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The target of a power converter controller using a piezoelectric transformer (PT) designed as a resonant circuit, as in half-bridge or class-E topology is to maintain constant output voltage or current and to achieve the ZVS (zero-voltage-switching) condition over the operation range. In the presented class-E application, the design of the closed-loop feedback is achieved for 0-3 Watts at 6 V/DC output...
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