A Self-Oscillating Class D Audio Amplifier with Dual Voltage and Current Feedback

被引：0

作者：

Nashit, Salma ^{[1
]}

Adrian, Victor ^{[1
]}

Cui, Keer ^{[1
]}

Quoc-An Mai ^{[1
]}

Gwee, Bah-Hwee ^{[1
]}

Chang, Joseph S. ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Singapore, Singapore

来源：

2014 14TH INTERNATIONAL SYMPOSIUM ON INTEGRATED CIRCUITS (ISIC) | 2014年

关键词：

Class D; audio amplifiers; hysteretic comparator; self-oscillating; Pulse Width Modulation;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We propose a self-oscillating PWM Class D audio amplifier with dual voltage and current feedback. The voltage feedback is taken after the output filter to mitigate any negative effects of the output filter. The current feedback is employed to mitigate the switching ripple voltage and its associated power dissipation. Simulation results using discrete components show that the proposed amplifier achieves the lowest THD+N of 0.04 % at 25 mW output power, and a maximum power efficiency of 94 % at 1.7 W output power with a THD+N of 1.18 %.

引用

页码：480 / 483

页数：4

共 50 条

[31] Oscillator pulling and synchronisation issues in self-oscillating class D power amplifiers
Piessens, T
Steyaert, M
[J]. ESSCIRC 2003: PROCEEDINGS OF THE 29TH EUROPEAN SOLID-STATE CIRCUITS CONFERENCE, 2003, : 529 - 532
[32] Third harmonic distortion calculation of a self-oscillating power amplifier
Yuhua CHENGNianxiong TAN Institute of VLSI DesignZhejiang UniversityHangzhou China
[J]. Journal of Zhejiang University-Science C(Computers & Electronics)., 2011, 12 (04) - 316
[33] Third harmonic distortion calculation of a self-oscillating power amplifier
Yu-hua Cheng
Nian-xiong Tan
[J]. Journal of Zhejiang University SCIENCE C, 2011, 12 : 307 - 316
[34] Self-Oscillating LED Driver With Bus Voltage Regulation
Kohler, Samuel Valerio
Vargas, Diogo Ribeiro
Denardin, Gustavo Weber
Lopes, Juliano de Pelegrini
[J]. 2018 13TH IEEE INTERNATIONAL CONFERENCE ON INDUSTRY APPLICATIONS (INDUSCON), 2018, : 495 - 501
[35] Modeling and Design of L-Complementary Self-Oscillating Class D Inverter with Output Voltage Clamping During Starting
Xiong, Wei
Stankovic, Ana Vladan
Nerone, Louis
[J]. 2011 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE), 2011, : 1132 - 1136
[36] Third harmonic distortion calculation of a self-oscillating power amplifier
Yu-hua CHENG
[J]. Frontiers of Information Technology & Electronic Engineering, 2011, (04) : 307 - 316
[37] Third harmonic distortion calculation of a self-oscillating power amplifier
Cheng, Yu-hua
Tan, Nian-xiong
[J]. JOURNAL OF ZHEJIANG UNIVERSITY-SCIENCE C-COMPUTERS & ELECTRONICS, 2011, 12 (04): : 307 - 316
[38] A High-Voltage Class D Audio Amplifier for Dielectric Elastomer Transducers
Nielsen, Dennis
Knott, Arnold
Andersen, Michael A. E.
[J]. 2014 TWENTY-NINTH ANNUAL IEEE APPLIED POWER ELECTRONICS CONFERENCE AND EXPOSITION (APEC), 2014, : 3278 - 3283
[39] IMPLEMENTING A CLASS D AUDIO AMPLIFIER
O'Shea, Justin
Bowling, Steve
Aloe, Frank
[J]. ELECTRONICS WORLD, 2016, 122 (1966): : 20 - 22
[40] Multimode self-oscillating systems with a filter in a delayed feedback circuit
E. V. Kal’yanov
V. I. Kalinin
[J]. Journal of Communications Technology and Electronics, 2010, 55 : 420 - 428

← 1 2 3 4 5 →