DocumentCode
2639699
Title
New concept for class D audio amplifiers for lower cost and better performance
Author
Ikriannikov, A. ; Wilson, N.
Author_Institution
Versatile Power, Campbell, CA, USA
fYear
2011
fDate
9-12 Jan. 2011
Firstpage
23
Lastpage
24
Abstract
This paper presents new concepts for class D amplifiers and similar circuits that improve performance. Inductor current ripple and current stress in output power semiconductors are reduced, decreasing conduction loss and reducing flux density in the magnetics. This also implies decreased weight and size of the output filter and potentially smaller heatsink. Current ripple cancellation also potentially allows lowering switching frequency for higher efficiency without design limitation of a large current ripple in conventional circuits.
Keywords
audio signal processing; audio-frequency amplifiers; low-pass filters; power amplifiers; power semiconductor devices; switching circuits; class D audio amplifiers; current stress; flux density; inductor current ripple cancellation; output filter; output power semiconductor; switching frequency; Art; Inductance; Inductors; Magnetic separation; Switching frequency; Windings;
fLanguage
English
Publisher
ieee
Conference_Titel
Consumer Electronics (ICCE), 2011 IEEE International Conference on
Conference_Location
Las Vegas, NV
ISSN
2158-3994
Print_ISBN
978-1-4244-8711-0
Type
conf
DOI
10.1109/ICCE.2011.5722561
Filename
5722561
Link To Document