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:
Oct. 29, 2019
Filed:
Dec. 21, 2018
Infineon Technologies Austria Ag, Villach, AT;
Xiaowu Gong, Singapore, SG;
Andrey Malinin, Fort Collins, CO (US);
Infineon Technologies Austria AG, Villach, AT;
Abstract
Techniques are provided for controlling a synchronous rectification (SR) switch within a switched-mode power converter. The SR switch rectifies an output voltage of the power converter, and incurs little power loss in doing so. An SR controller generates control signals, including a turn-off trigger, that control conductivity of the SR switch. Voltages provided to the SR controller are divided down, so that the SR controller inputs do not need to support excessively high voltage levels as may be present in the power converter. The divided voltages are integrated to create a volt-second metric that closely tracks current through a winding of the power converter and the SR switch. The volt-second metric is compared against a threshold to determine when to issue an SR switch turn-off trigger.