Investigation of fully integrated power stage for piezoelectric DC-DC converters

Baptiste Gonon-Mathieu (1, 2) , Lucas de Araujo Pereira (1) , Adrien Morel (3) , Théo Lamorelle (1) , G. Despesse (1) , Gaël Pillonnet (1)

1 CEA-LETI - Commissariat à l'énergie atomique et aux énergies alternatives - Laboratoire d'Electronique et de Technologie de l'Information
2 X - École polytechnique
3 SYMME - Laboratoire SYstèmes et Matériaux pour la MEcatronique

This work explores the potential of piezoelectric DC-DC converters as a viable alternative to inductive-based converters. Their exceptional frequency-scale property and planar shape make them highly promising. However, for seamless integration, it is crucial to incorporate the power stage into a single chip. By utilizing the most favorable piezoelectric material, namely LNO in thickness vibration mode, this study examines the achievable performance metrics such as efficiency, power density, and silicon surface area using a fully integrated power stage within a classical BCD technology.

Mots clés: Power conversion; DC-DC; Piezoelectricity; Power converter; Integration

Domaines: Energie électrique; Micro et nanotechnologies/Microélectronique; Electronique

Baptiste Gonon-Mathieu, Lucas de Araujo Pereira, Adrien Morel, Théo Lamorelle, G. Despesse, et al.. Investigation of fully integrated power stage for piezoelectric DC-DC converters. PwrSoC 2023 - The Eighth International Workshop on Power Supply on Chip, Sep 2023, Hannovre, Germany. . ⟨hal-04421039⟩