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

[41] Self-oscillating DC Current Transformer with Nanocrystalline Core
Grim, Vaclav
Ripka, Pavel
[J]. 2021 IEEE SENSORS, 2021,
[42] Generation of high-voltage pulses in a self-oscillating discharge
Gutorov, K. M.
Vizgalov, I. V.
Kurnaev, V. A.
[J]. PLASMA PHYSICS REPORTS, 2012, 38 (13) : 1050 - 1052
[43] SELF-OSCILLATING CURRENT TRANSDUCER WITH PARALLEL CONVERSION CHANNELS
SUVOROV, GV
TSYTOVICH, LI
OSIPOV, OI
TUSHIN, VP
[J]. INSTRUMENTS AND EXPERIMENTAL TECHNIQUES, 1981, 24 (01) : 117 - 119
[44] CMOS voltage feedback current amplifier
Di Cataldo, Giuseppe
Grasso, Alfio Dario
Pennisi, Salvatore
[J]. 2007 EUROPEAN CONFERENCE ON CIRCUIT THEORY AND DESIGN, VOLS 1-3, 2007, : 13 - 15
[45] Indirect synchronization phenomenon on self-oscillating current controllers
Olivier, Jean-Christophe
Le Claire, Jean-Claude
Loron, Luc
[J]. IECON 2007: 33RD ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY, VOLS 1-3, CONFERENCE PROCEEDINGS, 2007, : 1598 - 1603
[46] Nonlinear modeling of the self-oscillating fluxgate current sensor
Ponjavic, Milan M.
Duric, Radivoje M.
[J]. IEEE SENSORS JOURNAL, 2007, 7 (11-12) : 1546 - 1553
[47] COMPARISON OF LINEAR FEEDBACK SYSTEMS WITH SELF-OSCILLATING ADAPTIVE SYSTEMS
HOROWITZ, IM
[J]. IEEE TRANSACTIONS ON AUTOMATIC CONTROL, 1964, AC 9 (04) : 386 - &
[48] SYNCHRONIZATION THEORY OF DISTRIBUTED SELF-OSCILLATING SYSTEM WITH DELAYED FEEDBACK
AIZATSKII, NI
OSTROVSKII, AO
[J]. ZHURNAL TEKHNICHESKOI FIZIKI, 1992, 62 (11): : 1 - 8
[49] Multimode self-oscillating systems with a filter in a delayed feedback circuit
Kal'yanov, E. V.
Kalinin, V. I.
[J]. JOURNAL OF COMMUNICATIONS TECHNOLOGY AND ELECTRONICS, 2010, 55 (04) : 420 - 428
[50] Comparison between the current feedback amplifier and the modern voltage feedback amplifier
Suciu, Iulia
Ogrutan, Petre Lucian
Pana, Gheorghe
[J]. 2015 IEEE 21ST INTERNATIONAL SYMPOSIUM FOR DESIGN AND TECHNOLOGY IN ELECTRONIC PACKAGING (SIITME), 2015, : 249 - 252

← 1 2 3 4 5 →