Effect of dead time on harmonic distortion in class-D audio power amplifiers

Mosely, I., Mellor, P. H. and Bingham, Chris (1999) Effect of dead time on harmonic distortion in class-D audio power amplifiers. IEE Electronics Letters, 35 (12). pp. 950-952. ISSN 0013-5194

Full content URL: http://dx.doi.org/10.1049/el:19990705

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Item Type:Article
Item Status:Live Archive


A model is described for predicting the harmonic levels introduced by the use of dead time in class-D, PWM-driven audio power output stages. The model demonstrates that the harmonic levels are a function of load impedance, modulation depth, dead time and switching frequency. In addition, measurements show that, for audio applications, dead time is the dominant cause of power stage nonlinearity

Additional Information:(c) 2001 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Keywords:harmonic distortion
Subjects:H Engineering > H600 Electronic and Electrical Engineering
Divisions:College of Science > School of Engineering
ID Code:2912
Deposited On:16 Jul 2010 09:29

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