US 11,057,727 B2
Dynamic power/current allocation among groups of audio amplifiers and/or haptic drivers
Tian Zhao, Austin, TX (US); and Jeffrey A. May, Dripping Springs, TX (US)
Assigned to CIRRUS LOGIC, INC., Austin, TX (US)
Filed by CIRRUS LOGIC INTERNATIONAL SEMICONDUCTOR, LTD., Edinburgh (GB)
Filed on Aug. 7, 2020, as Appl. No. 16/987,631.
Claims priority of provisional application 62/923,138, filed on Oct. 18, 2019.
Prior Publication US 2021/0120351 A1, Apr. 22, 2021
Int. Cl. H04R 29/00 (2006.01); H04R 3/12 (2006.01); G06F 1/30 (2006.01)
CPC H04R 29/002 (2013.01) [G06F 1/30 (2013.01); H04R 3/12 (2013.01)] 37 Claims
OG exemplary drawing
 
1. An audio or haptic power output system that delivers a plurality of power output signals to corresponding output transducers, comprising:
a plurality of power output stages that generate corresponding ones of the power output signals from a corresponding plurality of input values or signals; and
at least one power management subsystem that controls electrical power or current consumed by the power output stages by comparing measures of a power or current required to generate the individual power output signals to corresponding power or current limits for the power output stages, and limiting the power or current consumed by the individual power output stages if the corresponding measures of the power or current exceed the corresponding power or current limits, wherein the corresponding power or current limits are adjusted dynamically in conformity with the measures of the power or current required to generate the individual power output signals.