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:
May. 22, 2018
Filed:
Jun. 02, 2017
Infineon Technologies Austria Ag, Villach, AT;
David Meneses Herrera, Villach, AT;
Matteo-Alessandro Kutschak, Ludmannsdorf, AT;
Infineon Technologies Austria AG, Villach, AT;
Abstract
An LLC converter has a primary side with power switch devices coupled to an LLC tank circuit at a common node, a secondary side with synchronous rectifier switch devices, and a transformer coupling the primary side to the secondary side. In a first mode of operation, the power switch devices and the synchronous rectifier switch devices are switched at a frequency calculated to regulate an output voltage of the LLC converter. In a second mode of operation during light-load conditions in which the output voltage is unregulated, the power switch devices are switched until the output voltage rises to a first level and then turned off until the output voltage falls to a second level below the first level. The synchronous rectifier switch devices are continuously switched in the second mode of operation, irrespective of the state of the output voltage.