Title :
Electrical performance of microtransformers for DC-DC converter applications
Author :
Brunet, Magali ; Donnell, Terence O. ; Baud, Laurent ; Wang, Ningning ; Brien, Joe O. ; McCloskey, Paul ; Mathuna, Sean C O
Author_Institution :
PEI Technol., Nat. Microelectron. Res. Center, Cork, Ireland
fDate :
9/1/2002 12:00:00 AM
Abstract :
This paper presents the electrical performances of the fabricated microtransformers. Measurements for open-circuit and short-circuit impedance up to a frequency of 100 MHz are presented. The measured results are compared with predictions obtained from models based on an analytical approach. The use of a microtransformer in a 2-MHz dc-dc converter is reported. An efficiency of 40% for a power density of 1.2 W/cm2 was measured.
Keywords :
DC-DC power convertors; power transformers; 100 MHz; 2 MHz; 40 percent; DC-DC converter; analytical model; electrical characteristics; microtransformer; open-circuit impedance; power density; short-circuit impedance; Conducting materials; DC-DC power converters; Fabrication; Frequency; Magnetic cores; Magnetic films; Silicon; Substrates; Thin film inductors; Transformers;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2002.802405
