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. 04, 2013
Filed:
Apr. 30, 2010
Yi He, Singapore, SG;
Tuck Meng Chan, Singapore, SG;
Yong Siang Teo, Singapore, SG;
Xiaowu Gong, Singapore, SG;
Meng Kiat Jeoh, Singapore, SG;
Yi He, Singapore, SG;
Tuck Meng Chan, Singapore, SG;
Yong Siang Teo, Singapore, SG;
Xiaowu Gong, Singapore, SG;
Meng Kiat Jeoh, Singapore, SG;
Infineon Technologies AG, Neubiberg, DE;
Abstract
An embodiment of the invention relates to an LLC power converter including a controller configured to regulate an output characteristic of the power converter by controlling a power converter switching frequency. In a first mode of operation, the controller turns off a secondary-side power switch earlier than a turn-off time of a primary-side power switch by a time difference that is controlled by a resistor coupled to an external circuit node. In a second mode of operation, the controller turns on a secondary-side power switch at substantially the same time as the primary-side power switch, and turns off the secondary-side power switch after a maximum on time that is a nonlinear function of a load current of the power converter. The nonlinear function is a substantially constant function of the load current for a value of the load current higher than a threshold value.