Acknowledgment and Waiver



 Exhibit 10.33 
 ACKNOWLEDGMENT AND WAIVER 
 THIS
ACKNOWLEDGMENT AND WAIVER is made as of February 20, 2007, by and between POWER INTEGRATIONS, INC., a Delaware corporation, (the
“Company”) and NICHOLAS BRATHWAITE (“Director”). 
 RECITALS 
 WHEREAS, the Company has determined that certain of the option agreements
previously executed by Director, which correspond to the option grant numbers listed on Exhibit A (the “Noncompliant Option Agreements”), do not correctly reflect the date of grant and exercise price of the options
granted to Director pursuant to the 1997 Outside Directors Stock Option Plan (the “Directors Plan”); and 
 WHEREAS, Director has executed appropriate option agreements reflecting the correct dates of grant and exercise prices prescribed by the Directors Plan as set forth on Exhibit A (the “Appropriate
Option Agreements”); 
 NOW, THEREFORE, in consideration of the mutual agreements,
covenants and considerations contained herein, the undersigned hereby agree and acknowledge as follows: 
 1. Director and the Company
acknowledge and agree that the Noncompliant Option Agreements contained administrative errors and were not the appropriate option agreements relating to the options that Director was automatically granted under the Directors Plan; 
 2. Director and the Company further acknowledge and agree that the Appropriate Option Agreements supersede the Noncompliant Option Agreements and
constitute the exclusive agreements between the parties with respect to the subject options. Director and the Company hereby waive any rights each may respectively have had in connection with or arising out of the Noncompliant Option Agreements.

 3. Director and Company further acknowledge and agree that, with respect to any option exercised in whole or in part by Director
pursuant to a Noncompliant Option Agreement, Director shall provide to the Company, with respect to each share of Common Stock acquired upon exercise of such option, the amount by which the correct exercise price of such option exceeds the exercise
price paid by Director at the time of the exercise of such option. 
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 IN WITNESS WHEREOF, the undersigned have executed
this ACKNOWLEDGEMENT AND WAIVER as of the day and year first set forth above. 
  

					
	COMPANY:	 	POWER INTEGRATIONS, INC.
			
		 	By:	 	 /s/ Rafael Torres

		 	Name:	 	Rafael Torres
		 	Title:	 	CFO
			
	 DIRECTOR:
	 		 	 /s/ Nicholas Brathwaite

		 		 	Nicholas Brathwaite








 EXHIBIT A 
 OUTSIDE DIRECTOR OPTIONS 
  

													
	 Director
	  	Option
Grant
No.	  	Number
of Shares	  	Date of Option
Grant Set Forth in
the Noncompliant
Option Agreement	  	 Exercise Price ($)
 Set Forth in the
Noncompliant
Option
Agreement
	  	Correct Date
of Option
Grant	  	Correct
Exercise
Price ($)
	 N. Brathwaite
	  	001194	  	10,000	  	Dec. 12, 2000	  	15.500	  	Jan. 31, 2001	  	22.250  
	 N. Brathwaite
	  	001801	  	10,000	  	Dec. 12, 2001	  	24.590	  	Jan. 31, 2002	  	18.100  
	 N. Brathwaite
	  	002166	  	10,000	  	Dec. 12, 2002	  	19.020	  	Jan. 31, 2003	  	21.610  
	 N. Brathwaite
	  	002503	  	10,000	  	Dec. 12, 2003	  	33.850	  	Jan. 31, 2004	  	29.500*



	*	Closing price on the last trading day prior to the Anniversary Date, as the Anniversary Date was not a trading day.