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.

Date of Patent:
Jul. 05, 2022

Filed:

Jun. 10, 2020
Applicant:

Infineon Technologies Ag, Neubiberg, DE;

Inventors:

Maurizio Galvano, Padua, IT;

Alberto Trentin, Telve di Sopra, IT;

Davide Ghedin, Fiesso d'artico, IT;

Fabio Fragiacomo, Montegrotto Terme, IT;

Assignee:

Infineon Technologies AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 47/105 (2020.01); H05B 45/14 (2020.01); H05B 47/25 (2020.01); H05B 45/52 (2020.01); F21S 4/26 (2016.01); H05B 45/3725 (2020.01); F21Y 115/10 (2016.01); F21Y 103/10 (2016.01);
U.S. Cl.
CPC ...
H05B 45/52 (2020.01); F21S 4/26 (2016.01); H05B 45/14 (2020.01); H05B 47/25 (2020.01); F21Y 2103/10 (2016.08); F21Y 2115/10 (2016.08); H05B 45/3725 (2020.01);
Abstract

This disclosure includes systems, methods, and techniques for controlling delivery of power to one or more strings of light-emitting diodes (LEDs). For example, a circuit includes a power converter configured to generate an electrical current, a switching device, and a sensor. The sensor is configured to compare a magnitude of the electrical current to a threshold, and in response to the magnitude exceeding the threshold, cause the switching device to turn on in order to sink a portion of the electrical current to prevent the magnitude of the electrical current from exceeding the threshold. When the switching device is turned on, the electrical current is divided into an undesired electrical current that flows across the switching device and a desired electrical current that flows to the string of LEDs.


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