Efficient Waveform Preservation of Discrete Spectrum Signals With Multilayered Piezoelectric Transformer

Contour-Mode Ring-Shaped AlN Microresonator on Si and Feasibility of Its Application in Series-Resonant Converter

“…This commercially available resonator cannot be integrated on Si. As mentioned earlier, the piezoelectric transformer (PT) based converter has been reported in the literature [21]- [23], [49], [72] as lamp ballast or LED driver. The efficiency of these converters has been compared to the estimated efficiency of the presented micro-resonator based converter as depicted in Table VI.…”

“…It is not feasible to utilize them in power converters, as it may lead to converters with unreasonable efficiency profile. Interestingly, piezoelectric devices such as piezoelectric transformers (PT) have been used in power conversion applications, such as lamp ballasts [19], [21] and LED drivers [22], [23] for more than a decade [24]. They offer many advantages in terms of size and mass compared to their magnetic counterparts (inductors and transformers).…”

Size-dependent effects on electromechanical response of multilayer piezoelectric nano-cylinder under electro-elastic waves

“…Using a model of arbitrary multilayers on a substrate, Krantz and Gerken calculated the resonant bending-mode magnetoelectric (ME) coefficients of magnetostrictive-piezoelectric multilayer cantilevers, and it was found that ME coefficients strongly increase with cantilever thickness primarily due to increasing resonance frequencies [7]. An improved 1-D stress model for a single layer transformer in vacuum was used to model the multilayered transformer mounted on a printed circuit board, and a square pulse signal was amplified [8].…”