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:
Sep. 04, 2019
Applicant:
Delta Electronics (Shanghai) Co., Ltd., Shanghai, CN;
Inventors:
Assignee:
DELTA ELECTRONICS (SHANGHAI) CO., LTD., Shanghai, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/42 (2007.01); G01R 19/175 (2006.01); H03K 5/1536 (2006.01); H02M 7/162 (2006.01); H02M 1/08 (2006.01); H02M 7/219 (2006.01);
U.S. Cl.
CPC ...
H02M 1/4208 (2013.01); G01R 19/175 (2013.01); H02M 1/083 (2013.01); H02M 7/162 (2013.01); H03K 5/1536 (2013.01); H02M 2007/2195 (2013.01);
Abstract
The present disclosure provides a control circuit, where the control circuit includes: a signal detection unit, a zero-crossing detection (ZCD) signal acquisition unit, a pulse width modulation (PWM) control signal generation unit, and a signal processing unit; where the signal detection unit, the ZCD signal acquisition unit, the PWM control signal generation unit and the signal processing unit are connected in cascade. The control circuit provided in the present disclosure reduces processing delay of a ZCD signal and improve signal a processing accuracy of a power factor correction (PFC) system.