TY - GEN
T1 - Microfabricated inductors for 20 MHz dc-dc converters
AU - O'Donnell, T.
AU - Wang, N.
AU - Meere, R.
AU - Rhen, F.
AU - Roy, S.
AU - O'Sullivan, D.
AU - O'Mathuna, C.
PY - 2008
Y1 - 2008
N2 - This paper presents the design and measured results for micro-fabricated inductors suitable for use in high frequency (> 10 MHz), low power (1 -2 W) dc-dc converters. The design has focused on maximizing inductor efficiency for a given converter specification. Inductors in the range of 100 nH to 300 nH have been fabricated and tested. The small signal measurements show a relatively flat inductance profile, with a 10% drop in inductance at 30 MHz. Inductance vs. dc bias current measurements show less than 15% decrease in inductance at 500 mA current. The performance of the micro-inductors have also been compared to a conventional wire-wound inductor in a 20 MHz dc-dc converter. The converter efficiency is shown to be approximately 4% lower when the micro-inductor is used compared to the when the wire-wound inductor is used. The peak efficiency of the micro-inductor in the converter is estimated to be approximately 93%.
AB - This paper presents the design and measured results for micro-fabricated inductors suitable for use in high frequency (> 10 MHz), low power (1 -2 W) dc-dc converters. The design has focused on maximizing inductor efficiency for a given converter specification. Inductors in the range of 100 nH to 300 nH have been fabricated and tested. The small signal measurements show a relatively flat inductance profile, with a 10% drop in inductance at 30 MHz. Inductance vs. dc bias current measurements show less than 15% decrease in inductance at 500 mA current. The performance of the micro-inductors have also been compared to a conventional wire-wound inductor in a 20 MHz dc-dc converter. The converter efficiency is shown to be approximately 4% lower when the micro-inductor is used compared to the when the wire-wound inductor is used. The peak efficiency of the micro-inductor in the converter is estimated to be approximately 93%.
UR - http://www.scopus.com/inward/record.url?scp=49249134957&partnerID=8YFLogxK
U2 - 10.1109/APEC.2008.4522796
DO - 10.1109/APEC.2008.4522796
M3 - Conference contribution
AN - SCOPUS:49249134957
SN - 9781424418749
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 689
EP - 693
BT - 2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC
T2 - 2008 23rd Annual IEEE Applied Power Electronics Conference and Exposition, APEC
Y2 - 24 February 2008 through 28 February 2008
ER -