Class-D Amplifier Power Stage With PWM Feedback Loop

@article{Lam2013ClassDAP,
  title={Class-D Amplifier Power Stage With PWM Feedback Loop},
  author={Chun Kit Lam and Meng Tong Tan and Stephen M. Cox and Kiat Seng Yeo},
  journal={IEEE Transactions on Power Electronics},
  year={2013},
  volume={28},
  pages={3870-3881}
}
This paper presents a second-order pulsewidth modulation (PWM) feedback loop to improve power supply rejection (PSR) of any open-loop PWM class-D amplifiers (CDAs). PSR of the audio amplifier has always been a key parameter in mobile phone applications. In contrast to class-AB amplifiers, the poor PSR performance has always been the major drawback for CDAs with a half-bridge connected power stage. The proposed PWM feedback loop is fabricated using GLOBALFOUNDRIES' 0.18-μm CMOS process… CONTINUE READING

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References

Publications referenced by this paper.
Showing 1-10 of 28 references

PWM amplifier control loops with minimum aliasing distortion

L. Risbo, C. Neesgaard
Proc. AES 120th Convention, Paris, France, May 2006, p. 6693. • 2006
View 4 Excerpts
Highly Influenced

Discrete-time modeling of continuous-time pulse-width modulator loops

L. Risbo
presented at the 27th Int. AES Conf., Hillerød, Denmark, Sep. 2005. • 2005
View 8 Excerpts
Highly Influenced

Carrier distortion in hysteretic self-oscillating Class-D audio power amplifiers: Analysis and optimization

M.C.W. Høyerby, M.A.E. Andersen
IEEE Trans. Power Electron., vol. 24, no. 3, pp. 714–729, Mar. 2009. • 2009
View 4 Excerpts
Highly Influenced

A Second-Order Class-D Audio Amplifier

SIAM Journal of Applied Mathematics • 2011
View 6 Excerpts

Analysis and design of an analog control loop for digital input class D amplifiers

2011 18th IEEE International Conference on Electronics, Circuits, and Systems • 2011
View 1 Excerpt

Class-D Audio Amplifiers in Mobile Applications

IEEE Transactions on Circuits and Systems I: Regular Papers • 2010
View 2 Excerpts

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