APPARATUS AND METHOD FOR CONTROLLING OF PIEZO CONVERTER

摘要

Provided is a control apparatus of a piezoelectric transformer. A first control unit of the control apparatus can control the operating frequency of the piezoelectric transformer with optimum efficiency for frequency by using measured values of a primary current of the piezoelectric transformer and a primary voltage thereof. A second control unit thereof can control a pulse width modulation of the piezoelectric transformer by using a secondary output voltage of the piezoelectric transformer.