Determination of over current protection thresholds for class D audio amplifiers

Flemming Nyboe; L Risbo; Pietro Andreani

doi:10.1109/NORCHP.2005.1597005

Determination of over current protection thresholds for class D audio amplifiers

Flemming Nyboe, L Risbo, Pietro Andreani

Department of Electrical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

893 Downloads (Pure)

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.

Original language	English
Title of host publication	Proceedings of 23^rd NORCHIP Conference
Publisher	IEEE
Publication date	2005
Pages	125-128
Article number	1597005
ISBN (Print)	1-4244-0064-3
DOIs	https://doi.org/10.1109/NORCHP.2005.1597005
Publication status	Published - 2005
Event	2005 IEEE 23rd NORCHIP Conference - Oulu, Finland Duration: 21 Nov 2005 → 22 Nov 2005 https://ieeexplore.ieee.org/xpl/conhome/10643/proceeding

Conference

Conference	2005 IEEE 23rd NORCHIP Conference
Country/Territory	Finland
City	Oulu
Period	21/11/2005 → 22/11/2005
Internet address	https://ieeexplore.ieee.org/xpl/conhome/10643/proceeding

Bibliographical note

Copyright: 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

Access to Document

10.1109/NORCHP.2005.1597005

NyboeFinal published version, 2.51 MB

SFX availability

Full text

Cite this

@inproceedings{2444dcdc3f664606b77bc65edd94e281,

title = "Determination of over current protection thresholds for class D audio amplifiers",

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 = "Flemming Nyboe and L Risbo and Pietro Andreani",

note = "Copyright: 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 2005 IEEE 23rd NORCHIP Conference ; Conference date: 21-11-2005 Through 22-11-2005",

year = "2005",

doi = "10.1109/NORCHP.2005.1597005",

language = "English",

isbn = "1-4244-0064-3",

pages = "125--128",

booktitle = "Proceedings of 23rd NORCHIP Conference",

publisher = "IEEE",

address = "United States",

url = "https://ieeexplore.ieee.org/xpl/conhome/10643/proceeding",

}

TY - GEN

T1 - Determination of over current protection thresholds for class D audio amplifiers

AU - Nyboe, Flemming

AU - Risbo, L

AU - Andreani, Pietro

N1 - Copyright: 2005 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

U2 - 10.1109/NORCHP.2005.1597005

DO - 10.1109/NORCHP.2005.1597005

M3 - Article in proceedings

SN - 1-4244-0064-3

SP - 125

EP - 128

BT - Proceedings of 23rd NORCHIP Conference

PB - IEEE

T2 - 2005 IEEE 23rd NORCHIP Conference

Y2 - 21 November 2005 through 22 November 2005

ER -

Determination of over current protection thresholds for class D audio amplifiers

Abstract

Conference

Bibliographical note

Access to Document

SFX availability

Fingerprint

Cite this