    <SEC-DOCUMENT>0000833640-22-000067-index.html : 20220329
    <SEC-HEADER>0000833640-22-000067.hdr.sgml : 20220329
    <ACCEPTANCE-DATETIME>20220329160857
    ACCESSION NUMBER:		0000833640-22-000067
    CONFORMED SUBMISSION TYPE:	DEFA14A
    PUBLIC DOCUMENT COUNT:		3
    FILED AS OF DATE:		20220329
    DATE AS OF CHANGE:		20220329

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			POWER INTEGRATIONS INC
    		CENTRAL INDEX KEY:			0000833640
    		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
    		IRS NUMBER:				943065014
    		STATE OF INCORPORATION:			CA
    		FISCAL YEAR END:			1231

    	FILING VALUES:
    		FORM TYPE:		DEFA14A
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	000-23441
    		FILM NUMBER:		22780859

    	BUSINESS ADDRESS:
    		STREET 1:		5245 HELLYER AVE
    		CITY:			SAN JOSE
    		STATE:			CA
    		ZIP:			95138
    		BUSINESS PHONE:		4084149200

    	MAIL ADDRESS:
    		STREET 1:		5245 HELLYER AVE
    		CITY:			SAN JOSE
    		STATE:			CA
    		ZIP:			95138
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>DEFA14A
    <SEQUENCE>1
    <FILENAME>powi-20220329xdefa14a.htm
    <DESCRIPTION>DEFA14A
    <TEXT>
    Document 1 - file: powi-20220329xdefa14a.htm

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>2
    <FILENAME>powi-20220329xdefa14a001.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 2 - file: powi-20220329xdefa14a001.jpg

    </DOCUMENT>
    <DOCUMENT>
    <TYPE>GRAPHIC
    <SEQUENCE>3
    <FILENAME>powi-20220329xdefa14a002.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 3 - file: powi-20220329xdefa14a002.jpg

    </DOCUMENT>
    </SEC-DOCUMENT>