Volume 8 Number 2 (Feb. 2013)
Home > Archive > 2013 > Volume 8 Number 2 (Feb. 2013) >
JSW 2013 Vol.8(2): 488-495 ISSN: 1796-217X
doi: 10.4304/jsw.8.2.488-495

The Correction Method for Power Noise in Digital Class D Power Amplifiers

Hui Feng1, Zeqi Yu2

1VLSI Institute, Tongji University, ShangHai, China
2School of Electronics and Information, Northwestern Polytechnical University, Xi’an, China

Abstract—In a digital class D power amplifier, the distortion is introduced into the input signal being amplified in power stage, due to the effect of power supply noise. A method used to eliminate the distortion is presented in the paper. This method is adding correction factors to all integrators of Delta-Sigma modulator, and introducing power supply noise to the input of the class D power amplifier and Delta-Sigma modulator. A design example with the method is presented, and the simulation results indicate this method can eliminate the error introduced by power stage.

Index Terms—power stage, power supply noise, Delta-Sigma modulator, digital class D power amplifier, PWM.

[PDF]

Cite: Hui Feng, Zeqi Yu, "The Correction Method for Power Noise in Digital Class D Power Amplifiers," Journal of Software vol. 8, no. 2, pp. 488-495, 2013.

General Information

  • ISSN: 1796-217X (Online)
  • Frequency:  Quarterly
  • Editor-in-Chief: Prof. Antanas Verikas
  • Executive Editor: Ms. Yoyo Y. Zhou
  • Abstracting/ Indexing: DBLP, EBSCO, CNKIGoogle Scholar, ProQuest, INSPEC(IET), ULRICH's Periodicals Directory, WorldCat, etc
  • E-mail: jsweditorialoffice@gmail.com
  • APC: 500USD
  • Jun 12, 2024 News!

    Vol 19, No 2 has been published with online version   [Click]

  • Jan 04, 2024 News!

    JSW will adopt Article-by-Article Work Flow

  • Apr 01, 2024 News!

    Vol 14, No 4- Vol 14, No 12 has been indexed by IET-(Inspec)     [Click]

  • Apr 01, 2024 News!

    Papers published in JSW Vol 18, No 1- Vol 18, No 6 have been indexed by DBLP   [Click]

  • Mar 01, 2024 News!

    Vol 19, No 1 has been published with online version    [Click]