 W universal input AC-DC adapters, product samples and the company's power supply design software program, PI Expert™, is available for ordering via Power Integrations' Web site.

The LNK500 is supported by a number of other design tools including a 20-page data sheet and a Design Guide application note (AN-35).

Power Integrations, Inc. is a leading supplier of high-voltage analog integrated circuits for use in power conversion. For more information, contact the company at 5245 Hellyer Avenue, San Jose, California 95138, PH: (408) 414-9200 or visit the company's web site at www.powerint.com.

Safe Harbor Statement

This press release contains forward-looking statements, which reflect management's current forecast of certain aspects of the Company's future business. These forward-looking statements are based on current information, which we have assessed, but which by its nature, is subject to rapid and even abrupt changes. Forward looking statements are denoted by the use of such words and phrases as "will," "expects," "believe," and similar words and phrases that look toward future events or performance. The Company's actual results could differ materially from those projected or implied by our forward looking statements due to risks and uncertainties associated with the Company's business. These include, but are not limited to, changes and shifts in customer demand away from products which integrate the Company's ICs to products which do not; the lengthy sales cycle for the Company's products which often results in the Company incurring substantial expenses before the Company generates significant revenues, if any, from the sale of a new product or even before a customer, if any, decides to use the new product in any of its products; and the associated risk that the customer's product in which the Company's new product is used will not be commercially successful due to a variety of factors including cost relative to competitive products at the time the customer's product enters the market. Other factors include, but are not limited to, our ability to maintain and establish strategic relationships; the risks inherent in the development and delivery of complex technologies; our ability to attract, retain and motivate qualified personnel; the emergence of new markets for our products and services, and our ability to compete in those markets based on timeliness, cost and market demand; and our limited financial resources. We more fully discuss these and other risk factors in the Company's most recent reports on Form 10-K and Form 10-Q filed with the Securities and Exchange Commission.

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NASDAQ: POWI $68.97 -3.03
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Joe Shiffler
Director, Investor Relations & Corporate Communications
(408) 414-8528
Fax: (408) 414-8628
jshiffler@power.com

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Power Integrations
Attention: Investor Relations
5245 Hellyer Avenue San Jose, CA. 95138

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