Invention Grant
- Patent Title: Digital class-D amplifier with analog feedback
- Patent Title (中): 具有模拟反馈功能的数字D类放大器
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Application No.: US14144262Application Date: 2013-12-30
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Publication No.: US09344046B2Publication Date: 2016-05-17
- Inventor: Zhengyu Wang , Iuri Mehr , Jungwoo Song , Xicheng Jiang
- Applicant: Broadcom Corporation
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Fiala & Weaver P.L.L.C.
- Main IPC: H03F3/217
- IPC: H03F3/217

Abstract:
Methods, systems, and apparatuses for detecting and suppressing analog error in an output stage of a digital class-D amplifier are described. In embodiments, the digital class-D amplifier includes a PWM stage, an output stage, and a feedback circuit. The PWM stage receives the signal difference between an input digital signal and a feedback digital signal, generates a digital pulse-width modulated (PWM) signal based thereon, and provides the digital PWM signal as a first component of the digital feedback signal. The output stage receives the digital PWM signal and generates an analog output signal for driving a load responsive to the digital PWM signal. The feedback circuit combines an analog representation of the PWM signal and the analog output signal to generate a second component of the digital feedback signal.
Public/Granted literature
- US20150180430A1 DIGITAL CLASS-D AMPLIFIER WITH ANALOG FEEDBACK Public/Granted day:2015-06-25
Information query
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