Title :
Inductively coupled wireless power transfer with class-DE power amplifier
Author :
Nagashima, Tomoharu ; Xiuqin Wei ; Suetsugu, Tadashi ; Sekiya, Hiroo
Author_Institution :
Grad. Sch. of Adv. Integration Sci., Chiba Univ., Chiba, Japan
Abstract :
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.
Keywords :
SPICE; inductive power transmission; integrated circuit design; power amplifiers; power conversion; power inductors; Spice; WPT system; class-DE power amplifier; class-E zero-voltage switching; design method; efficiency 32.5 percent; inductive coupled wireless power transfer system; power 250 mW; power-conversion efficiency; power-delivery efficiency; primary inductor; zero-derivative-voltage switching; Coils; Couplings; Power generation; SPICE; Switches; Wireless communication; Zero voltage switching; Class-DE power amplifier; class-E ZVS/ZDS conditions; inductive coupling; power-delivery efficiency; wireless power transfer;
Conference_Titel :
Circuits and Systems (APCCAS), 2012 IEEE Asia Pacific Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1728-4
DOI :
10.1109/APCCAS.2012.6418974
