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:
Jan. 13, 2026
Filed:
May. 09, 2023
Shanghai Xinlong Semiconductor Technology Co., Ltd., Shanghai, CN;
Jinlong Xu, Shanghai, CN;
Ruiping Li, Shanghai, CN;
SHANGHAI XINLONG SEMICONDUCTOR TECHNOLOGY CO., LTD., Shanghai, CN;
Abstract
An SMPS control circuit and a power chip are disclosed. The SMPS control circuit includes a signal conversion module configured to acquire an input voltage and output a reference signal. The reference signal increases as the input voltage increases at a rate decreasing as the input voltage increases. The reference signal is configured to turn on a power transistor and maintain it on for a period of time in inverse proportion to the reference signal. With this configuration, the SMPS control circuit operates in a COT mode combining, in a high-voltage range, advantages of both a complete COT mode and a mode with an on-time in inverse proportion to the input voltage, overcoming the problem with conventional power supply circuits of being configured with an on-time vs. input voltage functional relationship in a COT mode, which is suboptimal and problematic under some operating conditions.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile