Abstract
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.
Original language | English |
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IPC | H01L41/04; H02M3/338; H02M7/537 |
Patent number | WO2013083678 |
Filing date | 06/12/2012 |
Country/Territory | International Bureau of the World Intellectual Property Organization (WIPO) |
Publication status | Published - 2013 |