Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)

The Korean Institute of Electrical Engineers (대한전기학회)
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Class D Amplifier Using Multi-Level switching and ZVS

Multi-Level Switching과 ZVS를 이용한 Class D Amplifier

  • Kim Duil (Dept. of Electronic & Electrical & Control & Instrumentation Engineering Hanyang Univ.) ;
  • Kim Hee-Jun (School of Electrical Engineering & Computer Science Hanyang Univ.) ;
  • Cho Kyu-Min (Dept. of Information and Communication Engineering Yuhan College)
  • Published : 2004.07.14
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Abstract

This paper presents design of a class D Amplifier using multi-level switching and Zero-Voltage-Switching(ZVS) technique. The amplifier circuit features zero voltage switching at all switches of the circuit and multi-level switching operation so that the higher efficiency and lower THD could be achieved. A 50-W prototype D class amplifier built and tested it. As a result, the maximum efficiency of $96\%$ and the THD of under $60\%$ were obtained.

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