Integrated design procedure for printed circuit board inductors in DC-to- DC converters

A design procedure for a DC-to-DC converter is presented taking the properties of the required inductor type into account. It is applied to a miniaturized 1.4 MHz boost converter with a power range below 1 W using ultra thin printed circuit board integrated inductors. As a result, it is more efficient to operate in the continuous mode, if the used inductor type has an increased AC resistance. The losses could be reduced by 30% compared to a reference design.

[1]  Tore Undeland,et al.  Power Electronics: Converters, Applications and Design , 1989 .

[2]  E. Waffenschmidt,et al.  Integrated Ultra Thin Flexible Inductors for Low Power Converters , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[3]  Yuqin Sun,et al.  Microfabricated V-Groove Power Inductors for High-Current Low-Voltage Fast-Transient DC-DC Converters , 2005, 2005 IEEE 36th Power Electronics Specialists Conference.

[4]  S.C.O. Mathuna,et al.  MCM-L integrated transformers for low power applications , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[5]  Eberhard Waffenschmidt.  Performance limits of ultra-thin printed circuit board inductors , 2006 .

[7]  C.O. Mathuna,et al.  PCB integrated inductors for low power DC/DC converter , 2002, APEC. Seventeenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.02CH37335).

[8]  J.A. Ferreira,et al.  Design method and material technologies for passives in printed circuit Board Embedded circuits , 2005, IEEE Transactions on Power Electronics.

[9]  Y. Katayama,et al.  High-power-density MHz-switching monolithic DC-DC converter with thin-film inductor , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).