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:
Dec. 25, 2007
Filed:
Dec. 21, 2006
Ta-yung Yang, Milpitas, CA (US);
Chien-yuan Lin, Pan-Chiao, TW;
Kuang-chih Shih, Taipei, TW;
Wei-ting Wang, Ciaotou Township, Kaohsiung County, TW;
Ta-Yung Yang, Milpitas, CA (US);
Chien-Yuan Lin, Pan-Chiao, TW;
Kuang-Chih Shih, Taipei, TW;
Wei-Ting Wang, Ciaotou Township, Kaohsiung County, TW;
System General Corp., Taipei, TW;
Abstract
An integrated control circuit for a resonant power converter includes a minimum-frequency programming circuit connected a first resistor to program a minimum switching frequency of the power converter. A feedback circuit is coupled to a feedback terminal to receive a feedback signal for generating an adjustment signal. A maximum-frequency programming circuit connects a second resistor to determine a maximum switching frequency in response to the adjustment signal. An oscillator is coupled to the minimum-frequency programming circuit and the maximum-frequency programming circuit to generate an oscillation signal for determining the switching frequency of the power converter. A feed-forward circuit is connected to a feed-forward terminal to receive a feed-forward signal represents the input voltage of the power converter. The switching frequency is increased in response to decrease of the feedback signal, and the switching frequency is increased in response to the increase of the feed-forward signal.