<SEC-DOCUMENT>0000833640-21-000091.txt : 20210405
<SEC-HEADER>0000833640-21-000091.hdr.sgml : 20210405
<ACCEPTANCE-DATETIME>20210405191341
ACCESSION NUMBER:		0000833640-21-000091
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20210401
FILED AS OF DATE:		20210405
DATE AS OF CHANGE:		20210405

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Lloyd Jennifer A
		CENTRAL INDEX KEY:			0001854782

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-23441
		FILM NUMBER:		21807421

	MAIL ADDRESS:	
		STREET 1:		5245 HELLYER AVE
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95138

ISSUER:		

	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

	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>3
<SEQUENCE>1
<FILENAME>edgardoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0206</schemaVersion>

    <documentType>3</documentType>

    <periodOfReport>2021-04-01</periodOfReport>

    <noSecuritiesOwned>1</noSecuritiesOwned>

    <issuer>
        <issuerCik>0000833640</issuerCik>
        <issuerName>POWER INTEGRATIONS INC</issuerName>
        <issuerTradingSymbol>POWI</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001854782</rptOwnerCik>
            <rptOwnerName>Lloyd Jennifer A</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5245 HELLYER AVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95138</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <ownerSignature>
        <signatureName>By: /s/ Eric Verity Attorney In Fact For: Jennifer Lloyd</signatureName>
        <signatureDate>2021-04-05</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>powerofattorneylloyd.txt
<DESCRIPTION>EDGAR SUPPORTING DOCUMENT
<TEXT>
LIMITED POWER OF ATTORNEY FOR SECTION 16 REPORTING OBLIGATIONS

Know all by these presents, that the undersigned hereby
constitutes and appoints each of Balu Balakrishnan,
Sandeep Nayyar, Eric Verity, and Jeff Padilla, or either
of them acting singly and with full power of substitution,
the undersigned's true and lawful attorney-in-fact to:

1. Execute for and on behalf of the undersigned, in
the undersigned's capacity as an officer or director
or both of Power Integrations, Inc. (the "Company"),
Forms 3, 4 and 5 (and any amendments thereto) in accordance
with Section 16(a) of the Securities Exchange Act of 1934,
as amended (the "Exchange Act"), and the rules thereunder;

2. Do and perform any and all acts for and on behalf of the
undersigned which may be necessary or desirable to complete
and execute any such Form 3, 4 or 5, complete and execute any
amendments thereto, and timely file such form with the U.S.
Securities and Exchange Commission (the "SEC"), including without
limitation the filing of a Form ID or any other documents
necessary or appropriate to enable the undersigned to file the
Forms 3, 4 and 5 electronically with the SEC; and

3. Take any other action in connection with the foregoing which,
in the opinion of such attorney-in-fact, may be of benefit to,
in the best interest of, or legally required by or for, the
undersigned, it being understood that the documents executed by
such attorney-in-fact on behalf of the undersigned pursuant to
this Limited Power of Attorney shall be in such form and shall
contain such information and disclosure as such attorney-in-fact
may approve in such attorney-in-fact's discretion.

The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform any and every act and thing
whatsoever required, necessary or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all
intents and purposes as the undersigned might or could do if
personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact,
or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this Limited Power of
Attorney and the rights and powers herein granted.

The undersigned acknowledges that the foregoing attorneys-in-fact,
in serving in such capacity at the request and on the behalf of the
undersigned, are not assuming, nor is the Company assuming, any of
the undersigned's responsibilities to comply with, or any liability
for the failure to comply with, any provision of Section 16 of the
Exchange Act.

This Limited Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4 or 5
with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to each of the foregoing
attorneys-in-fact. IN WITNESS WHEREOF,the undersigned has executed
this Limited Power of Attorney as of this 25th day of March, 2021.
Signed and acknowledged:


Signature
/s/Jennifer A. Lloyd
Printed Name

</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
