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. 08, 2015
Filed:
Nov. 05, 2013
Applicant:
Cree, Inc., Durham, NC (US);
Inventor:
Qingcong Hu, Morrisville, NC (US);
Assignee:
Cree, Inc., Durham, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 41/28 (2006.01); H02M 3/335 (2006.01); H05B 33/08 (2006.01); H02M 1/00 (2007.01);
U.S. Cl.
CPC ...
H02M 3/33507 (2013.01); H05B 33/0815 (2013.01); H02M 2001/0058 (2013.01); H05B 41/28 (2013.01);
Abstract
Systems and methods are provided for managing switching operation of a power converter, for example and without limitation, for powering LEDs in an efficient manner. According to one aspect, a system for managing a switching operation of a power converter includes an off time control system for managing operation modes of a power converter. The off time control system includes an active device for transmitting a bias signal, where the bias signal is configured for modulating a zero diode current signal for controlling a trigger signal, and a resistive body for discharging the bias signal.