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Class D audio amplifier with 4th order output filter and self-oscillating full-state hysteresis based feedback driving capacitive transducers
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| Author(s) |
Dennis NIELSEN, Arnold KNOTT, Michael ANDERSEN |
| Abstract |
A practical solution is presented for the design of a non-isolated high voltage DC/AC power converter.The converter is intended to be used as a class D audio amplifier for a Dielectric Electro Active Polymer(DEAP) transducer. A simple and effective hysteretic control scheme for the converter (buck with fourthorderoutput filter) is developed and analyzed. The proposed design is verified experimentally by a 125VAR prototype amplifier, capable of delivering a peak output voltage of 240 V within the frequencyrange of 100 Hz 3.5 kHz. A peak efficiency of 87 \% is reported. |
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| Filename: | 0364-epe2014-full-21102476.pdf |
| Filesize: | 519.2 KB |
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| Type |
Members Only |
| Date |
Last modified 2015-06-08 by System |
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