Class-D amplifier power stage with PWM feedback loop

CK Lam, MT Tan, SM Cox… - IEEE Transactions on …, 2012 - ieeexplore.ieee.org
This paper presents a second-order pulsewidth modulation (PWM) feedback loop to improve
power supply rejection (PSR) of any open-loop PWM class-D amplifiers (CDAs). PSR of the …

A class-G headphone amplifier in 65 nm CMOS technology

A Lollio, G Bollati, R Castello - IEEE Journal of solid-state …, 2010 - ieeexplore.ieee.org
This paper presents a class G amplifier based on a low distortion switching principle
technique called switching currents injection. The switching circuit enables a very smooth …

Intermodulation distortions of bang–bang control class D amplifiers

L Guo, T Ge, J Chang - IEEE Transactions on power …, 2014 - ieeexplore.ieee.org
Audio Class D amplifiers (CDAs) based on bang–bang architecture are arguably the most
power efficient architecture of all CDAs reported to-date due to their sheer hardware …

Conducted EMI of integrated switching audio amplifier for mobile phone applications

SE Adami, R Mrad, F Morel, C Vollaire… - 2011 8th Workshop …, 2011 - ieeexplore.ieee.org
In this paper, conducted EMI measurements of two integrated Class D audio amplifiers are
realized using the EN55022 standard, in order to compare the EMI behavior of two …

A dual-feedforward carrier-modulated second-order class-D amplifier with improved THD

J Yu, MT Tan, WL Goh, SM Cox - IEEE Transactions on Circuits …, 2011 - ieeexplore.ieee.org
The advancement of power MOSFET fabrication technology has aided the reduction of
power stage errors in class-D amplifiers (amps). This reduction reveals intrinsic distortion …

A phase-shift self-oscillating stereo class-D amplifier for battery-powered applications

A Huffenus, G Pillonnet, N Abouchi… - Proceedings of 2010 …, 2010 - ieeexplore.ieee.org
This paper presents a highly efficient stereo audio amplifier, based on a self-oscillating
modulator. This modulation scheme has been analyzed and shows to have a higher …

[PDF][PDF] A simple architecture for high performance class-D audio amplifier with novel RC network as negative feedback loop

NEI Bellili, K Bekhouche - Indones. J. Electr. Eng. Comput. Sci, 2022 - researchgate.net
In this work, we have designed and simulated a proposed architecture and good
performances single-ended class-D audio amplifier (CDA). The proposed circuit is build …

Tutorial review: audio amplifiers in mobile platforms

A Nagari - Analog Integrated Circuits and Signal Processing, 2012 - Springer
Feature phones, smart phones, PDAs and many other similar apparatus are becoming a real
presence in every day's life. This convergence of features broadens the audio demands on …

Switching optimization for class-g audio amplifiers with two power supplies

P Russo, F Yengui, G Pillonnet, S Taupin… - Journal of Circuits …, 2012 - hal.science
This paper presents a system-level method to decrease the power consumption of
integrated audio Class-G amplifiers for mobile phones by using the same implementation of …

A power supply error correction method for single-ended digital audio class D amplifiers

Z Yu, F Wang, Y Fan - International Journal of Electronics, 2016 - Taylor & Francis
In single-ended digital audio class D amplifiers (CDAs), the errors caused by power supply
noise in the power stages degrade the output performance seriously. In this article, a novel …