Inductively coupled wireless power transfer with class-DE power amplifier


This paper presents a design method of the inductive coupled wireless power transfer (WPT) system with class-DE power amplifier. The class-DE amplifier can achieve high power-conversion efficiency at high frequencies because it satisfies the class-E zero-voltage switching and zero-derivative-voltage switching conditions. By using the class-DE amplifier as a driver to generate a voltage across the primary inductor, high power-delivery efficiency can be achieved in the designed WPT system. A step-by-step design example using Spice is presented. The simulation results show the overall efficiency of 32.5 % at 250 mW.

DOI: 10.1109/APCCAS.2012.6418974

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@inproceedings{Nagashima2012InductivelyCW, title={Inductively coupled wireless power transfer with class-DE power amplifier}, author={Tomoharu Nagashima and Xiuqin Wei and Tadashi Suetsugu and Hiroo Sekiya}, booktitle={APCCAS}, year={2012} }