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:
Feb. 14, 2017
Filed:
May. 18, 2015
Microchip Technology Incorporated, Chandler, AZ (US);
Andreas Reiter, Feldkirchen-Westerham, DE;
Sean Stacy Steedman, Phoenix, AZ (US);
Lucio Di Jasio, Munich, DE;
Joseph Julicher, Maricopa, AZ (US);
Yong Yuenyongsgool, Gilbert, AZ (US);
MICROCHIP TECHNOLOGY INCORPORATED, Chandler, AZ (US);
Abstract
In a pulse width modulation light emitting diode (LED) controller an error amplifier and output load switch are synchronously controlled to prevent service life shortening current overshoot through the LEDs and slowing discharging currents causing color temperature shifting in the light output from the LEDs. A plurality of switching arrangements for the error amplifier and the compensation network may be provided in a single integrated circuit LED dimming controller, and outputs for controlling a variety of differently configured output power switch combinations for disconnecting or shorting the LEDs, or disconnecting the output capacitor during off times of the modulated dimming control signal.