Analysis of receiver circuit efficiency for wireless power transfer system according to operating frequency variation

Author

Junil Moon ; Heeam Shin ; Hyunwook Jeong ; Soo-won Kim

Author_Institution

Dept. of Nano-Semicond., Korea Univ., Seoul, South Korea

fYear

2015

fDate

24-26 June 2015

Firstpage

1

Lastpage

2

Abstract

This paper presents a wireless power transfer system for mobile devices. To achieve high efficiency in the receiver circuit, an optimal switching frequency is required. Through experimental analysis, we suggest the optimal efficiency of a receiver circuit. The switching frequency of this receiver circuit can vary from 500 kHz to 13.56 MHz. The received power has a range of 0 to 5 W, and it has a maximum efficiency of 81%. This circuit was fabricated with a 0.18 μm BCD process, and it occupies an area of 2.5 mm × 2.5 mm.

Keywords

inductive power transmission; radio receivers; BCD; frequency 500 kHz to 13.56 MHz; mobile devices; optimal switching frequency; power 0 W to 5 W; receiver circuit efficiency analysis; size 0.18 mum; size 2.5 mm; wireless power transfer system; Clocks; Couplings; RLC circuits; Receivers; Rectifiers; Switching frequency; Wireless communication; A4WP; DC-DC Converter; WPC; Wireless power transfer; buck converter; receiver circuit; resonant coupling; switching frequency;

fLanguage

English

Publisher

ieee

Conference_Titel

Consumer Electronics (ISCE), 2015 IEEE International Symposium on

Conference_Location

Madrid

Type

conf

DOI

10.1109/ISCE.2015.7177813

Filename

7177813