Design and implementation of low-profile contactless battery charger using planar printed circuit board windings as energy transfer device

This paper paper presents the practical details involved in the design and implementation of a contactless battery charger that employs a pair of neighboring printed circuit board (PCB) windings as a contactless energy transfer device. A prototype contactless battery charger developed for application with cellular phones is used as an example to address the design considerations for the PCB windings and energy transfer circuit, plus demonstrates the performance of the contactless charger adapted to a practical application system.

[1]  J.A. Cobos,et al.  Design issues of a core-less transformer for a contact-less application , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[2]  R. Steigerwald,et al.  A comparison of half-bridge resonant converter topologies , 1987, 1987 IEEE Applied Power Electronics conference and Exposition.

[3]  Joung-Hu Park,et al.  Design of a contactless battery charger for cellular phone , 2001, IEEE Trans. Ind. Electron..

[4]  Henry Shu-Hung Chung,et al.  Coreless printed-circuit board transformers for signal and energy transfer , 1998 .

[5]  Andrew D. Brown,et al.  A contactless electrical energy transmission system , 1999, IEEE Trans. Ind. Electron..

[6]  Byungcho Choi,et al.  Contactless energy transfer using planar printed circuit board windings , 2001 .

[7]  Henry Shu-Hung Chung,et al.  Optimal operation of coreless PCB transformer-isolated gate drive circuits with wide switching frequency range , 1999 .

[8]  Byungcho Choi,et al.  A new contactless battery charger for portable telecommunication/computing electronics , 2001, ICCE. International Conference on Consumer Electronics (IEEE Cat. No.01CH37182).

[9]  Marian K. Kazimierczuk,et al.  Class D voltage-switching inverter with tapped resonant inductor , 1993 .

[10]  W. G. Hurley,et al.  Calculation of self and mutual impedances in planar magnetic structures , 1995 .

[11]  H. Chung,et al.  A low-profile power converter using printed-circuit board (PCB) power transformer with ferrite polymer composite , 2001 .

[12]  R. A. Smith.  Electronic Circuits , 1949, Nature.

[13]  Milan M. Jovanovic,et al.  A contactless electrical energy transmission system for portable-telephone battery chargers , 2003, IEEE Trans. Ind. Electron..

[14]  H. Chung,et al.  Optimal operation of coreless PCB transformer-isolated gate drive circuits with wide switching frequency range , 1999, APEC '99. Fourteenth Annual Applied Power Electronics Conference and Exposition. 1999 Conference Proceedings (Cat. No.99CH36285).