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:
Jun. 23, 2026
Filed:
Feb. 14, 2023
Signify Holding B.v., Eindhoven, NL;
Yuhong Fang, Naperville, IL (US);
Bernd Clauberg, Shaumberg, IL (US);
SIGNIFY HOLDING B.V., Eindhoven, NL;
Abstract
A protection circuit for a multi-channel LED luminaire is provided. Each LED channel is powered by a single power supply circuit via a supply signal. In one aspect, a total error circuit compares the total current flowing through each LED channel to a total current limit, and triggers the power supply circuit to adjust the supply signal based on the comparison. This adjustment results in total current flowing through the LED channels to remain constant, while also conforming to the desired lighting output. In another aspect, the comparator circuit compares the total current to the summation of the individual currents flowing through each LED channel to determine if a fault, such as a short circuit, has occurred. Detection of the fault is triggers the power supply to limit or disable the supply signal, limiting damage to the luminaire, and protecting the safety of users.