POWER INTEGRATIONS INC — Director's Dealing 2010

Feb 25, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: POWER INTEGRATIONS INC (POWI)
CIK: 0000833640
Period of Report: 2010-02-24

Reporting Person: Bell Derek (VP of Engineering)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-24	Common Stock	S	3000	$35.7105	Disposed	4650	Direct

Footnotes

F1: Includes 243 shares acquired under the POWI stock purchase plan on July 31, 2005; 1276 shares acquired under the POWI stock purchase plan on January 31, 2006 and 1481 shares acquired under the POWI stock purchase plan on Janury 31, 2008.

F2: The range of prices for the enclosed transactions were $35.71 to $35.7117.

Upon request by the SEC staff, the issuer, or any security holder of the issuer we will provide full information regarding the number of shares sold at each separate price.