Title :
Inductor design for monolithic DC-DC converters
Author :
Musunuri, S. ; Chapman, P.L. ; Zou, J. ; Liu, C.
Author_Institution :
Illinois Univ., Urbana, IL, USA
Abstract :
Optimal design of passives is important for realization of monolithic DC-DC converters. This paper discusses ideas for integrating inductors onto a silicon chip. Expressions for trace resistance and inductance estimation of on-chip spiral inductors is compared. Based on these expressions, planar spiral inductors are designed for use in monolithic DC-DC buck converters. An out-of-plane technology that uses a surface micromachining technique, known as plastic deformation magnetic assembly, is used to erect high quality inductors with small footprints. Experimental results from buck converters with each inductor are presented.
Keywords :
DC-DC power convertors; assembling; inductors; micromachining; monolithic integrated circuits; plastic deformation; power integrated circuits; buck converters; high quality inductors; inductance estimation; inductor; inductors integration; integrated power circuits; monolithic DC-DC buck converters; monolithic DC-DC converters; on-chip spiral inductors; out-of-plane technology; plastic deformation magnetic assembly; silicon chip; surface micromachining technique; trace resistance; Assembly; Buck converters; DC-DC power converters; Inductance; Inductors; Micromachining; Plastics; Silicon; Spirals; Surface resistance;
Conference_Titel :
Power Electronics Specialist Conference, 2003. PESC '03. 2003 IEEE 34th Annual
Print_ISBN :
0-7803-7754-0
DOI :
10.1109/PESC.2003.1218299
