Posts Tagged ‘Class-D amplifier’

App note: Current sense amplifiers in class-D audio subsystems

Sunday, May 27th, 2018

App note from Texas Instruments about output current sensing in class-D amplfiers. Link here (PDF) Current sensing in audio subsystems are widely used in conjunction with CLASS-D amplifiers for diagnostics or to provide speaker current feedback to the DSP for speaker enhancement to emulate smartamp. The most expensive component in...

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App note: Fundamentals of operation and recent developments of class D amplifiers

Sunday, April 8th, 2018

Good read about class D amplfiers from MAXIM Integrated. Link here (PDF) A Class D amplifier's high efficiency makes it ideal for portable and compact high-power applications. Traditional Class D amplifiers require an external lowpass filter to extract the audio signal from the pulse-width-modulated (PWM) output waveform. Many modern Class...

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App note: Class D audio amplifier performance relationship to MOSFET parameters

Sunday, September 17th, 2017

Application note from International Rectifier on MOSFET paremeters to consider when designing a Class D audio amplifier. Link here (PDF) Class D audio amplifier is a switching amplifier that consists in a pulse width modulator (with switching frequency in order of several hundred kHz), a power bridge circuit and a...

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App note: Class D Audio Amplifier Basics

Sunday, March 23rd, 2014

A good read about class D Audio Amplifier, an app note from International Rectifier A Class D audio amplifier is basically a switching amplifier or PWM amplifier. There are a number of different classes of amplifiers. This application note takes a look at the definitions for the main classifications.

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Class D amplifier assembled

Saturday, June 4th, 2011

NBitWonder built a class-D amplifier Class-D amplifier is a highly efficient amplifier that operates its output devices as switches instead of as variable resistors.  We posted a highly experimental version of this project last November, and it met with a surprising amount of positive feedback from the DIY community.  Therefore,...

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