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:
Nov. 02, 2011
David Zimlich, San Diego, CA (US);
Jean-christophe Berchtold, Carlsbad, CA (US);
Joseph Hubert Colles, Bonsall, CA (US);
David E. Jones, Cedar Rapids, IA (US);
Chris Levesque, Fountain Valley, CA (US);
William David Southcombe, San Diego, CA (US);
Scott Yoder, Fuquay Varina, NC (US);
Terry J. Stockert, Cedar Rapids, IA (US);
David Zimlich, San Diego, CA (US);
Jean-Christophe Berchtold, Carlsbad, CA (US);
Joseph Hubert Colles, Bonsall, CA (US);
David E. Jones, Cedar Rapids, IA (US);
Chris Levesque, Fountain Valley, CA (US);
William David Southcombe, San Diego, CA (US);
Scott Yoder, Fuquay Varina, NC (US);
Terry J. Stockert, Cedar Rapids, IA (US);
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
At least a first shunt switching element and switching control circuitry of a first switching power supply are disclosed. At least the first shunt switching element is coupled between a ground and an output inductance node of the first switching power supply. The first switching power supply provides a buck output signal from the output inductance node. The switching control circuitry selects one of an ON state and an OFF state of the first shunt switching element. When the buck output signal is above a first threshold, the switching control circuitry is inhibited from selecting the ON state. The first switching power supply provides a first switching power supply output signal based on the buck output signal. By using feedback based on the buck output signal, the switching control circuitry may refine the timing of switching between series switching elements and shunt switching elements to increase efficiency.