The present invention relates to a piezoelectric power converter comprising an input driver electrically coupled directly to an input or primary electrode of the piezoelectric transformer without any intervening series or parallel inductor. A feedback loop is operatively coupled between an output voltage of the piezoelectric transformer and the input driver to provide a self-oscillation loop around a primary section of the piezoelectric transformer oscillating at an excitation frequency. Electrical characteristics of the feedback loop are configured to set the excitation frequency of the self- oscillation loop within a zero-voltage-switching (ZVS) operation range of the piezoelectric transformer.
|IPC||H01L41/04; H02M3/338; H02M7/537|
|Country||International Bureau of the World Intellectual Property Organization (WIPO)|
|Publication status||Published - 2013|