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Output filter Design for class D

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root2hell

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how to set corner frequency for an output filter of a class D amplifier.
what would be frequency of triangular waveform for PWM.
 

The triangle wave frequency of most class-D PWM audio amplifiers is 400kHz. Look at the datasheets of many class-D PWM amplifier ICs at Texas Instruments.
The output filter for the audio amplifier passes 20kHz audio but cuts all frequencies above it.
 

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