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, 2023
Filed:
Oct. 05, 2020
Tridonic Gmbh & CO KG, Dornbirn, AT;
Hans Auer, Dornbirn, AT;
Patrick Marte, Dornbirn, AT;
Tridonic GmbH & Co KG, Dornbirn, AT;
Abstract
The invention relates to a power factor correction (PFC) circuit (), comprising an inductor () which is configured to provide a discharge current, a capacitor () which is connected to the inductor () via a switch () and which can be charged with said discharge current, a control unit () which is configured to alternately switch the switch () on and off based on a feedback control, wherein the control unit () has an input interface () for receiving a feedback signal (ZXCS) which represents a discharge voltage of the inductor (), wherein the control unit (), in a DCM mode, is further configured to calculate a switch on time (T) of the switch () which is after a first local minimum of the discharge voltage, and wherein, after switching off the switch (), the control unit is configured to: either switch on the switch () at a next or closest local minimum of the inductor voltage after Ton, in case Ton is less than a directly or indirectly set reference time (T), or close the switch () at T, in case Tis equal to or exceeds T.