PIEZO DRIVING CIRCUIT, AND PIEZO DRIVING METHOD

摘要

Embodiments of the present invention relate to a piezoelectric driving circuit and a driving method thereof. The piezoelectric driving circuit drives a piezoelectric circuit by using a first driving switch connected to one end of a piezoelectric circuit, a second driving switch corresponding to the first driving switch and connected to the other end of the piezoelectric circuit, and a sensing resistor for sensing a current flowing in the piezoelectric circuit. A fire angle and a duty cycle of an upper switch are adjusted such that a peak of a sense voltage generated in the sensing resistor at a timing at which the first driving switch is turned on, in a state in which the second driving switch is turned on. [Reference numerals] (30) Switch control unit