DocumentCode
919376
Title
Low cost implementation of filterless class D audio amplifier with constant switching frequency
Author
Kim, Hyoung-Sik ; Jung, Sung-Wook ; Jung, Hwan-Mok ; Shin, Jang-Kyoo ; Choi, Pyung
Author_Institution
Sch. of Electr. Eng. & Comput. Sci., Kyungpook Nat. Univ., Taegu
Volume
52
Issue
4
fYear
2006
Firstpage
1442
Lastpage
1446
Abstract
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
Keywords
audio-frequency amplifiers; pulse width modulation; PSpice simulation; PWM output; constant switching frequency; filterless class D audio amplifier; pulse-width modulated output; Circuit simulation; Costs; Frequency synchronization; Hysteresis; Pulse amplifiers; Pulse generation; Pulse width modulation; Space vector pulse width modulation; Switching frequency; Virtual prototyping;
fLanguage
English
Journal_Title
Consumer Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0098-3063
Type
jour
DOI
10.1109/TCE.2006.273168
Filename
4050079
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