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Determination of over current protection thresholds for class D audio amplifiers

Nyboe, Flemming; Risbo, Lars and Andreani, Pietro LU (2005) In 23rd NORCHIP Conference, 2005. p.125-128
Abstract
Monolithic class-D audio amplifiers typically feature built-in over current protection circuitry that shuts down the amplifier in case of a short circuit on the output speaker terminals. To minimize cost, the threshold at which the device shuts down must be set just above the maximum current that can flow in the loudspeaker during normal operation. The current required is determined by the complex loudspeaker impedance and properties of the music signals played. This work presents a statistical analysis of peak output currents when playing music on typical loudspeakers for home entertainment.
Please use this url to cite or link to this publication:
author
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
23rd NORCHIP Conference, 2005.
pages
125 - 128
ISBN
1-4244-0064-3
DOI
10.1109/NORCHP.2005.1597005
language
English
LU publication?
no
id
9a6087f5-721e-4312-bd32-e349916720a2 (old id 1051231)
alternative location
http://ieeexplore.ieee.org/iel5/10643/33584/01597005.pdf?tp=&arnumber=1597005&isnumber=33584
date added to LUP
2008-04-01 13:11:06
date last changed
2016-06-29 09:19:52
@inproceedings{9a6087f5-721e-4312-bd32-e349916720a2,
  abstract     = {Monolithic class-D audio amplifiers typically feature built-in over current protection circuitry that shuts down the amplifier in case of a short circuit on the output speaker terminals. To minimize cost, the threshold at which the device shuts down must be set just above the maximum current that can flow in the loudspeaker during normal operation. The current required is determined by the complex loudspeaker impedance and properties of the music signals played. This work presents a statistical analysis of peak output currents when playing music on typical loudspeakers for home entertainment.},
  author       = {Nyboe, Flemming and Risbo, Lars and Andreani, Pietro},
  booktitle    = {23rd NORCHIP Conference, 2005.},
  isbn         = {1-4244-0064-3},
  language     = {eng},
  pages        = {125--128},
  title        = {Determination of over current protection thresholds for class D audio amplifiers},
  url          = {http://dx.doi.org/10.1109/NORCHP.2005.1597005},
  year         = {2005},
}