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Resonant Converters

T32.3 - An Isolated Piezoelectric-Based Power Converter for High Conversion Ratios

Thursday, March 26, 2026
9:00 AM - 9:20 AM CT
Location: 217D
Conventional power converters rely on magnetic components for energy storage, but these magnetics are often the bottleneck to achieving high power density, high efficiency, and light weight. Power converters that use piezoelectric components for energy storage are a promising alternative to magnetic-based converters, particularly for miniature, power-dense designs. One natural application for piezoelectrics is in isolated converters; due to their electromechanical nature, piezoelectric components can be used to create galvanically isolated converters without the use of any magnetic components. Previously demonstrated isolated piezoelectric-resonator-based converters have performed well, but their topologies are best suited for modest conversion ratios. To reach a wider application space, this work presents a new topology of isolated piezoelectric-based converter that operates with high efficiency for large variable conversion ratios < 0.5.