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.

Date of Patent:
Aug. 02, 2011

Filed:

Aug. 24, 2009
Applicants:

Ta-yung Yang, Milpitas, CA (US);

Ying-chieh Su, Taipei County, TW;

Tien-chi Lin, Taipei County, TW;

Shih-hung Hsieh, Taipei, TW;

Inventors:

Ta-Yung Yang, Milpitas, CA (US);

Ying-Chieh Su, Taipei County, TW;

Tien-Chi Lin, Taipei County, TW;

Shih-Hung Hsieh, Taipei, TW;

Assignee:

System General Corporation, Sindian City, Taipei County, TW;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02M 3/335 (2006.01);
U.S. Cl.
CPC ...
Abstract

A resonant power converter is provided and includes a capacitor, an inductive device, a first transistor, a second transistor, and a control circuit. The capacitor and the inductive device develop a resonant tank. The first transistor and the second transistor are coupled to switch the resonant tank. The control circuit generates a first signal and a second signal to control the first transistor and the second transistor respectively. Frequencies of the first signal and the second signal are changed for regulating output of the resonant power converter. The control circuit is further coupled to detect an input voltage of the resonant power converter. A pulse width of the second signal is modulated in response to change of the input voltage.


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