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:
Mar. 02, 2021
Filed:
Sep. 10, 2019
Infineon Technologies Ag, Neubiberg, DE;
Damiano Sartori, Padua, IT;
Fabrizio Cortigiani, di Vigonza, IT;
Marco Pamato, Schio, IT;
Gernot Unterweger, Latschach, AT;
Infineon Technologies AG, Neubiberg, DE;
Abstract
An electronic circuit and a method are disclosed. The electronic circuit includes an LED circuit, wherein the LED circuit () includes: an input () configured to receive an input voltage (V); a drive circuit (A) connected to the input (); and an LED module (A) connected to the drive circuit (A) and comprising an LED string () with at least one LED. The drive circuit (A) is configured to monitor the LED module (A) for the occurrence of an LED short in the LED string () and to change from a normal mode to a defect mode upon detection of the LED short, and the drive circuit (A) is configured, in the defect mode, to operate the LED string () in at least one defect cycle that includes deactivating the LED string () for a deactivation period, activating the LED string for an activation period, and checking for the persistence of the LED short in the activation period.