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. 01, 2026
Filed:
Nov. 10, 2023
Silergy Semiconductor Technology (Hangzhou) Ltd, Hangzhou, CN;
Yongyu Zhong, Hangzhou, CN;
Longqi Wang, Hangzhou, CN;
Silergy Semiconductor Technology (Hangzhou) LTD., Hangzhou, CN;
Abstract
A leakage protection circuit for a lighting system can include: a pull-down current generation circuit configured to generate a pull-down current flowing from a DC bus to a reference voltage; and a control circuit configured to control the pull-down current generation circuit to generate a varied pull-down current during an operating interval, and to determine whether leakage occurs in accordance with a change state of a detection voltage signal representative of a voltage on the DC bus in a detection time interval, where the detection time interval is within the operating interval.