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.
Patent No.:
Date of Patent:
Nov. 01, 2022
Filed:
Jul. 29, 2021
Realtek Semiconductor Corporation, Hsinchu, TW;
Chien-Hao Chiu, Hsinchu, TW;
REALTEK SEMICONDUCTOR CORPORATION, Hsinchu, TW;
Abstract
A power switching circuit includes a first switch circuit, a second switch circuit, a control circuit, and a driver circuit. The first switch circuit receives a first power voltage and coupled to an output terminal. The first switch circuit includes a first P-type transistor and a second P-type transistor coupled in series. The second switch circuit receives a second power voltage and coupled to the output terminal. The second switch circuit includes a third P-type transistor and a fourth P-type transistor coupled in series. The control circuit generates a control signal according to an output voltage at the output terminal, a power state signal, and one of the first power voltage and the second power voltage. The driver circuit generates a first driving signal or a second driving signal according to the control signal to control the first switch circuit or the second switch circuit.