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A High-Voltage Class D Audio Amplifier for Dielectric ...
https://orbit.dtu.dk/files/90233616/bare_conf_final.pdf
addresses the issue of a high impedance load, ensuring a linear response over the midrange region of the audio bandwidth (100 Hz – 3.5 kHz). THD+N below 0.1% are reported for the ± 300 V prototype amplifier producing a maximum of 125 Var at a peak efficiency of 95 %. INTRODUCTION Class D audio amplifiers are commonly used in sound
High-voltage class-D direct-drive audio amplifier for ...
https://ieeexplore.ieee.org/document/6292085
High-voltage class-D direct-drive audio amplifier for electrostatic loudspeakers. Abstract: Electrostatic loudspeakers (ESLs) are capable of low distortion and have desirably flat frequency response within the audio frequency range. In this paper, a novel approach is proposed for audio amplification using a high-voltage direct-digital solid-state class-D amplifier as a …
Class D Audio Power Amplifiers - Digital Input Audio …
https://www.st.com/en/automotive-infotainment-and-telematics/automotive-class-d-audio-power-amplifiers.html
New single-channel Class-D amplifiers with unique diagnostic matrix ensures high-end audio performance Featuring advanced diagnostics, high efficiency and a unique load current monitor feature to ensure high system reliability, FDA803D and FDA903D are the latest amplifiers in our FDA80x family of automotive Class-D audio power amplifiers.
Class D Audio Amplifiers: What, Why, and How | Mouser
https://www.mouser.com/applications/audio-class-d-amplifiers/
For an audio amplifier with 10-W P LOADmax, an average P LOAD 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.
Designing Practical High Performance Class D Audio …
http://www.irf.com/product-info/audio/classdtutorial606.pdf
Class D Amplifier •Class D amplifier employs MOSFETs which are either ON or OFF state. Therefore ideally 100% efficiency can be achieved. •PWM technique is used to express analog audio signals with ON or OFF states in output devices. •A loss in the switching device caused by 1)finite transition speed, 2)ON state resistance and 3)gate charge. +VCC
TAS6584-Q1 data sheet, product information and support ...
https://www.ti.com/product/TAS6584-Q1
The TAS6584-Q1 is a four-channel, digital-input, high-voltage, Class-D audio amplifier that supports up to 45-V supply voltage. In combination with up to 10-A output current, this device delivers maximum output power and high fidelity audio in high and low impedance loads.
High voltage Class D | diyAudio
https://www.diyaudio.com/community/threads/high-voltage-class-d.103525/
I had (and still have) an interest in designing a UCD-style Class-D amplifier capable of driving 100V-line loudspeaker systems without requiring a step-up transformer on the output. This requires a amplifier that will swing in excess of 300V pk-pk at the output.
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