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. 03, 2020
Filed:
Dec. 12, 2018
Applicant:
Power Integrations, Inc., San Jose, CA (US);
Inventors:
Zhao-Jun Wang, San Jose, CA (US);
Qing McIntosh, Los Gatos, CA (US);
Assignee:
Power Integrations, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01); H03K 5/24 (2006.01); H02M 1/00 (2006.01); H02M 7/217 (2006.01);
U.S. Cl.
CPC ...
H02M 3/335 (2013.01); H03K 5/2472 (2013.01); H02M 7/217 (2013.01); H02M 2001/0006 (2013.01); H02M 2001/0009 (2013.01); H02M 2001/0025 (2013.01);
Abstract
Apparatus and methods for sensing a variable amplitude switching signal from a secondary winding in a power conversion system are disclosed herein. By using a comparator with an adaptable reference, variable amplitude secondary winding signals in phase with primary winding signals may be detected in the presence of ringing. Detection of the in phase secondary winding signals, in turn, allows for secondary side control with power factor correction and discontinuous mode operation.