Proceedings of the KIEE Conference (대한전기학회:학술대회논문집)
- 1998.07f
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- Pages.2145-2147
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- 1998
ZVT-PWM Amplifier for Audio Applications
소프트 스위칭 기술을 이용한 오디오용 파워앰프
Abstract
This paper presents a Class-D type switched mode audio power amplifier employing ZVT(Zero-Voltage-Transition) soft switching technique. In order to obtain a wide bandwidth and lower distortion for an audio amplifier a high switching frequency is essential. The ZVT switching scheme enables a high frequency switching without sacrificing the efficiency much as in a hard switching. A prototype amplifier is built to demonstrate the feasibility of this technique for the audio power amplifier.
Keywords