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Resonant Converters

D03.10 - LNO Piezoelectric Resonator Temperature Characteristic

Thursday, March 26, 2026
12:00 PM - 1:45 PM CT
Location: Hemisfair Ballroom
One of today’s challenges in the field of power electronics is to increase power-density, which is mainly achieved by increasing the switching frequency. New semiconductor technologies, such as GaN HEMT devices, allow us to increase the switching frequency and achieved greater power-density. Nevertheless, limits are reached with passive materials such as inductors. In this context, piezoelectric resonators (PR) are used to offer an interesting alternative compare to inductor beyond MHz switching frequency. Nevertheless, there is a lack of information on the practical limits in terms of the maximum current that Lithium Niobate (LNO) PRs can withstand in steady state with and without air cooling and on their frequency shift under self-heating induced by current. This paper aims to provide insights on the temperature-dependent shift in the characteristics of LNO resonators and to quantify the current limit of PRs under various practical operating conditions.