Invention Grant
- Patent Title: Class D amplifier circuitry
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Application No.: US17186741Application Date: 2021-02-26
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Publication No.: US11588452B2Publication Date: 2023-02-21
- Inventor: John P. Lesso , David P. Singleton
- Applicant: Cirrus Logic International Semiconductor Ltd.
- Applicant Address: GB Edinburgh
- Assignee: Cirrus Logic International Semiconductor Ltd.
- Current Assignee: Cirrus Logic International Semiconductor Ltd.
- Current Assignee Address: GB Edinburgh
- Agency: Jackson Walker L.L.P.
- Main IPC: H03F3/217
- IPC: H03F3/217 ; H03F1/32

Abstract:
Class D amplifier circuitry comprising: modulator circuitry; and output stage circuitry, wherein the modulator circuitry is configured to: receive an input signal and first and second carrier signals, wherein the second carrier signal is offset in amplitude with respect to the first carrier signal; generate first and second modulated output signals, each of the first and second modulated output signals being based on the input signal and the first and second carrier signals; and generate a plurality of control signals for the output stage circuitry per signal period of the modulated output signals, wherein the plurality of control signals are based on the first and second modulated output signals, and wherein at least one of the plurality of control signals per signal period comprises a signal level transition.
Public/Granted literature
- US20220278658A1 CLASS D AMPLIFIER CIRCUITRY Public/Granted day:2022-09-01
Information query
IPC分类: