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An investigation into the separate and combined effect of pulse timing errors on harmonic distortion in a class D audio amplifier

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3 Author(s)
Koeslag, F. ; Dept. Electr. & Electron. Eng., Univ. of Stellenbosch, Stellenbosch ; Mouton, H.du T. ; Beukes, H.J.

This paper contains a detailed investigation of three sources contributing to pulse timing errors during switching within a half-bridge or full-bridge configuration, i.e. MOSFET turn-on and turn-off delays, dead time, as well as non-linear rise and fall switching transitions. The analysis is based on a novel simulation strategy that makes use of Newton's numerical method. The separate effect of each pulse timing error on harmonic distortion is established. A combination model is then introduced describing the interaction between the latter three timing errors.

Published in:

Power Electronics Specialists Conference, 2008. PESC 2008. IEEE

Date of Conference:

15-19 June 2008