With the development of consumer electronics, the requirement for portable consumer eletronics is getting high-er and higher. Ceramic piezoelectric speaker is gradually accepted by portable consumer electronic products for its super light-weight, thickness and high efficiency. Compared to the traditional dynamic speaker, the characteristics of the new ceramic speaker and the requirements for the audio amplifier are analyzed. The common boost structure and audio amplifier are com-pared and analyzed, the data and the effect with boost plus audio amplifier matched up with ceramic speaker are tested. Con-sidering the SPL, efficiency, THD and other factors, using boost structure with Class-D audio amplifier drive new ceramic pi-ezoelectric speaker can obtain the best compromised solution.%随着便携式消费电子的发展,人们对便携式电子设备小型轻薄的要求越来越高,陶瓷压电扬声器以其超轻,超薄,高效,无需大音腔等特点逐渐被众多便携式消费类电子产品所青睐.本文对比传统动圈型扬声器,分析了新型陶瓷压电扬声器的特点及对所需音频功率放大器的要求,对各种常用升压结构及音频功率放大器进行对比、分析,并测试了多种升压结构及音频功率放大器配合陶瓷压电扬声器的相关数据及使用效果,从音压、效率、总谐波失真等各方面考虑,得出使用Boost升压结构,配合D类音频功率放大器驱动新型陶瓷压电扬声器是能够获得最折衷的解决方案.
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