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:
Dec. 16, 2014
Filed:
May. 19, 2011
Synchronous buck converter including multi-mode control for light load efficiency and related method
Parviz Parto, Laguna Niguel, CA (US);
Seungbeom Kevin Kim, Cerritos, CA (US);
Amir M. Rahimi, Irvine, CA (US);
Suresh Kariyadan, Irvine, CA (US);
Parviz Parto, Laguna Niguel, CA (US);
Seungbeom Kevin Kim, Cerritos, CA (US);
Amir M. Rahimi, Irvine, CA (US);
Suresh Kariyadan, Irvine, CA (US);
International Rectifier Corporation, El Segundo, CA (US);
Abstract
According to one embodiment, a synchronous buck converter comprises a multi-mode control circuit for detecting a load condition of a variable load, an output stage driven by the multi-mode control circuit, wherein the variable load is coupled to the output stage, and a feedback circuit connected between the output stage and the multi-mode control circuit. The multi-mode control circuit is configured to adjust a current provided by the output stage to the variable load based on the load condition. In one embodiment, the multi-mode control circuit selectably uses one of at least a first control mode and a second control mode according to the load condition, wherein the first control mode is a pulse-width modulation (PWM) mode selected for switching efficiency when the load condition is heavy and the second control mode is an adaptive ON-time (AOT) mode selected for switching efficiency when the load condition is light.