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:
Jan. 23, 2007
Filed:
Dec. 02, 2004
David Dening, Stokesdale, NC (US);
Craig Andrews, Austin, TX (US);
Michael R. Kay, Summerfield, NC (US);
Jackie Johnson, Trinity, NC (US);
Ulrik Riis Madsen, Herning, DK;
David Dening, Stokesdale, NC (US);
Craig Andrews, Austin, TX (US);
Michael R. Kay, Summerfield, NC (US);
Jackie Johnson, Trinity, NC (US);
Ulrik Riis Madsen, Herning, DK;
RF Micro Devices, Inc., Greensboro, NC (US);
Abstract
Power control circuitry that is configurable as either a Low Dropout (LDO) voltage regulator or a switching DC—DC converter for controlling a variable supply voltage provided to a power amplifier of a mobile terminal is provided. The power control circuitry includes an output stage including first and second output transistors, an analog control system, and a digital control system. When in LDO voltage regulator mode, the analog control system provides an analog control signal to the first transistor based on an adjustable power control signal and a feedback signal indicative of the variable supply voltage, and the digital control system operates to disable the second output transistor. When in DC—DC converter mode, an output stage of the analog control system is disabled, and the digital control system provides binary control signals to the first and second transistors based on the adjustable power control signal and the feedback signal.