A Class-D output bridge with dynamic dead-time, small delay and reduced EMI

Timucin David Karaca; Mario Auer

A Class-D output bridge with dynamic dead-time, small delay and reduced EMI

Timucin David Karaca, Mario Auer

Institut für Elektronik (4390)

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

Abstract

Power efficient Class-D audio amplifiers are very popular in mobile applications, despite the potential electromagnetic interference (EMI) caused by their output stage. Going to higher power levels, more effort has to be put into the reduction of EMI without sacrificing audio performance and efficiency. This work presents a Class-D output stage with an adaptive driver concept. The proposed driver monitors each output transition and dynamically adjusts dead-time and driver strength to reduce EMI while maintaining high audio fidelity. The presented concept is implemented in a 180nm CMOS technology and verified by measurement.

Originalsprache	englisch
Titel	IEEE International Symposium on Circuits and Systems (ISCAS)
Herausgeber (Verlag)	Institute of Electrical and Electronics Engineers
ISBN (elektronisch)	978-1-4673-6853-7
Publikationsstatus	Veröffentlicht - 2017
Veranstaltung	IEEE International Symposium on Circuits and Systems: ISCAS 2017 - Baltimore, USA / Vereinigte Staaten Dauer: 28 Mai 2017 → 31 Mai 2017

Konferenz

Konferenz	IEEE International Symposium on Circuits and Systems
Kurztitel	ISCAS
Land/Gebiet	USA / Vereinigte Staaten
Ort	Baltimore
Zeitraum	28/05/17 → 31/05/17

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

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title = "A Class-D output bridge with dynamic dead-time, small delay and reduced EMI",

abstract = "Power efficient Class-D audio amplifiers are very popular in mobile applications, despite the potential electromagnetic interference (EMI) caused by their output stage. Going to higher power levels, more effort has to be put into the reduction of EMI without sacrificing audio performance and efficiency. This work presents a Class-D output stage with an adaptive driver concept. The proposed driver monitors each output transition and dynamically adjusts dead-time and driver strength to reduce EMI while maintaining high audio fidelity. The presented concept is implemented in a 180nm CMOS technology and verified by measurement.",

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AU - Karaca, Timucin David

AU - Auer, Mario

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AB - Power efficient Class-D audio amplifiers are very popular in mobile applications, despite the potential electromagnetic interference (EMI) caused by their output stage. Going to higher power levels, more effort has to be put into the reduction of EMI without sacrificing audio performance and efficiency. This work presents a Class-D output stage with an adaptive driver concept. The proposed driver monitors each output transition and dynamically adjusts dead-time and driver strength to reduce EMI while maintaining high audio fidelity. The presented concept is implemented in a 180nm CMOS technology and verified by measurement.

M3 - Conference paper

BT - IEEE International Symposium on Circuits and Systems (ISCAS)

PB - Institute of Electrical and Electronics Engineers

T2 - IEEE International Symposium on Circuits and Systems

Y2 - 28 May 2017 through 31 May 2017

ER -

A Class-D output bridge with dynamic dead-time, small delay and reduced EMI

Abstract

Konferenz

Fields of Expertise

Fingerprint

Projekte

LEAD - LEAD-Analoger Schaltungsentwurf zur Reduktion der Störemissionen

Dieses zitieren