Design and Analysis of Digital Audio Amplifier Using ZVS PWM Converter

W.H. Lau; Henry S. H. Chung; C. M. Wu; N. K. Poon

doi:10.1109/ISCAS.1999.777549

Design and Analysis of Digital Audio Amplifier Using ZVS PWM Converter

W.H. Lau
, Henry S. H. Chung
, C. M. Wu
, N. K. Poon

Research output: Journal Publications and Reviews › RGC 22 - Publication in policy or professional journal

Abstract

This paper presents a simple methodology to convert a hard-switched pulse-width-modulated (PWM) H-bridge converter used in classical digital audio amplifiers into a zero-voltage-switching (ZVS) converter. ZVS is simply achieved by connecting an L-C series branch across the converter output. ZVS occurs during the dead time interval of the PWM signals, giving an effective improvement in the conversion efficiency, output frequency spectrum, and total harmonic distortion (THD). Simplified design procedures are given for choosing the value of the components. A prototype having output power of 20 W and with switching frequency of 705.6 kHz has been built and the experimental results are presented.

Original language	English
Pages (from-to)	218-221
Journal	Proceedings - IEEE International Symposium on Circuits and Systems
Volume	5
DOIs	https://doi.org/10.1109/ISCAS.1999.777549
Publication status	Published - 1999
Event	1999 IEEE International Symposium on Circuits and Systems (ISCAS '99) - Renaissance Orlando Resort, Orlando, United States Duration: 30 May 1999 → 2 Jun 1999

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@article{d97923a815b14d978dd9018472e691e1,

title = "Design and Analysis of Digital Audio Amplifier Using ZVS PWM Converter",

abstract = "This paper presents a simple methodology to convert a hard-switched pulse-width-modulated (PWM) H-bridge converter used in classical digital audio amplifiers into a zero-voltage-switching (ZVS) converter. ZVS is simply achieved by connecting an L-C series branch across the converter output. ZVS occurs during the dead time interval of the PWM signals, giving an effective improvement in the conversion efficiency, output frequency spectrum, and total harmonic distortion (THD). Simplified design procedures are given for choosing the value of the components. A prototype having output power of 20 W and with switching frequency of 705.6 kHz has been built and the experimental results are presented.",

author = "W.H. Lau and Chung, \{Henry S. H.\} and Wu, \{C. M.\} and Poon, \{N. K.\}",

year = "1999",

doi = "10.1109/ISCAS.1999.777549",

language = "English",

volume = "5",

pages = "218--221",

journal = "Proceedings - IEEE International Symposium on Circuits and Systems",

issn = "0271-4310",

publisher = "IEEE",

note = "1999 IEEE International Symposium on Circuits and Systems (ISCAS '99) ; Conference date: 30-05-1999 Through 02-06-1999",

}

TY - JOUR

T1 - Design and Analysis of Digital Audio Amplifier Using ZVS PWM Converter

AU - Lau, W.H.

AU - Chung, Henry S. H.

AU - Wu, C. M.

AU - Poon, N. K.

PY - 1999

Y1 - 1999

N2 - This paper presents a simple methodology to convert a hard-switched pulse-width-modulated (PWM) H-bridge converter used in classical digital audio amplifiers into a zero-voltage-switching (ZVS) converter. ZVS is simply achieved by connecting an L-C series branch across the converter output. ZVS occurs during the dead time interval of the PWM signals, giving an effective improvement in the conversion efficiency, output frequency spectrum, and total harmonic distortion (THD). Simplified design procedures are given for choosing the value of the components. A prototype having output power of 20 W and with switching frequency of 705.6 kHz has been built and the experimental results are presented.

AB - This paper presents a simple methodology to convert a hard-switched pulse-width-modulated (PWM) H-bridge converter used in classical digital audio amplifiers into a zero-voltage-switching (ZVS) converter. ZVS is simply achieved by connecting an L-C series branch across the converter output. ZVS occurs during the dead time interval of the PWM signals, giving an effective improvement in the conversion efficiency, output frequency spectrum, and total harmonic distortion (THD). Simplified design procedures are given for choosing the value of the components. A prototype having output power of 20 W and with switching frequency of 705.6 kHz has been built and the experimental results are presented.

UR - https://www.scopus.com/pages/publications/0032651346

UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-0032651346&origin=recordpage

U2 - 10.1109/ISCAS.1999.777549

DO - 10.1109/ISCAS.1999.777549

M3 - RGC 22 - Publication in policy or professional journal

SN - 0271-4310

VL - 5

SP - 218

EP - 221

JO - Proceedings - IEEE International Symposium on Circuits and Systems

JF - Proceedings - IEEE International Symposium on Circuits and Systems

T2 - 1999 IEEE International Symposium on Circuits and Systems (ISCAS '99)

Y2 - 30 May 1999 through 2 June 1999

ER -

Design and Analysis of Digital Audio Amplifier Using ZVS PWM Converter

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