The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Apr. 09, 2024

Filed:

Jun. 08, 2022
Applicant:

Taiwan Semiconductor Manufacturing Company, Ltd., Hsin-Chu, TW;

Inventors:

Yi-An Lai, Taipei, TW;

Chan-Hong Chern, Palo Alto, CA (US);

Cheng-Hsiang Hsieh, Taipei, TW;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02H 9/04 (2006.01); H03K 17/0812 (2006.01);
U.S. Cl.
CPC ...
H03K 17/08128 (2013.01); H02H 9/04 (2013.01); H03K 17/08122 (2013.01);
Abstract

A switching circuit includes a main circuit including a number of first transistors. The main circuit has a first node, a second node, and a third node and is operative in response to a control signal received by the first node, and the second node is configured to receive a supply voltage. The switching circuit also includes an auxiliary circuit electrically coupled to the second node of the main circuit and configured to provide surge protection for the main circuit. The auxiliary circuit includes a second transistor. A breakdown voltage of the second transistor is different than a breakdown voltage of each first transistor of the number of first transistors.


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