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:
Sep. 17, 2019

Filed:

Apr. 14, 2014
Applicant:

Alpha and Omega Semiconductor Incorporated, Sunnyvale, CA (US);

Inventors:

Sik K. Lui, Sunnyvale, CA (US);

Daniel S. Ng, Campbell, CA (US);

Xiaobin Wang, San Jose, CA (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/158 (2006.01); H03K 17/16 (2006.01);
U.S. Cl.
CPC ...
H02M 3/158 (2013.01); H03K 17/164 (2013.01);
Abstract

A switch circuit includes a first MOS transistor and a second MOS transistor of a same conductivity type connected in parallel between a first terminal and a second terminal. The first and second MOS transistors have respective gate terminals coupled to the control terminal to receive a control signal to turn the switch circuit on or off where the control signal transitions from a first voltage level to a second voltage level at a slow rate of change. The first MOS transistor has a first threshold voltage and the second MOS transistor has a second threshold voltage where the first threshold voltage is less than the second threshold voltage.


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