Title :
A microfabricated transformer for high-frequency power or signal conversion
Author :
Xu, Ming ; Liakopoulos, Trifon M. ; Ahn, Chong H. ; Han, Suk Hee ; Kim, Hi Jung
Author_Institution :
Dept. of Electr. & Comput. Eng., Cincinnati Univ., OH, USA
fDate :
7/1/1998 12:00:00 AM
Abstract :
A new microtransformer (1:1) for high frequency power or signal conversion has been designed, fabricated and characterized in this work. An innovative laterally laminated-core structure has been adopted and implemented by using new micromachining techniques. Using the fabricated microtransformer, a voltage gain of -4 dB has been achieved over the frequency range of 7-11 MHz. The coupling coefficient between the primary and secondary coils is higher than 0.9 up to 5 MHz. The transformer realized in this research functionally works as a basic transformer for power or signal conversion
Keywords :
DC-DC power convertors; high-frequency transformers; laminates; micromachining; photolithography; signal processing equipment; transformer cores; -4 dB; 5 to 11 MHz; DC/DC power converters; NiFe; coupling coefficient; high-frequency power; laterally laminated-core structure; microfabricated transformer; micromachining techniques; photolithography; primary coils; secondary coils; signal conversion; voltage gain; Coils; Conductors; Eddy currents; Fabrication; Frequency; Inductance; Magnetic cores; Micromachining; Power transformer insulation; Strips;
Journal_Title :
Magnetics, IEEE Transactions on
