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:
Apr. 25, 2017
Filed:
Sep. 24, 2013
Cirrus Logic, Inc., Austin, TX (US);
Anand Ilango, Austin, TX (US);
Aniruddha Satoskar, Austin, TX (US);
Daniel John Allen, Austin, TX (US);
Bharath Kumar Thandri, Austin, TX (US);
Cirrus Logic, Inc., Austin, TX (US);
Abstract
A method may include providing a power supply voltage to a power supply input of a power amplifier by a charge pump power supply having a select input for selecting an operating mode of the charge pump power supply, such that in a first operating mode, the power supply voltage is equal to a first voltage, and such that in a second operating mode the power supply voltage is equal to a fraction of the first voltage; wherein the power amplifier has an audio input for receiving an audio input signal, and an audio output for providing the output signal, and generates the output signal based on the audio input signal. The method may also include selecting an operating mode of the charge pump power supply based on a magnitude of the power supply voltage and a magnitude of the output signal, such that the charge pump power supply operated in the operating mode having the lowest power supply voltage in which a difference between a magnitude of the power supply voltage and a magnitude of the output signal is more than the predetermined threshold voltage.