Abstract
Piezoelectric components hold promise for realizing power conversion with unprecedented levels of power handling density at small size scales. Dc-dc converter topologies and operating modes have recently been established for high-efficiency utilization of piezoelectrics, and strategies for piezoelectric material selection and component design have likewise been identified for high-performance power conversion. In this letter, we apply these developments to experimentally demonstrate the extraordinary power density capabilities of piezoelectrics. This 275–150 V, 12 W prototype achieves a piezoelectric resonator power handling density of 1.01 kW/cm <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$^{3}$</tex-math></inline-formula> at 493 kHz, greatly exceeding the densities of previous designs and validating the significant miniaturization potential of piezoelectrics for power conversion.
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