Invention Grant
- Patent Title: Resonant wireless power receiver circuit and control circuit and wireless power conversion method thereof
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Application No.: US15144553Application Date: 2016-05-02
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Publication No.: US09853505B2Publication Date: 2017-12-26
- Inventor: Kuo-Chi Liu , Wei-Hsin Wei
- Applicant: RICHTEK TECHNOLOGY CORPORATION
- Applicant Address: TW Zhubei, Hsinchu
- Assignee: RICHTEK TECHNOLOGY CORPORATION
- Current Assignee: RICHTEK TECHNOLOGY CORPORATION
- Current Assignee Address: TW Zhubei, Hsinchu
- Agency: Tung & Associates
- Main IPC: H01F27/42
- IPC: H01F27/42 ; H01F37/00 ; H01F38/00 ; H02J50/12 ; H02M7/219 ; H02M7/217

Abstract:
The present invention provides a resonant wireless power receiver circuit, including: a resonant circuit for receiving a wireless power to generate an AC resonant signal; a switch controlled rectifier circuit which includes a multi-mode switch circuit, for rectifying the AC resonant signal into a rectifier output signal to drive a load, wherein the multi-mode switch circuit includes at least one multi-mode switch; and a feedback control circuit for generating a switch control signal according to a feedback signal related to the rectifier output signal to control the at least one multi-mode switch such that it operates at least in a Resonance Short Circuit Operation to limit the rectifier output signal or to regulate the rectifier output signal. In the Resonance Short Circuit Operation, a positive resonant output node and a negative resonant output node are short-circuited by the multi-mode switch circuit.
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