A Class D Amplifier Using Current Controlled PWM
碩士 === 國立臺北大學 === 電機工程研究所 === 98 === This paper presents a single-chip digital audio amplifier based on a current controlled pulse width modulator and a power-efficient switching (Class-D) output-stage fabricated in TSMC 0.18-µm standard CMOS process. It has a measured total harmonic distortion (THD...
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ndltd-TW-098NTPU04420082015-10-13T19:35:33Z http://ndltd.ncl.edu.tw/handle/08917668981814968442 A Class D Amplifier Using Current Controlled PWM 使用電流控制脈波寬度調變器之D類放大器 Yuan-Kai Cheng 鄭元凱 碩士 國立臺北大學 電機工程研究所 98 This paper presents a single-chip digital audio amplifier based on a current controlled pulse width modulator and a power-efficient switching (Class-D) output-stage fabricated in TSMC 0.18-µm standard CMOS process. It has a measured total harmonic distortion (THD) at the speaker terminals of less than 0.2%. An efficiency of 86% can be achieved with an 8-Ω speaker. The maximum output power is 191mW (rms) from a single 1.8-V power supply, and the stand-by power consumption is only 1.44mW (load connected). This work demonstrates the feasibility of implementing Class-D amplifiers with a high-end audio performance for portable devices. Hong-Yi Huang 黃弘一 2010 學位論文 ; thesis 134 en_US |
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碩士 === 國立臺北大學 === 電機工程研究所 === 98 === This paper presents a single-chip digital audio amplifier based on a current controlled pulse width modulator and a power-efficient switching (Class-D) output-stage fabricated in TSMC 0.18-µm standard CMOS process. It has a measured total harmonic distortion (THD) at the speaker terminals of less than 0.2%. An efficiency of 86% can be achieved with an 8-Ω speaker. The maximum output power is 191mW (rms) from a single 1.8-V power supply, and the stand-by power consumption is only 1.44mW (load connected). This work demonstrates the feasibility of implementing Class-D amplifiers with a high-end audio performance for portable devices.
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Hong-Yi Huang |
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Hong-Yi Huang Yuan-Kai Cheng 鄭元凱 |
author |
Yuan-Kai Cheng 鄭元凱 |
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Yuan-Kai Cheng 鄭元凱 A Class D Amplifier Using Current Controlled PWM |
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Yuan-Kai Cheng |
title |
A Class D Amplifier Using Current Controlled PWM |
title_short |
A Class D Amplifier Using Current Controlled PWM |
title_full |
A Class D Amplifier Using Current Controlled PWM |
title_fullStr |
A Class D Amplifier Using Current Controlled PWM |
title_full_unstemmed |
A Class D Amplifier Using Current Controlled PWM |
title_sort |
class d amplifier using current controlled pwm |
publishDate |
2010 |
url |
http://ndltd.ncl.edu.tw/handle/08917668981814968442 |
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