Digitally assisted EMI-reduction techniques for Class-D amplifiers with digital control

Mario Auer; Timuçin Karaca

Digitally assisted EMI-reduction techniques for Class-D amplifiers with digital control

Mario Auer, Timuçin Karaca

Institut für Elektronik (4390)

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Abstract

Class-D amplifiers are known for their excellent efficiency but also for their high potential to produce electromagnetic interference (EMI). Typically Class-D amplifiers operate in the analog domain, but there is a clear trend to replace some of the functionality by digital circuitry, requiring new approaches to reduce their emissions. In this paper a prototype of a digitally controlled Class-D amplifier is used to present digital techniques to reduce EMI with various methods. A new method is realized and the advantages of digitally assisted EMI reduction methods are demonstrated. Measurement results show that a considerable (up to 17.8 dB) reduction of EMI is possible taking advantage of digitally assisted EMI reduction techniques while delivering state-of-the art audio performance.

Originalsprache	englisch
Titel	Proceedings of the 2017 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMCCompo 2017
Herausgeber (Verlag)	Institute of Electrical and Electronics Engineers
Seiten	33-38
Seitenumfang	6
ISBN (elektronisch)	9781538626894
Publikationsstatus	Veröffentlicht - 31 Juli 2017
Veranstaltung	11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits: EMC Compo 2017 - St. Petersburg, Russland Dauer: 4 Juli 2017 → 8 Juli 2017 Konferenznummer: 11

Konferenz

Konferenz	11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits
Kurztitel	EMC Compo 2017
Land/Gebiet	Russland
Ort	St. Petersburg
Zeitraum	4/07/17 → 8/07/17

ASJC Scopus subject areas

Elektrotechnik und Elektronik
Sicherheit, Risiko, Zuverlässigkeit und Qualität
Elektronische, optische und magnetische Materialien

Fields of Expertise

Information, Communication & Computing

LEAD - LEAD-Analoger Schaltungsentwurf zur Reduktion der Störemissionen
Auer, M.
1/08/14 → 31/07/17
Projekt: Forschungsprojekt

Dieses zitieren

Digitally assisted EMI-reduction techniques for Class-D amplifiers with digital control. / Auer, Mario; Karaca, Timuçin.
Proceedings of the 2017 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMCCompo 2017. Institute of Electrical and Electronics Engineers, 2017. S. 33-38 7998077.

Publikation: Beitrag in Buch/Bericht/Konferenzband › Beitrag in einem Konferenzband › Begutachtung

Auer, M & Karaca, T 2017, Digitally assisted EMI-reduction techniques for Class-D amplifiers with digital control. in Proceedings of the 2017 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMCCompo 2017., 7998077, Institute of Electrical and Electronics Engineers, S. 33-38, 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, St. Petersburg, Russland, 4/07/17.

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title = "Digitally assisted EMI-reduction techniques for Class-D amplifiers with digital control",

abstract = "Class-D amplifiers are known for their excellent efficiency but also for their high potential to produce electromagnetic interference (EMI). Typically Class-D amplifiers operate in the analog domain, but there is a clear trend to replace some of the functionality by digital circuitry, requiring new approaches to reduce their emissions. In this paper a prototype of a digitally controlled Class-D amplifier is used to present digital techniques to reduce EMI with various methods. A new method is realized and the advantages of digitally assisted EMI reduction methods are demonstrated. Measurement results show that a considerable (up to 17.8 dB) reduction of EMI is possible taking advantage of digitally assisted EMI reduction techniques while delivering state-of-the art audio performance.",

keywords = "Characterization, Class-D Audio Amplifier, Digital Class-D, EMC, EMI, Prototyping, Spread Spectrum Modulation",

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note = "11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits : EMC Compo 2017, EMC Compo 2017 ; Conference date: 04-07-2017 Through 08-07-2017",

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AU - Auer, Mario

AU - Karaca, Timuçin

N1 - Conference code: 11

PY - 2017/7/31

Y1 - 2017/7/31

N2 - Class-D amplifiers are known for their excellent efficiency but also for their high potential to produce electromagnetic interference (EMI). Typically Class-D amplifiers operate in the analog domain, but there is a clear trend to replace some of the functionality by digital circuitry, requiring new approaches to reduce their emissions. In this paper a prototype of a digitally controlled Class-D amplifier is used to present digital techniques to reduce EMI with various methods. A new method is realized and the advantages of digitally assisted EMI reduction methods are demonstrated. Measurement results show that a considerable (up to 17.8 dB) reduction of EMI is possible taking advantage of digitally assisted EMI reduction techniques while delivering state-of-the art audio performance.

AB - Class-D amplifiers are known for their excellent efficiency but also for their high potential to produce electromagnetic interference (EMI). Typically Class-D amplifiers operate in the analog domain, but there is a clear trend to replace some of the functionality by digital circuitry, requiring new approaches to reduce their emissions. In this paper a prototype of a digitally controlled Class-D amplifier is used to present digital techniques to reduce EMI with various methods. A new method is realized and the advantages of digitally assisted EMI reduction methods are demonstrated. Measurement results show that a considerable (up to 17.8 dB) reduction of EMI is possible taking advantage of digitally assisted EMI reduction techniques while delivering state-of-the art audio performance.

KW - Characterization

KW - Class-D Audio Amplifier

KW - Digital Class-D

KW - EMC

KW - EMI

KW - Prototyping

KW - Spread Spectrum Modulation

M3 - Conference paper

AN - SCOPUS:85028506447

SP - 33

EP - 38

BT - Proceedings of the 2017 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits, EMCCompo 2017

PB - Institute of Electrical and Electronics Engineers

T2 - 11th International Workshop on the Electromagnetic Compatibility of Integrated Circuits

Y2 - 4 July 2017 through 8 July 2017

ER -

Digitally assisted EMI-reduction techniques for Class-D amplifiers with digital control

Abstract

Konferenz

ASJC Scopus subject areas

Fields of Expertise

Fingerprint

Projekte

LEAD - LEAD-Analoger Schaltungsentwurf zur Reduktion der Störemissionen

Dieses zitieren