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

Timucin David Karaca, Mario Auer

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem Konferenzband

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.
Originalspracheenglisch
TitelIEEE International Symposium on Circuits and Systems (ISCAS)
Herausgeber (Verlag)Institute of Electrical and Electronics Engineers
ISBN (elektronisch)978-1-4673-6853-7
PublikationsstatusVeröffentlicht - 2017
VeranstaltungIEEE International Symposium on Circuits and Systems - Baltimore, USA / Vereinigte Staaten
Dauer: 28 Mai 201731 Mai 2017

Konferenz

KonferenzIEEE International Symposium on Circuits and Systems
KurztitelISCAS
LandUSA / Vereinigte Staaten
OrtBaltimore
Zeitraum28/05/1731/05/17

Fields of Expertise

  • Information, Communication & Computing

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    Karaca, T. D., & Auer, M. (2017). A Class-D output bridge with dynamic dead-time, small delay and reduced EMI. in IEEE International Symposium on Circuits and Systems (ISCAS) Institute of Electrical and Electronics Engineers.