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.

Date of Patent:
May. 29, 2018

Filed:

May. 31, 2016
Applicant:

Cirrus Logic International Semiconductor Ltd., Edinburgh, GB;

Inventors:

Zhaohui He, Austin, TX (US);

Eric J. King, Dripping Springs, TX (US);

Siddharth Maru, Austin, TX (US);

John L. Melanson, Austin, TX (US);

Assignee:

Cirrus Logic, Inc., Austin, TX (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/217 (2006.01); H03F 1/32 (2006.01); H03F 3/183 (2006.01); H03F 3/45 (2006.01); H04R 3/00 (2006.01); H03F 1/02 (2006.01);
U.S. Cl.
CPC ...
H03F 1/32 (2013.01); H03F 3/183 (2013.01); H03F 3/217 (2013.01); H03F 3/2173 (2013.01); H03F 3/45076 (2013.01); H04R 3/00 (2013.01); H03F 1/0211 (2013.01); H03F 1/0227 (2013.01); H03F 2200/03 (2013.01); H03F 2203/45034 (2013.01); H04R 2420/03 (2013.01);
Abstract

A switching power stage for producing a load voltage at a load output of the switching power stage, wherein the load output comprises a first load terminal having a first load voltage and a second load terminal having a second load voltage such that the load voltage comprises a difference between the first and the second load voltages, that may include: a power converter comprising a power inductor and a plurality of switches, wherein the power converter is configured to drive a power converter output terminal; a linear amplifier configured to drive a linear amplifier output terminal; and a controller for controlling the plurality of switches and the linear amplifier in order to generate the load voltage as a function of an input signal to the controller such that energy delivered to the load output is supplied predominantly by the power converter.


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