Eric Stolt
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View article: Lithium Tantalate Bulk Acoustic Resonator for Piezoelectric Power Conversion
Lithium Tantalate Bulk Acoustic Resonator for Piezoelectric Power Conversion Open
We present the first lithium tantalate (LT) thickness-extensional (TE) mode bulk acoustic resonators designed for piezoelectric power conversion, showcasing a low temperature coefficient of frequency (TCF) of -13.56 ppm/K. These resonators…
View article: Lithium Niobate Resonators for Power Conversion: Spurious Mode Suppression Via an Active Ring
Lithium Niobate Resonators for Power Conversion: Spurious Mode Suppression Via an Active Ring Open
In an effort to shift the paradigm of power conversion, acoustic resonators pose as compact alternatives for lossy magnetic inductors. Currently, the acoustic resonator's restricted inductive region between its series and parallel resonanc…
View article: A Stacked Piezoelectric Converter Using a Segmented IDT Lithium Niobate Resonator
A Stacked Piezoelectric Converter Using a Segmented IDT Lithium Niobate Resonator Open
Piezoelectric resonators promise to increase dc-dc converter power density by replacing inductive components. However, piezoelectric resonators are not direct circuit level replacements for inductors, requiring new topologies. In this pape…
View article: Spurious-Free Lithium Niobate Bulk Acoustic Resonator for Piezoelectric Power Conversion
Spurious-Free Lithium Niobate Bulk Acoustic Resonator for Piezoelectric Power Conversion Open
Recently, piezoelectric power conversion has shown great benefits from replacing the bulky and lossy magnetic inductor in a traditional power converter with a piezoelectric resonator due to its compact size and low loss. However, the conve…
View article: Optimized Resonators for Piezoelectric Power Conversion
Optimized Resonators for Piezoelectric Power Conversion Open
The performance of inductors at high frequencies and small sizes is one of the largest limiting factors in the continued miniaturization of dc-dc converters. Piezoelectric resonators can have a very high quality factor and provide an induc…
View article: Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance
Fixed-Frequency Control of Piezoelectric Resonator DC-DC Converters for Spurious Mode Avoidance Open
Piezoelectric resonators have shown promise as efficient, power-dense energy storage element alternatives to continue the miniaturization of DC-DC converters. However, practical piezoelectric resonators diverge from their ideal behavior du…