Title :
A new planar microtransformer for use in macro-switching-converters
Author :
Yachi, T. ; Mino, M. ; Tago, A. ; Yanagisawa, K.
Author_Institution :
NTT Appl. Electron. Lab., Tokyo, Japan
Abstract :
A novel planar microtransformer for use in micro-switching converters of portable equipment is described. This microtransformer, consisting of planar coils and CoZrRe amorphous magnetic layers on a Si substrate, is fabricated by a dry process. It is approximately 0.3 mm thick and 4×4 mm2. The coils have relatively high inductance of 50 nH/mm2. This microtransformer is used in a primary-controlled forward converter, which operates well at 32 MHz
Keywords :
switching; transformers; 0.3 mm; 32 MHz; CoZrRe amorphous magnetic layers; Si; macro-switching-converters; planar microtransformer; Amorphous magnetic materials; Amorphous materials; Coils; Insulation; Ion beams; Magnetic films; Sputter etching; Sputtering; Switching converters; Wounds;
Conference_Titel :
Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE
Conference_Location :
Cambridge, MA
Print_ISBN :
0-7803-0090-4
DOI :
10.1109/PESC.1991.162646
