Ferrite bead effect on Class-D amplifier audio quality

Conference object English OPEN
Haddad, Kevin El; Mrad, Roberto; Morel, Florent; Pillonnet, Gael; Vollaire, Christian; Nagari, Angelo; (2014)
  • Publisher: HAL CCSD
  • Related identifiers: doi: 10.1109/MELCON.2014.6820510
  • Subject: [ SPI.NANO ] Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics | Ferrite bead | [SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing | [ SPI.ACOU ] Engineering Sciences [physics]/Acoustics [physics.class-ph] | [SPI]Engineering Sciences [physics] | [SPI.NANO]Engineering Sciences [physics]/Micro and nanotechnologies/Microelectronics | [ SPI.SIGNAL ] Engineering Sciences [physics]/Signal and Image processing | Magnetic material | Audio fre-quency band | [SPI.ACOU]Engineering Sciences [physics]/Acoustics [physics.class-ph] | [SPI.ELEC]Engineering Sciences [physics]/Electromagnetism | [ SPI ] Engineering Sciences [physics] | Harmonics distortion | [ SPI.ELEC ] Engineering Sciences [physics]/Electromagnetism

International audience; This paper studies the effect of ferrite beads on the audio quality of Class-D audio amplifiers. This latter is a switch-ing circuit which creates high frequency harmonics. Generally, a filter is used at the amplifier output for the sake of elect... View more
  • References (12)
    12 references, page 1 of 2

    [1] E. Gaalaas, “Class D Audio Amplifiers: What, Why, and How,” in Analog Dialogue, Jun. 2006.

    [2] M. Berkhout, “Class-D audio amplifiers in mobile applications,” in Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on, may 2009, pp. 1169 -1172.

    [3] R. Cellier, E. Allier, A. Nagari, C. Crippa, R. Bassoli, G. Pillonnet, and N. Abouchi, “A fully differential digital input class d with emi spreading method for mobile application,” in Audio Engineering Society Conference: 37th International Conference: Class D Audio Amplification, Aug 2009. [Online]. Available: http://www.aes.org/elib/browse.cfm?elib=15226

    [4] R. Mrad, F. Morel, G. Pillonnet, C. Vollaire, P. Lombard, and A. Nagari, “N-conductor passive circuit modeling for power converter current prediction and EMI aspect,” Electromagnetic Compatibility, IEEE Transactions on, vol. 55, no. 6, pp. 1169-1177, 2013.

    [5] R. Mrad, F. Morel, G. Pillonnet, C. Vollaire, and A. Nagari, “Integrated class-D audio amplifier virtual test for output EMI filter performance,” in Ph.D. Research in Microelectronics and Electronics (PRIME), 2013 9th Conference on, 2013, pp. 73-76.

    [6] C. Burket, “All ferrite beads are not created equal - understanding the importance of ferrite bead material behavior,” In Compliance Magazine, 2010.

    [7] J. Urabe, K. Fujii, Y. Dowaki, Y. Jito, Y. Matsumoto, and A. Sugiura, “A method for measuring the characteristics of an EMI suppression ferrite core,” Electromagnetic Compatibility, IEEE Transactions on, vol. 48, no. 4, pp. 774-780, 2006.

    [8] J. Urabe, K. Fujii, A. Harun, Y. Matsumoto, and A. Sugiura, “A study of EMI suppression characteristics of ferrite cores,” in Electromagnetic Compatibility, 2006. EMC-Zurich 2006. 17th International Zurich Symposium on, 2006, pp. 622-625.

    [9] C. Rostamzadeh, F. Grassi, and F. Kashefi, “Modeling SMT ferrite beads for SPICE simulation,” in Electromagnetic Compatibility (EMC), 2011 IEEE International Symposium on, 2011, pp. 530-535.

    [10] G. R. Skutt, “High-frequency dimensional effects in ferrite core magnetic devices,” 1996, virginia Polytechnic Institute and State University.

  • Similar Research Results (2)
  • Metrics
    views in OpenAIRE
    views in local repository
    downloads in local repository
Share - Bookmark