Abstract
The work presented in this article concerns the design of micro-transformer in monolithic technology for high frequencies comprised of planar-type coil and a magnetic circuit made of several layers of materials. This micro-transformer will be integrated into a micro-converter of type flyback. The Mohan method for determining the geometric parameters and the use of S-parameters for the calculation of technological parameters was chosen. The electrical model in π perfectly summarizes the various parasitic effects generated by stacking layers of different materials constituting the micro-transformer. The study of electromagnetic effects allowed us to show the role of ferrite, which is used to confine the magnetic field lines and minimize disruption of the neighbor ship. To validate dimensioning of the geometrical and technological parameters, we have simulated with the help of the software PSIM 6.0, the equivalent electrical circuit of the converter containing the electrical circuit of the dimensioned planar micro-transformer.
Published Version
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