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:
Oct. 22, 2013
Filed:
Jul. 18, 2008
Applicants:
Yong Zhang, Nanjing, CN;
Peng Cai, Nanjing, CN;
Inventors:
Yong Zhang, Nanjing, CN;
Peng Cai, Nanjing, CN;
Assignee:
Astec International Limited, Kwun Tong, Kowloon, HK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 5/42 (2006.01); H02M 7/04 (2006.01); H02M 7/68 (2006.01); G05F 1/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of controlling a power factor correction (PFC) converter that has a discontinuous input current includes sensing the input current, sensing an output voltage and controlling a duty cycle of at least one switch in the converter in response to the sensed input current and output voltage using a control equation for controlling the duty cycle of the switch such that an average input current to the converter is sinusoidal. Example circuits capable of performing the method are also disclosed.