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. 30, 2017
Filed:
Mar. 27, 2015
Applicant:
Alpha and Omega Semiconductor (Cayman) Ltd., Sunnyvale, CA (US);
Inventors:
Assignee:
Alpha & Omega Semiconductor (Cayman), Ltd., Sunnyvale, CA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 19/00 (2006.01); G01R 19/22 (2006.01); H02M 7/04 (2006.01); H02M 1/32 (2007.01);
U.S. Cl.
CPC ...
G01R 19/22 (2013.01); G01R 19/0007 (2013.01); H02M 1/32 (2013.01); H02M 2001/322 (2013.01);
Abstract
The present invention relates to power conversion systems, specifically, it relates to a device for detecting the DC voltage rectified from the AC power supply voltage in an AC-DC converter, primarily used to determine whether the DC input voltage is under a brown-out level and to monitor whether the AC power supply is removed and to discharge the residue DC voltage generated in a high frequency filter capacitor, which is used to filter high frequency noise signals of the AC power supply, during the removal of the AC power.