TY - GEN
T1 - Investigations on on-chip planar inductor design with post-processed magnetic core for DC-DC converter applications
AU - Kang, Taewook
AU - Kim, Jaeha
PY - 2013
Y1 - 2013
N2 - The paper investigated the efficacy of on-chip planar spiral inductors with post-processed magnetic cores for the purpose of on-chip, point-of-load DC-DC regulation. The best core structure feasible with simple IC post-processing steps such as etching/drilling and deposition is an E-shape, composed of vertical cores located in the center and sides of the spiral and a horizontal core on the top. The best inductor geometry per given IC area that can maximize the efficiency of the DC-DC converter in given operating conditions is found via EM simulation and verified with measurements using on-board planar inductors and on-chip inductors implemented in a 0.18-μm CMOS. The analysis and measurement found that with the proposed core structure, the inductance can be increased by 2.5× with the core permeability of 10 and 3.5× with 100. Albeit a moderate improvement, it can considerably improve the efficiency of on-chip, point-of-load DC-DC converters.
AB - The paper investigated the efficacy of on-chip planar spiral inductors with post-processed magnetic cores for the purpose of on-chip, point-of-load DC-DC regulation. The best core structure feasible with simple IC post-processing steps such as etching/drilling and deposition is an E-shape, composed of vertical cores located in the center and sides of the spiral and a horizontal core on the top. The best inductor geometry per given IC area that can maximize the efficiency of the DC-DC converter in given operating conditions is found via EM simulation and verified with measurements using on-board planar inductors and on-chip inductors implemented in a 0.18-μm CMOS. The analysis and measurement found that with the proposed core structure, the inductance can be increased by 2.5× with the core permeability of 10 and 3.5× with 100. Albeit a moderate improvement, it can considerably improve the efficiency of on-chip, point-of-load DC-DC converters.
KW - DC-DC Converter
KW - On-chip Spiral Inductor
KW - Open-loop Magnetic Core
UR - https://www.scopus.com/pages/publications/84883670727
U2 - 10.1109/ECCE-Asia.2013.6579242
DO - 10.1109/ECCE-Asia.2013.6579242
M3 - Conference contribution
AN - SCOPUS:84883670727
SN - 9781479904822
T3 - 2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
SP - 1079
EP - 1083
BT - 2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
T2 - 2013 IEEE ECCE Asia Downunder - 5th IEEE Annual International Energy Conversion Congress and Exhibition, IEEE ECCE Asia 2013
Y2 - 3 June 2013 through 6 June 2013
ER -