数字音源、节能和平板薄型视频系统的推波助澜,数字技术的渗透,开关放大技术的理论和器件制造技术的日趋成熟,D类放大器的发展方兴未艾,大有和传统模拟放大器平分天下的势头,不但在小功率便携设备的音频放大领域逐渐取代了传统的模拟放大器,在数百瓦的大功率音频放大器领域同样开始崭露头角。一、D类放大器的基本电路构成大功率D类放大器的拓扑目前主要有三种:1、全集成电路方案:包括功率输出级在内,全部采用集成电路,对于中小功率 Digital audio, energy-saving and flat panel thin-film video system fueled by digital technology penetration, the theory of switching amplification technology and device manufacturing technology is maturing, the development of Class D amplifier in the ascendant, much in line with the traditional analog amplifier divide the world trend, not only in Low-power portable devices gradually replace the traditional audio amplifier field of analog amplifiers, high-power audio amplifiers in the hundreds of watts also began to emerge. First, the basic circuit structure of Class D amplifier High-power class D amplifier topology currently there are three main types: 1, all integrated circuit solutions: including the power output stage, including all the integrated circuits, for small and medium power