Resonant wireless power transmitter circuit and control circuit and control method thereof

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 10680463
APP PUB NO 20170085131A1
SERIAL NO

15095087

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present invention discloses a resonant wireless power transmitter circuit, which has an input impedance. The resonant wireless power transmitter circuit includes: a driver circuit coupled with a power supply, which includes at least a power switch; a switching resonant control circuit coupled with the driver circuit, such that the driver operates at a pre-determined or a variable resonant frequency; an adjustable impedance matching circuit coupled with the driver circuit, which includes at least a varactor; a transmitter circuit coupled with the impedance matching circuit and the driver circuit, which includes at least a transmitter coil; and an impedance control circuit coupled with the adjustable impedance matching circuit and the driver circuit, which provides an impedance control signal to control the reactance of the varactor, such that the input impedance of the resonant wireless power transmitter circuit is matched at the pre-determined or the variable resonant frequency.

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Patent Owner(s)

  • RICHTEK TECHNOLOGY CORPORATION, R.O.C.

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Liu, Kuo-Chi HsinChu, TW 60 258
Wang, Chih-Hsien Taoyuan, TW 43 293
Wei, Wei-Hsin Zhubei, TW 35 414

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