• DocumentCode
    1861578
  • Title

    A high-efficiency 4×45W car audio power amplifier using load current sharing

  • Author

    Mensink, C. ; van Tuijl, E. ; Gierkink, S. ; Mostert, F. ; van der Zee, R.

  • Author_Institution
    Axiom IC, Enschede, Netherlands
  • fYear
    2010
  • fDate
    16-18 June 2010
  • Firstpage
    61
  • Lastpage
    62
  • Abstract
    A 4×45W (EIAJ) monolithic car audio power amplifier is presented that achieves a power dissipation decrease of nearly 2x over standard class AB operation by sharing load currents between loudspeakers. Output signals are conditioned using a common-mode control loop to allow switch placement between loads with minimal THD increase. A prototype is realized in a SOI bipolar-CMOS-DMOS process with 0.5μm feature size. Die area is 7.5×4.6mm2. THD+N @(1kHz,10W) is 0.05%.
  • Keywords
    CMOS integrated circuits; MMIC amplifiers; power amplifiers; silicon-on-insulator; SOI bipolar-CMOS-DMOS process; common-mode control loop; load current sharing; monolithic car audio power amplifier; power dissipation; size 0.5 mum; standard class AB operation; Bridge circuits; Correlation; Current measurement; Loudspeakers; Power amplifiers; Power dissipation; Switches; audio power amplifier; class AB; efficiency;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    VLSI Circuits (VLSIC), 2010 IEEE Symposium on
  • Conference_Location
    Honolulu, HI
  • Print_ISBN
    978-1-4244-5454-9
  • Type

    conf

  • DOI
    10.1109/VLSIC.2010.5560274
  • Filename
    5560274
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1861578