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:
Oct. 13, 2020
Filed:
Dec. 17, 2018
Shenzhen Vmax Power Co., Ltd., Shenzhen, Guangdong, CN;
Jun Liu, Guangdong, CN;
Yingying Feng, Guangdong, CN;
Jinzhu Xu, Guangdong, CN;
Hua Ao, Guangdong, CN;
SHENZHEN VMAX POWER CO., LTD., Shenzhen, Guangdong, CN;
Abstract
A dual-output port charging circuit includes a primary switching circuit, a secondary first switching circuit, a secondary second switching circuit, a transformer connected to the three circuits, and a controller. The controller receives and samples an output voltage and an output current of the secondary second switching circuit, the output voltage and the output current are compared with a reference value, and a compensation is made, so as to eventually control an on-off time of a switch in the primary switching circuit; and the controller receives and samples an output current of the primary switching circuit, a zero-cross delay is calculated through a zero detection, so as to control an on-off time of a rectification switch in the secondary second switching circuit. One controller is used to flexibly control voltages of two direct current output ports with accurate voltage regulation and strong antijamming capability.