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:
Mar. 13, 2018

Filed:

Nov. 18, 2016
Applicant:

Infineon Technologies Ag, Neubiberg, DE;

Inventors:

Andrea Scenini, Montegrotto Terme, IT;

Adolfo De Cicco, Castel d'Azzano, IT;

Rosario Chiodo, Selvazzano Dentro, IT;

Assignee:

Infineon Technologies AG, Neubiberg, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/00 (2006.01); H05B 33/08 (2006.01); B60Q 1/14 (2006.01); F21V 23/00 (2015.01); F21Y 115/10 (2016.01);
U.S. Cl.
CPC ...
H05B 33/0884 (2013.01); B60Q 1/1415 (2013.01); H05B 33/0809 (2013.01); H05B 33/0815 (2013.01); H05B 33/0845 (2013.01); H05B 33/0851 (2013.01); F21V 23/005 (2013.01); F21Y 2115/10 (2016.08);
Abstract

Current source regulation circuitry that is arranged in a loop with power supply circuitry and current source circuitry. The current source regulation circuitry is configured to control the magnitude of supply voltage output by the power supply circuitry in order to maintain the voltage drop across each one current source of the current source circuitry to within a bounded range of voltage values. The bounded range of voltage values may be defined such that each one current source of the current source circuitry can properly regulate a drive current that is supplied to a corresponding light source coupled thereto, and such that the amount of power dissipated by each current source of the current source circuitry during operation is maintained within an acceptable range.


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