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This paper describes auxiliary power supply for supplying high-side MOSFET driver using piezoelectric transformer. The proposed circuit consists of the piezoelectric transformer and driving circuit. The circuit allows 100% duty cycle of the high side MOSFET driver. Used piezoelectric transformer works in radial vibration mode. To verify the power supply function the full bridge convertor was used...
In applications of high voltage and low power capacitor charging, conventional magnetic based power converters often suffer from bulky components and poor efficiency. Piezoelectric transformer (PT) based converters however, are compact and efficient, especially at high step-up applications. In this paper an interleaved interdigitated electrode (IDE) multilayer PT utilizing longitude and thickness...
Research and development within piezoelectric transformer (PT) based converters are rapidly increasing, as the technology is maturing and starts to prove its capabilities. High power density and high efficiencies are reported and recently several inductor-less converters have emerged [1][2][7][10][13], which demonstrates soft switching capabilities. The elimination of a bulky inductor, reduces size...
Research and development within piezoelectric transformer (PT) based converters are rapidly increasing as the technology is maturing and starts to prove its capabilities. Especially for high voltage and high step-up applications, PT based converters have demonstrated good performance and DC/AC converters are widely used commercially. The availability of PT based converters for DC/DC applications are...
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