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. 07, 2024
Filed:
May. 23, 2022
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Ken Chin, Shenzhen, CN;
Yuanjun Liu, Shenzhen, CN;
Zhixiang Hu, Dongguan, CN;
Shuaibing Wang, Dongguan, CN;
Huawei Digital Power Technologies Co., Ltd., Shenzhen, CN;
Abstract
This application provides a resonant conversion system, including a controller and a resonant conversion circuit. The resonant conversion circuit includes a high frequency chopper circuit, a resonant cavity, a transformer, and a rectification filter network, and the high frequency chopper circuit includes switches Sand S. The controller is configured to: detect a bridge arm midpoint voltage V, and determine based on the Va current threshold signal used to indicate a current threshold; detect a resonant current on a primary side of the transformer, and compare the resonant current with the current threshold signal to control on/off of the switch Sor Sbased on the second electrical signal, so that the system operates in an inductive mode to ensure zero voltage switching of the switch, while operating in a state close to a capacitive mode to maximize the use of a gain region.