Low cost implementation of filterless class D audio amplifier with constant switching frequency

被引：12
作者：
Kim, Hyoung-Sik
Jung, Sung-Wook
Jung, Hwan-Mok
Shin, Jang-Kyoo
Choi, Pyung
机构：
[1] Kyungpook Natl Univ, Sch Elect Engn & Comp Sci, Taegu, South Korea
[2] 3S Technol Co LTD, Puchon, Kyonggy, South Korea
来源：
IEEE TRANSACTIONS ON CONSUMER ELECTRONICS | 2006年 / 52卷 / 04期
关键词：
variable hysteresis controller; class D amplifier; constant switching;
D O I：
10.1109/TCE.2006.273168
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：
A new and simple configuration of filterless class D audio amplifier is proposed in this paper. The proposed Filterless class D audio amplifier provides the advantages of both low total system cost and generation of synchronized 3-level pulse-width modulated (PWM) output. Moreover, as a result of hysteresis window variation, a close to constant switching frequency of PWM output is obtained. The proposed filterless class D audio amplifier is verified by the PSpice simulation and prototype circuit experiment(1).
引用
收藏
页码：1442 / 1446
页数：5
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