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. 03, 2006
Filed:
Aug. 11, 2004
Qingyou Zhang, Taoyuan Shien, TW;
Aibin Qiu, Taoyuan Shien, TW;
Jianping Ying, Taoyuan Shien, TW;
Jianhong Zeng, Taoyuan Shien, TW;
Qingyou Zhang, Taoyuan Shien, TW;
Aibin Qiu, Taoyuan Shien, TW;
Jianping Ying, Taoyuan Shien, TW;
Jianhong Zeng, Taoyuan Shien, TW;
Delta Electronics Inc., Taoyuan Hsien, TW;
Abstract
The provided method and control circuit are employed to alternately control the dual boost PFC circuits. The control circuit for alternately controlling parallel-connected first and second boost circuits of a dual boost PFC circuit to achieve a current-sharing of the first and the second boost circuits includes: a first control circuit having a first current control loop for employing an output voltage of the PFC circuit, a feed-forward voltage, and an input reference voltage to generate a current reference, and sending the current reference to an input terminal of the first current control loop to generate a first PWM signal to drive the first boost circuit, and a second control circuit having a second current control loop for receiving the current reference through an input terminal of the second current control loop to generate a second PWM signal to drive the second boost circuit.