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:
Jun. 09, 2020
Filed:
Mar. 23, 2017
Applicant:
Signify Holding B.v., Eindhoven, NL;
Inventors:
Reinhold Elferich, Aachen, DE;
David Llewellyn John, Willingham, GB;
Assignee:
SIGNIFY HOLDING B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05B 33/08 (2006.01); H02M 1/42 (2007.01); H02M 3/335 (2006.01); H05B 45/37 (2020.01); H02M 1/00 (2006.01);
U.S. Cl.
CPC ...
H02M 1/4241 (2013.01); H02M 1/4233 (2013.01); H02M 3/335 (2013.01); H02M 3/33569 (2013.01); H05B 45/37 (2020.01); H02M 2001/007 (2013.01); Y02B 20/348 (2013.01); Y02B 70/126 (2013.01); Y02B 70/1433 (2013.01);
Abstract
An AC/DC PFC converter comprises an LLC PFC pre-regulator and a DC/DC converter output stage. The output stage has a feedback unit adapted to provide a feedback signal (in addition to the conventional feedback of the bus voltage error) to the control circuit of the PFC pre-regulator for modulating the controlled output voltage of the PFC pre-regulator in dependence on the output power and/or the input current and voltage. In this way, the total harmonic distortion of the input of the converter can be reduced by controlling the gate switching in the PFC pre-regulator.