A computationally-efficient PWM technique for digital class-D amplifiers

Chih Min Chang, Jieh-Tsorng Wu

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

We describe a technique that digitally converts a pulse-code-modulated (PCM) signal to a pulse-width-modulation (PWM) signal. This technique is based on the naturally sampled PWM emulation scheme. Its computation is simplified by using empirical models. It provides sufficient accuracy with minimal computation. At 384 kHz sampling rate, the proposed technique can convert a sine wave to a PWM signal and achieve better than -92 dB total harmonic distortion (THD) for a sine wave frequency up to 20 kHz and a sine wave amplitude up to 90% of the full range.

Original languageEnglish
Title of host publicationISCAS 2016 - IEEE International Symposium on Circuits and Systems
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1946-1949
Number of pages4
ISBN (Electronic)9781479953400
DOIs
StatePublished - 29 Jul 2016
Event2016 IEEE International Symposium on Circuits and Systems, ISCAS 2016 - Montreal, Canada
Duration: 22 May 201625 May 2016

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
Volume2016-July
ISSN (Print)0271-4310

Conference

Conference2016 IEEE International Symposium on Circuits and Systems, ISCAS 2016
CountryCanada
CityMontreal
Period22/05/1625/05/16

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