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:
Jun. 27, 2017
Filed:
Dec. 04, 2013
Applicant:
Inventronics (Hangzhou), Inc., Hangzhou, Zhejiang, CN;
Inventors:
Assignee:
INVENTRONICS (HANGZHOU), INC., Hangzhou, Zhejiang, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02M 1/42 (2007.01);
U.S. Cl.
CPC ...
H02M 1/4208 (2013.01); H02M 1/4225 (2013.01); Y02B 70/126 (2013.01); Y02P 80/112 (2015.11);
Abstract
A control circuit in a power factor correction (PFC) circuit includes: a multiplier, used for multiplying a voltage sampling signal by a feedback signal, and outputting a first signal; and a waveform generating module, used for generating a second signal related to a filter capacitor connected in parallel to an input end and/or an output end of a rectifier bridge. A control signal for controlling a state of a main switch transistor is generated by using the first signal, the second signal, and a current sampling signal of the main switch transistor in the PFC circuit.