US 12,432,499 B2
Integrated circuits for driving transducers
Ross C. Morgan, Bathgate (GB); Michael Robinson, Edinburgh (GB); and Itisha Tyagi, Austin, TX (US)
Assigned to Cirrus Logic Inc., Austin, TX (US)
Filed by Cirrus Logic International Semiconductor Ltd., Edinburgh (GB)
Filed on Mar. 22, 2023, as Appl. No. 18/188,112.
Claims priority of provisional application 63/323,747, filed on Mar. 25, 2022.
Prior Publication US 2023/0328439 A1, Oct. 12, 2023
Int. Cl. H04R 5/04 (2006.01); H04R 3/12 (2006.01); H04R 5/02 (2006.01); H04S 1/00 (2006.01); H03F 3/187 (2006.01)
CPC H04R 5/04 (2013.01) [H04R 3/12 (2013.01); H04R 5/02 (2013.01); H04S 1/007 (2013.01); H03F 3/187 (2013.01); H03F 2200/03 (2013.01); H04R 2430/01 (2013.01)] 28 Claims
OG exemplary drawing
 
27. An integrated circuit (IC), comprising:
a first transducer driver for driving a first transducer;
a second transducer driver for driving a second transducer; and
boost circuitry comprising first and second boost nodes, the boost circuitry configurable to boost a supply voltage received at one or more input pins of the IC to provide first and second boosted voltages to respective first and second transducer drivers via respective first and second boost nodes;
wherein in a first mode, the first and second boosted voltages are equal, and wherein the first and second boost nodes are coupled to a common output node, and in a second mode, the first and second boosted voltages are different, and the first and second boost nodes are isolated from one another.