US 11,658,623 B2
Class D amplifiers
John Paul Lesso, Edinburgh (GB); and Toru Ido, Kanagawa (JP)
Assigned to Cirrus Logic, Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Jul. 19, 2021, as Appl. No. 17/378,861.
Application 17/378,861 is a continuation of application No. 16/740,800, filed on Jan. 13, 2020, granted, now 11,101,778.
Application 16/740,800 is a continuation of application No. 15/982,237, filed on May 17, 2018, granted, now 10,587,232, issued on Mar. 10, 2020.
Prior Publication US 2021/0344311 A1, Nov. 4, 2021
Int. Cl. H03F 3/21 (2006.01); H03F 3/217 (2006.01); H04R 3/00 (2006.01); H04R 29/00 (2006.01); H03F 3/185 (2006.01)
CPC H03F 3/2173 (2013.01) [H04R 3/00 (2013.01); H04R 29/001 (2013.01); H03F 3/185 (2013.01); H03F 2200/03 (2013.01); H03F 2200/165 (2013.01); H03F 2200/168 (2013.01); H03F 2200/267 (2013.01); H04R 2499/11 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A Class D amplifier comprising a controller configured to dynamically adjust an operational switching mode of the Class D amplifier over a range between a Class AD mode and a Class BD mode.