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:
Aug. 11, 2020
Filed:
Jun. 29, 2018
Applicant:
Dialog Semiconductor Inc., Campbell, CA (US);
Inventors:
Wenduo Liu, Campbell, CA (US);
Cong Zheng, Campbell, CA (US);
Assignee:
DIALOG SEMICONDUCTOR INC., Campbell, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 1/00 (2006.01); H02M 1/34 (2007.01);
U.S. Cl.
CPC ...
H02M 3/33507 (2013.01); H02M 1/08 (2013.01); H02M 2001/0006 (2013.01); H02M 2001/342 (2013.01);
Abstract
A first charging path is provided for the charging of an a bootstrap capacitor that stores a driver power supply voltage for driving an active clamp switch transistor in a flyback converter. The first charging path couples charge from an active clamp capacitor to charge the bootstrap capacitor. A power supply capacitor stores a power supply voltage for a controller of a power switch for the flyback converter. A second charging path couples charge from the power supply capacitor to charge the bootstrap capacitor.