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:
Sep. 23, 2025
Filed:
Dec. 29, 2022
Guangdong Oppo Mobile Telecommunications Corp., Ltd., Guangdong, CN;
Powerland Technology Inc., Jiangsu, CN;
Chen Tian, Guangdong, CN;
Jingpeng Zhu, Jiangsu, CN;
Jialiang Zhang, Guangdong, CN;
Ming Xu, Jiangsu, CN;
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., LTD., Guangdong, CN;
POWERLAND TECHNOLOGY INC., Jiangsu, CN;
Abstract
A power supply device includes: an input rectifier circuit configured to convert a received alternating-current power into a first pulsating direct-current voltage; a first-stage conversion circuit connected with the input rectifier circuit and configured to convert the first pulsating direct-current voltage into a second pulsating direct-current voltage; a valley-fill circuit connected with the first-stage conversion circuit and configured to supply, in response to a voltage value of the second pulsating direct-current voltage being lower than a voltage threshold, electrical power to thereby enable the voltage value of the second pulsating direct-current voltage to be greater than or equal to the voltage threshold; and a second-stage conversion circuit connected with the first-stage conversion circuit and configured to convert the second pulsating direct-current voltage into a constant direct-current voltage and output the constant direct-current voltage.