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. 05, 2017
Filed:
Mar. 03, 2016
Applicant:
Infineon Technologies Ag, Neubiberg, DE;
Inventors:
Fabrizio Cortigiani, Padua, IT;
Maurizio Galvano, Padua, IT;
Assignee:
Infineon Technologies AG, Neubiberg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/00 (2006.01); H05B 33/08 (2006.01);
U.S. Cl.
CPC ...
H05B 33/0818 (2013.01); H05B 33/0845 (2013.01);
Abstract
A modulation engine for a light-emitting-diode (LED) driver is described that includes an output port, a charge current source, a discharge current source, and an output control unit. The output control unit is configured to generate a modulation signal (e.g., a pulse-width-modulation signal) at the output port by at least alternating, based on a duty cycle of the modulation signal, between coupling the charge current source to the output port and the discharge current source to the output port to linearly shape the charge at the output port in accordance with the duty cycle.