Asymmetrical resonant power converters

Details Asymmetrical resonant power converters Asymmetrical resonant power converters

2011-08-02

2011-08-02

Berhane, Adolf (Department: 2838)

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

C363S018000, C363S021070, C363S021090

Reexamination Certificate

active

07990739

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.

REFERENCES:
patent: 6154375 (2000-11-01), Majid et al.
patent: 7313004 (2007-12-01), Yang et al.
patent: 7684220 (2010-03-01), Fang et al.
patent: 7778050 (2010-08-01), Yamashita
patent: 2010/0020569 (2010-01-01), Melanson et al.

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