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:
Aug. 25, 2020
Filed:
Nov. 14, 2017
Applicant:
Signify Holding B.v., Eindhoven, NL;
Inventors:
Georg Sauerlander, Aachen, DE;
Christian Hattrup, Wurselen, DE;
Assignee:
SIGNIFY HOLDING B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B 45/37 (2020.01); H05B 45/10 (2020.01); H02M 1/42 (2007.01); H02M 7/219 (2006.01);
U.S. Cl.
CPC ...
H05B 45/37 (2020.01); H02M 1/4225 (2013.01); H02M 7/219 (2013.01); H05B 45/10 (2020.01);
Abstract
An AC/DC converter and conversion method are provided, in which an AC input is rectified and shaped by a waveform shaping capacitor. A current source circuit is used to provide the output current to the output load which has a parallel bulk capacitor. The current source circuit is switched on and off with timing which is dependent on the phase of the AC input signal. This enables a relatively high power factor, for example between 0.7 and 0.9, with low cost circuitry with few components.