A Class-D amplifier powered by embedded single-inductor bipolar-output power module with low common noise and dynamic voltage boosting technique

Shin Hao Chen*, Kuei Liang Lin, Shao Siang Ng, Ke-Horng Chen, Chin Long Wey, Sheng Kang, Kevin Cheng, Li Ren Huang, Chao Jen Huang, Hsin Yu Luo

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

This paper proposes a high efficiency Class-D amplifier (CDA) with embedded single-inductor bipolar output (SIBO) power module. The characteristics of SIBO converter's bipolar outputs not only suppress equivalent common mode noise but also remove several large external bulky components in conventional boost supply CDA systems. Since bipolar outputs in the SIBO provide independent driving capability, CDA is capable of operating in both single-ended (SE) and bridge-tide load (BTL) configurations. Furthermore, the proposed dynamic voltage boosting (DVB) technique adjusts the SIBO output voltage level according to the CDA's output level with 5% power efficiency improvement. Peak total harmonic distortion plus noise (THD+N) performance is 0.012%. Peak power efficiency of SIBO and CDA are 89% and 93.2%, respectively.

Original languageEnglish
Title of host publicationESSCIRC 2014 - Proceedings of the 40th European Solid-State Circuit Conference
EditorsGaudenzio Meneghesso, Pietro Andreani, Andrea Bevilacqua
PublisherIEEE Computer Society
Pages315-318
Number of pages4
ISBN (Electronic)9781479956944
DOIs
StatePublished - 31 Oct 2014
Event40th European Solid-State Circuit Conference, ESSCIRC 2014 - Venezia Lido, Italy
Duration: 22 Sep 201426 Sep 2014

Publication series

NameEuropean Solid-State Circuits Conference
ISSN (Print)1930-8833

Conference

Conference40th European Solid-State Circuit Conference, ESSCIRC 2014
CountryItaly
CityVenezia Lido
Period22/09/1426/09/14

Keywords

  • Class-D audio amplifier
  • dynamic voltage boosting
  • single-inductor bipolar output converter
  • SoC system

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