TY - CHAP
T1 - Design and fabrication of low-loss high-permeability soft magnetic mouldable composites for high-frequency power inductor applications
AU - Baghbaderani, Hasan Ahmadian
AU - Lal, Sumit Sukhbashi
AU - Ye, Liang
AU - Wei, Guannan
AU - Sai, Ranajit
AU - Morris, Michael A.
AU - McCloskey, Paul
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Soft magnetic mouldable composites (SM2Cs) would be ideal for integrating magnetic core inductors into circuits since they can be fabricated at low temperatures and pressures. However, most of the existing SM2Cs offer either low magnetic permeability (μ') or low quality factor (Q), especially at high frequencies (> 10 MHz). To address this issue, a bottom-up approach is reported that incorporates designing the composition of the magnetic filler, coating the filler with Polydimethylsiloxane (PDMS) brush, to a state-of-the-art casting process. This procedure has enabled the fabrication of cores with an outstanding combination of μ' and Q. The μ' of our cores is 40% higher than the best available data at 10 and 25 MHz which is due to the high packing of cores. Our core also offers one of the highest Q at 10 MHz due to low hysteresis loss and low inter-particle eddy current loss as a result of the polymer brush insulating effect.
AB - Soft magnetic mouldable composites (SM2Cs) would be ideal for integrating magnetic core inductors into circuits since they can be fabricated at low temperatures and pressures. However, most of the existing SM2Cs offer either low magnetic permeability (μ') or low quality factor (Q), especially at high frequencies (> 10 MHz). To address this issue, a bottom-up approach is reported that incorporates designing the composition of the magnetic filler, coating the filler with Polydimethylsiloxane (PDMS) brush, to a state-of-the-art casting process. This procedure has enabled the fabrication of cores with an outstanding combination of μ' and Q. The μ' of our cores is 40% higher than the best available data at 10 and 25 MHz which is due to the high packing of cores. Our core also offers one of the highest Q at 10 MHz due to low hysteresis loss and low inter-particle eddy current loss as a result of the polymer brush insulating effect.
KW - heterogeneous integration of power magnetics
KW - low-temperature and pressure-less processing
KW - soft magnetic moldable composite (SM2C)
UR - https://www.scopus.com/pages/publications/85162232299
U2 - 10.1109/APEC43580.2023.10131573
DO - 10.1109/APEC43580.2023.10131573
M3 - Chapter
AN - SCOPUS:85162232299
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 3281
EP - 3287
BT - APEC 2023 - 38th Annual IEEE Applied Power Electronics Conference and Exposition
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 38th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2023
Y2 - 19 March 2023 through 23 March 2023
ER -