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. 05, 2020
Filed:
May. 17, 2019
Huawei Technologies Co., Ltd., Shenzhen, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
An online voltage adjustment circuit for a board power supply, where a first voltage division circuit is coupled in parallel to a first bias resistor, a second voltage division circuit is coupled in parallel to a second bias resistor, and a detection chip obtains an initial output voltage of the board power supply. Based on the initial output voltage and a preset voltage, a control chip controls a first switch on the first voltage division circuit to be on or off, and a second switch on the second voltage division circuit to be on or off. As a result, a feedback value of a feedback pin of the board power supply changes, and then an output voltage of the board power supply changes, thereby adjusting the output voltage of the board power supply.