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

Chien Hung Kuo, Yu Jie Liou

研究成果: 書貢獻/報告類型會議貢獻

摘要

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.

原文英語
主出版物標題Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019
編輯Andrzej Napieralski
發行者Institute of Electrical and Electronics Engineers Inc.
頁面293-297
頁數5
ISBN(電子)9788363578152
DOIs
出版狀態已發佈 - 2019 六月
事件26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019 - Rzeszow, 波兰
持續時間: 2019 六月 272019 六月 29

出版系列

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

會議

會議26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019
國家波兰
城市Rzeszow
期間19/6/2719/6/29

ASJC Scopus subject areas

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

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  • 引用此

    Kuo, C. H., & Liou, Y. J. (2019). A Delta-Sigma Modulator with UPWM Quantizer for Digital Audio Class-D Amplifier. 於 A. Napieralski (編輯), Proceedings of the 26th International Conference "Mixed Design of Integrated Circuits and Systems", MIXDES 2019 (頁 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