Title :
A new application for zero-current-switched full-wave resonant converters
Author :
Andersen, Michael A. E.
Author_Institution :
Tech. Univ. of Denmark, Lyngby
Abstract :
An entirely new application for high-frequency resonant power converters is presented. It is for use in digital audio power amplifiers and could be called a 1-bit power D/A converter. It involves the amplification of the 1-bit moderately oversampled and highly noise shaped digital input signal to a level equal to that of an audio power amplifier. The amplification makes use of high frequency zero-current-switched full-wave buck and boost resonant converters followed by an analogue low pass filter before the loudspeaker
Keywords :
audio-frequency amplifiers; digital-analogue conversion; low-pass filters; power amplifiers; power convertors; switching circuits; HF; ZCS; amplification; analogue low pass filter; application; boost; buck; digital audio power amplifiers; digital input signal; high-frequency resonant power converters; loudspeaker; power D/A converter; switching circuits;
Conference_Titel :
Power Electronics and Applications, 1993., Fifth European Conference on
Conference_Location :
Brighton
