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, 2026
Filed:
Apr. 16, 2024
Leadtrend Technology Corporation, Zhubei City, TW;
Tsung-Chien Wu, Zhubei City, TW;
Jun-Hao Huang, Zhubei City, TW;
Chung-Wei Lin, Zhubei City, TW;
Ming-Chang Tsou, Zhubei City, TW;
LEADTREND TECHNOLOGY CORPORATION, Zhubei City, TW;
Abstract
A control method is disclosed to generate a control signal in a power supply with a synchronous rectifier. The control signal turns ON the synchronous rectifier to provide a channel approximately short-circuited if the control signal is greater than a threshold voltage, and turns OFF the synchronous rectifier to turn the channel into an open circuit if the control signal is between the threshold voltage and a ground reference voltage. A detection signal is generated based on one end of the channel, and compared with a predetermined level higher than the ground reference voltage. An excitation time is a period when the detection signal exceeds the predetermined level. When the excitation time exceeds a preset time, the control signal is precharged to a sub-threshold voltage between the threshold voltage and the ground reference voltage.