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:
Jan. 09, 2019
Leadtrend Technology Corporation, Zhubei, Hsinchu County, TW;
Kuan Hsien Chou, Zhubei, TW;
Fong Cheng Yang, Zhubei, TW;
LEADTREND TECHNOLOGY CORPORATION, Zhubei, Hsinchu County, TW;
Abstract
A power controller provides open-circuit protection for a power supply when an open circuit occurs between a ground end of an auxiliary winding and an input ground. The power controller provides a PWM signal to determine an ON time and an OFF time of a power switch connected in series between an input voltage and the input ground. A deviation detector in the power controller detects a winding voltage at a floating end of the auxiliary winding during the ON time, and asserts an open protection signal when a variation of the winding voltage during the ON time fits a first predetermined condition, so as to keep the power switch turned OFF and provide the open-circuit protection.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile