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:
May. 13, 2025
Filed:
Oct. 21, 2022
Applicant:
Nanowatt Inc., Milpitas, CA (US);
Inventors:
Wenbo Liang, San Jose, CA (US);
Edward Er Deng, Los Altos, CA (US);
Ying Li, Shanghai, CN;
San Hwa Chee, San Ramon, CA (US);
Assignee:
Nanowatt Inc., Milpitas, CA (US);
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H02M 1/08 (2006.01); H02M 1/36 (2007.01); H02M 7/217 (2006.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 3/33592 (2013.01); H02M 1/08 (2013.01); H02M 1/36 (2013.01); H02M 7/217 (2013.01); H02M 1/0045 (2021.05);
Abstract
An AC-DC converter includes an AC voltage source, a rectifier, and a rectifier control circuit. The rectifier includes a field effect transistor (FET) having a source, a drain, and a gate. The drain of the FET is coupled to the AC voltage source, and the source is coupled to ground. The rectifier control circuit is coupled to the gate of the FET. The rectifier control circuit is configured to provide a ramp voltage to regulate the FET after the AC voltage source is turned off.