一种高效率线性压电陶瓷驱动电源设计  

Design of a Linear Piezoelectric Ceramic Drive Power Supply with High-efficiency

作　　者：王乐蓉 韩森[1] WANG Lerong;HAN Sen(School of Optical-Electrical and Computer Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China)

机构地区：[1]上海理工大学光电信息与计算机工程学院,上海200093

出　　处：《压电与声光》2020年第3期312-316,共5页Piezoelectrics & Acoustooptics

基　　金：国家重点研发计划基金资助项目(No.2016YFF0101903)。

摘　　要：为改善压电陶瓷驱动电源的静态功耗和动态性能,提出了可变静态工作点和工作电压的高压放大器。首先使用恒流源结构的放大器构成典型的高压放大器,然后通过比例微分电路动态调整放大器的工作电流,最后利用多组抽头电源给高压放大器分段供电,进一步降低系统功耗。实验结果表明,放大器在10 mA静态电流下,可以动态输出400 mA电流;放大器工作电压可以根据输出电压大小在50 V、100 V、150 V、210 V之间自动切换。放大器在很低的静态电流下可以获得很好的动态特性,满足设计要求。In order to improve the static power consumption and dynamic performance of piezoelectric ceramic drive power supply,a high-voltage amplifier with variable static operating point and operating voltage is proposed.First,an amplifier with a constant current source structure is used to construct a typical high-voltage amplifier.Then,the working current of the amplifier is dynamically adjusted by a proportional differential circuit.Finally,the multiple sets of tap power are used to supply power to the high-voltage amplifier in sections to further reduce system power consumption.The experimental results show that the amplifier can dynamically output 400 mA at 10 mA quiescent current;the working voltage of the amplifier can be automatically switched among 50 V,100 V,150 V,and 210 V according to the output voltage.The amplifier can obtain excellent dynamic characteristics at a very low quiescent current,which can meet the design requirements.

关 键 词：压电陶瓷 高压放大器 低功耗 微分电路 动态恒流源 分段供电 

分 类 号：TN384[电子电信—物理电子学] TM282[一般工业技术—材料科学与工程]