Tipo di tesi
Tesi di laurea magistrale
Titolo
GaN versus Silicon-based Class-D Audio Amplifiers: A Comparative Study of Performance and Efficiency
Dipartimento
INGEGNERIA DELL'INFORMAZIONE
Corso di studi
INGEGNERIA ELETTRONICA
Riassunto (Italiano)
This work compares GaN and Silicon transistors for audio applications. A 200 W Bridge-Tied Load Class-D amplifier which operates from a 40 V single supply has been designed from scratch and built. Such custom amplifier can use either Silicon MOSFETs or GaN Power Transistors. Experimental measures and tests were conducted to fully characterize the amplifier when using alternatively Silicon and GaN transistors. Eventually, laboratory measurements prove GaN devices superior, thanks to their lower parasitic capacitances and switching charges, achieving higher efficiency and lower distortion.
