Title :
A compact buck-converter using a thin-film inductor
Author :
Mino, Masato ; Tsukamoto, Kazuo ; Yanagisawa, Keiichi ; Tago, Akio ; Yachi, Toshiaki
Author_Institution :
NTT Interdisciplinary Res. Labs., Musashino, Japan
Abstract :
We have developed a compact buck-converter using a thin-film inductor that is suitable for portable electronic equipment. The inductor consists of planar Cu coils and CoZrTa magnetic layers on a Si substrate; it is fabricated by a dry process. The converter is 3 mm thick and 10×6 mm in area; it operates at 1.6 MHz and has an efficiency of up to 85%
Keywords :
DC-DC power convertors; cobalt alloys; coils; copper; inductors; magnetic multilayers; tantalum alloys; thin film devices; zirconium alloys; 1.6 MHz; 10 mm; 3 mm; 6 mm; 85 percent; CoZrTa; CoZrTa magnetic layers; Cu; Si; Si substrate; buck-converter; dry process fabrication; planar Cu coils; portable electronic equipment; thin-film inductor; Batteries; Coils; Magnetic devices; Magnetic films; Substrates; Switching converters; Thermal management of electronics; Thin film devices; Thin film inductors; Voltage;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1996. APEC '96. Conference Proceedings 1996., Eleventh Annual
Conference_Location :
San Jose, CA
Print_ISBN :
0-7803-3044-7
DOI :
10.1109/APEC.1996.500476
