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A Novel Control strategy of the Class-D Stereo Audio Amplifier

Title
A Novel Control strategy of the Class-D Stereo Audio Amplifier
Author
김희준
Keywords
Class-D; Amplifier; Three phase full bridge circuit; Current control
Issue Date
2007-11
Publisher
IEEE
Citation
2007 7th International Conference on Power Electronics and Drive Systems, Page. 943-947
Abstract
This paper presents a class-D stereo audio amplifier that controls directly the current of speakers using three phase full bridge circuit. And a new switching method for the current control of the amplifier is proposed. The proposed switching strategy is an improved version of the dead time minimization method, which can reduce current intermittence that commonly occurs with the conventional dead time minimization method whenever the current changes polarity. Dead time is not always adapted in the proposed method, which makes it different from the conventional practice of applying dead time in every current polarity changing point. In this paper, the specific strategy for the stereo operation is discussed. With the experimental results, usefulness of the control strategy is confirmed.
URI
https://ieeexplore.ieee.org/document/4487818https://repository.hanyang.ac.kr/handle/20.500.11754/107238
ISBN
978-1-4244-0644-9
ISSN
2164-5256; 2164-5264
DOI
10.1109/PEDS.2007.4487818
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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