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A high efficiency PWM CMOS class-D audio power amplifier
https://www.researchgate.net/publication/231031372_A_high_efficiency_PWM_CMOS_class-D_audio_power_amplifier
PWM CMOS class-D audio power amplifier is proposed. A rail-to-rail PWM comparator with window function has been embedded in the class-D audio …
PWM Power Audio Amplifier With Voltage/Current Mixed ...
https://www.researchgate.net/publication/3218895_PWM_Power_Audio_Amplifier_With_VoltageCurrent_Mixed_Feedback_for_High-Efficiency_Speakers
In this paper a high efficiency Pulse Width Modulation PWM Complementary Metal Oxide Semiconductor CMOS audio power amplifier is proposed. The original idea is based on the difference close-loop ...
High-Power Audio Amplifiers - TI.com
https://www.ti.com/lit/pdf/slyb229
amplifiers (dashed line), the TPA32xx THD+N (blue) is well below the competition. High-Power Audio The TPA32xx family provides output options from 35 W to 650 W. Start your design by selecting the right part for your audio output power level. Output Power (W) THD+N (%) THD+N vs. Output Power Output Power (W) Clipping No Clipping Early Clipping 0.01 0.01 0.1 1 10
High Performance Digital Feedback - ADX Research
http://adxresearch.com/pdf/high-performance-digital-feedback-pWM.PDF
The PWM amplifier, switching between 300 kHz and 400 kHz, achieves an unweighted dynamic range in excess of 100 dB, linearity in excess of 80 dB, and excellent power supply rejection (PSR) with a large scale audio signal. 1. INTRODUCTION The high power efficiency advantage of switching audio amplifiers has resulted in their widespread use, especially in applications …
PWM Amplifier Circuit - Making Easy Circuits
https://makingcircuits.com/blog/pwm-amplifier-circuit/
A PWM amplifier is an electronic amplifier in which the amplifying devices (transistors, usually MOSFETs) work as electronic switches, rather than as linear gain devices as in other amplifiers. They function by quickly switching to and fro amongst the supply rails, being provided by a modulator using pulse width, pulse density, or related methods to encode the …
TAS5631B data sheet, product information and support | …
https://www.ti.com/product/TAS5631B
The TAS5631B is a high-performance PWM input class-D amplifier with integrated closed-loop feedback technology (known as PurePath HD technology) with the ability to drive up to 300 W (1) stereo into 4-Ω to 8-Ω speakers from a single 50-V supply.
A digital input class-D audio amplifier with sixth-order PWM
http://www.jos.ac.cn/app/article/app/doi/10.1088/1674-4926/34/11/115001?pageType=en
This paper presents an open loop digital class-D audio amplifier with a sixth-order pulse-width modulation (PWM) modulator that generates PWM signal in a sigma-delta loop. The amplifier achieves 110 dB dynamic range (DR), 100 dB signal-to-noise rate (SNR), 0.0056% total harmonic distortion plus noise (THD+N), and 92% efficiency when driving a 32 $\Omega$ load.
True Digital Audio Amplifier TAS5001 Digital Audio PWM ...
http://www.bdtic.com/DataSheet/TI/TAS5001.pdf
The true digital audio amplifier (TDAA) is a new paradigm in digital audio. One TDAA system consists of the TAS5001 PCM-PWM modulator device + TAS5100 PWM power output device. This system accepts a serial PCM digital audio stream and converts it to a 3.3-V PWM audio stream (TAS5001). The TAS5100 device then provides a large-signal PWM output. This digital
High Performance Audio Power Amplifiers
https://bgaudioclub.org/uploads/docs/HPAPA.pdf
High Performance Audio Power Amplifiers for music performance and reproduction Ben Duncan, A.M.I.O.A., A.M.A.E.S., M.C.C.S international consultant in live show ...
Class D Audio Amplifiers: What, Why, and How - Analog …
https://www.analog.com/en/analog-dialogue/articles/class-d-audio-amplifiers.html
For an audio amplifier with 10-W PLOAD max, an average PLOAD of 1 W can be considered a realistic listening level. Under this condition, 282 mW is dissipated inside the Class D output stage, vs. 2.53 W for Class B and 30.2 W for Class A. In this case, the Class D efficiency is reduced to 78%—from 90% at higher power.
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