Exhibit 10.46

[*] = Certain confidential information contained in this document, marked by brackets, has been omitted and filed separately with the Securities and Exchange Commission pursuant to Rule 24b-2 of the Securities Exchange Act of 1934, as amended.

This Amendment Number Seven (the “Amendment") effective as of Oct. 3^rd, 2016 (the “Amendment Effective Date”) amends the Wafer Supply Agreement effective April 1, 2005, as amended by Amendment number one effective December 19, 2008, Amendment number two effective September 13, 2010, Amendment number three effective February 1, 2012, Amendment number four effective April 1, 2015, Amendment number five effective November 2, 2015 and Amendment number six effective December 8, 2015 (as amended the “Agreement”) by and between:

and

WHEREAS, pursuant to the terms of the Agreement, Power Integrations grants to Seiko Epson licenses of certain of Power Integrations' intellectual property for the sole purpose of Power Integrations acquiring from Seiko Epson the fabrication and supply of wafers of certain power IC products; and

WHEREAS, Power Integrations and Seiko Epson desire to amend the terms of the Agreement; and

WHEREAS, in accordance with Section 18.10 of the Agreement, the Agreement may be amended only by an instrument in writing duly executed by authorized representative of Seiko Epson and Power Integrations.

Now, Therefore, in consideration of the mutual promises contained herein and other good and valuable consideration the receipt and sufficiency of which is hereby acknowledged, the parties hereby amend the Agreement as follows:

1.    Section 13.1 of the Agreement is deleted in its entirety and replaced with the following:

13.1 This Agreement shall continue in full force and effect from the Effective Date until [*], unless earlier terminated as provided herein (“Term”).  After [*], Seiko Epson may terminate the Agreement as it applies to [*] production without cause at its convenience upon providing thirty-six (36) months prior written notice thereof to Power Integrations. After [*], Seiko Epson may terminate the Agreement as it applies to [*] production without cause at its convenience upon providing thirty-six (36) months prior written notice thereof to Power Integrations. The parties agree to negotiate in good faith in [*] for an extension and commitment by Seiko Epson of [*] production, on mutually agreeable terms and conditions. In addition, if this Agreement has not been earlier terminated, the parties agree to negotiate in good faith beginning [*] year prior to the end of the Term, for this Agreement's continuation for another [*] year period, on mutually agreeable terms and conditions.

Effective as of the Amendment Effective Date, all references in the Agreement to the “Agreement” or “this Agreement” shall mean the Agreement as amended by this Amendment. Except as expressly amended herein, the terms of the Agreement continue unchanged and shall remain in full force and effect. This Amendment may be executed in one or more counterparts, each of which shall be considered an original, but all of which counterparts together shall constitute one and the same instrument.

IN WITNESS WHEREOF, the parties have caused this Amendment to be executed by their duly authorized representatives, effective as of the Amendment Effective Date.