CIRCUIT AND METHOD FOR DRIVING CAPACITIVE LOAD

摘要

PROBLEM TO BE SOLVED: To provide a driving circuit which is capable of driving with low power consumption even when capacitive load is at a low voltage. SOLUTION: A capacitive load 7 with its end grounded and an inductive element are connected in series through an analog circuit and connected with another capacitor 2 one end of which is grounded to form an LC serial resonance circuit. A PMOS switching element 5 is connected between the ungrounded terminal of the capacitive load 7 and a positive driving voltage source Vdd and an NMOS switching element 6 is connected between the ungrounded terminal of the above capacitive load 7 and the ground terminal to form the drive circuit.