POWER INTEGRATIONS INC — Director's Dealing 2011

Feb 7, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: POWER INTEGRATIONS INC (POWI)
CIK: 0000833640
Period of Report: 2011-02-04

Reporting Person: TOMLIN JOHN (Vice President, Operations)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-04	Common Stock	M	1672	$18.95	Acquired	21245	Direct
2011-02-04	Common Stock	S	1672	$40.34	Disposed	19573	Direct
2011-02-04	Common Stock	M	1328	$18.95	Acquired	20901	Direct
2011-02-04	Common Stock	S	1328	$40.34	Disposed	19573	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2011-02-04	Non-Qualified Stock Option (Right to Buy)	$18.95	M	1672	Disposed	2013-01-08	Common Stock (1672)	Direct
2011-02-04	Non-Qualified Stock Option (Right to Buy)	$18.95	M	1328	Disposed	2013-01-08	Common Stock (1328)	Direct

Footnotes

F1: Includes 701 shares issued pursuant to the Issuer's Employee Stock Purchase Plan on January 31, 2011.

F2: This sale is pursuant to a 10B5-1 Sales Plan.