A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier

Chien-Hung Kuo, Yu Jie Liou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a delta-sigma modulator (DSM) with uniform pulse-width modulation (UPWM) quantizer for digital audio class-D power amplifier is presented. A pole-moving approach for Inverse Chebyshev filters is proposed to stabilize the UPWM modulator as well as improve its performance. The characteristics of the saw-Tooth carrier for UPWM quantizer is explored to reduce the output switching rate and the power loss in class-D amplifier in the pulse-density modulation (PDM) case. In the presented single-loop sixth-order UPWM modulator with the ameliorated saw-Tooth carrier, an SNDR of 120 dB within 20-kHz bandwidth can be achieved under full-scale signal input. With the proposed schemes, the highest transfer efficiency of 1 for digital class-D amplifier can also be obtained.

Original languageEnglish
Title of host publicationProceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019
EditorsAndrzej Napieralski
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages293-297
Number of pages5
ISBN (Electronic)9788363578152
DOIs
Publication statusPublished - 2019 Jun 1
Event26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019 - Rzeszow, Poland
Duration: 2019 Jun 272019 Jun 29

Publication series

NameProceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019

Conference

Conference26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019
CountryPoland
CityRzeszow
Period19/6/2719/6/29

Fingerprint

pulse duration modulation
Pulse width modulation
Modulators
modulators
counters
amplifiers
teeth
Chebyshev filters
power loss
power amplifiers
Power amplifiers
Poles
poles
Modulation
bandwidth
Bandwidth
modulation
filters
output
pulses

Keywords

  • class-D amplifier
  • delta-sigma modulator
  • pole-moving
  • pulse-width modulation
  • saw-Tooth

ASJC Scopus subject areas

  • Hardware and Architecture
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Instrumentation

Cite this

Kuo, C-H., & Liou, Y. J. (2019). A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier. In A. Napieralski (Ed.), Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019 (pp. 293-297). [8787135] (Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.23919/MIXDES.2019.8787135

A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier. / Kuo, Chien-Hung; Liou, Yu Jie.

Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019. ed. / Andrzej Napieralski. Institute of Electrical and Electronics Engineers Inc., 2019. p. 293-297 8787135 (Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kuo, C-H & Liou, YJ 2019, A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier. in A Napieralski (ed.), Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019., 8787135, Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019, Institute of Electrical and Electronics Engineers Inc., pp. 293-297, 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019, Rzeszow, Poland, 19/6/27. https://doi.org/10.23919/MIXDES.2019.8787135
Kuo C-H, Liou YJ. A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier. In Napieralski A, editor, Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019. Institute of Electrical and Electronics Engineers Inc. 2019. p. 293-297. 8787135. (Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019). https://doi.org/10.23919/MIXDES.2019.8787135
Kuo, Chien-Hung ; Liou, Yu Jie. / A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier. Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019. editor / Andrzej Napieralski. Institute of Electrical and Electronics Engineers Inc., 2019. pp. 293-297 (Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019).
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