基于恒流源的改进型压电陶瓷高压驱动电源

恒流源压电陶瓷驱动电源具有结构简单及频响好等优点,但静态功耗高是其突出缺点。该文提出了一种改进的恒流源压电陶瓷驱动电源,在静态功耗一定的情况下,提高了其动态输出能力及竞争能力。该改进型压电陶瓷驱动电源的样机具有2.4~300V的输出电压范围,在静态恒定电流为0.1A时,动态输出电流最大可达0.44A。基于恒流源的高压驱动电源,驱动电压主要由驱动管的耐压决定,原理上可得到远高于现有高压运放的水平,在高压压电陶瓷驱动方面有广阔的前景。

An Improved Piezoelectric Ceramic High Voltage Driving Power Based on Constant Current Source

The piezoelectric ceramic driving power based on constant current source has the advantages of simple structure and good frequency response, but the outstanding shortcoming is that the static power consumption is usually very high. An improved piezoelectric ceramic power based on constant current source is presented in this paper. The dynamic output capability is greatly improved with certain static power consumption, enhancing the competitive ability significantly. A prototype device with an output voltage range of 2.4~300 V is designed. The maximum dynamic output current is 0.44 A when the static constant current is 0.1 A. The driving voltage of a high voltage driving power based on constant current source is mainly determined by the pressure of the drive tube. In principle, it can be much higher than the existing high voltage operational amplifier level. Hence, the improved piezoelectric ceramic power has broad prospects in the area of driving high voltage piezoelectric ceramic.