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:
Apr. 15, 2014
Filed:
Nov. 03, 2011
William David Southcombe, San Diego, CA (US);
Chris Levesque, Fountain Valley, CA (US);
Jean-christophe Berchtold, Carlsbad, CA (US);
Wonseok OH, Chandler, AZ (US);
David E. Jones, Cedar Rapids, IA (US);
Scott Yoder, Fuquay Varina, NC (US);
Terry J. Stockert, Cedar Rapids, IA (US);
William David Southcombe, San Diego, CA (US);
Chris Levesque, Fountain Valley, CA (US);
Jean-Christophe Berchtold, Carlsbad, CA (US);
Wonseok Oh, Chandler, AZ (US);
David E. Jones, Cedar Rapids, IA (US);
Scott Yoder, Fuquay Varina, NC (US);
Terry J. Stockert, Cedar Rapids, IA (US);
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
A charge pump of a PA bias power supply, PA bias circuitry, and a process to optimize efficiency of the PA bias power supply are disclosed. The charge pump operates in one of multiple bias supply pump operating modes, which include at least a bias supply pump-up operating mode and a bias supply bypass operating mode. The process prevents selection of the bias supply bypass operating mode unless a DC power supply voltage is adequate to allow the PA bias circuitry to provide minimum output regulation voltage at a specified current. Otherwise, the bias supply pump-up operating mode is selected. The charge pump operates more efficiently in the bias supply bypass operating mode than in the bias supply pump-up operating mode; therefore, selection of the bias supply bypass operating mode, when possible, increases efficiency.