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:
May. 24, 2022
Filed:
Nov. 18, 2019
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Songnan Yang, Frisco, TX (US);
Xiaolin Mao, Cupertino, CA (US);
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Abstract
Described herein is a wireless charging system including a wireless power transmitter and a wireless power receiver, where the wireless power receiver is part of a wireless electronic device such as a mobile telephone. The wireless power receiver is used to charge a battery of the wireless electronic device and can include both a closed-loop DC-DC converter, such as a buck charger, and an open-loop DC-DC converter, such as a switched capacitor charger. In addition to an in-band communication channel between the power transmitter and the power receiver, the system also includes an out-of-band communication channel through which the power transmitter and the power receiver can exchange control signals, helping to avoid interference that can occur in the in-band communication channel when using the open-loop DC-DC converter.