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. 26, 2015
Filed:
Apr. 04, 2012
Jinho Choi, Saratoga, CA (US);
Hao Peng, Sunnyvale, CA (US);
Wanfeng Zhang, Palo Alto, CA (US);
Tuyen Doan, San Jose, CA (US);
Jinho Choi, Saratoga, CA (US);
Hao Peng, Sunnyvale, CA (US);
Wanfeng Zhang, Palo Alto, CA (US);
Tuyen Doan, San Jose, CA (US);
Marvell International Ltd., Hamilton, BM;
Abstract
Embodiments include circuits and methods to determine peak current for current regulation. A control signal circuit monitors a current on the primary side of a transformer based a turn on time of a switch coupled to the primary side. The control signal circuit determines whether the monitored current exceeds an over-current protection threshold, and determines a duration that the monitored current exceeds the over-current protection threshold. The control signal circuit determines a peak primary current in the primary side based on the over-current protection threshold, the duration that the monitored current exceeds the over-current protection threshold, and the turn on time of the switch. The control signal circuit controls the turn on time for the switch based on the determined peak primary current.