Design and Modeling of a Square Planar Inductor for a Push Pull Converter

Abstract

The scope of this work is the modeling and the simulation of a square planar spiral inductor; in order to integrate it into a selected electronic power converter. At first, from the operating conditions of an isolated DC-DC converter, we estimate the required values for the dimensioning of the inductance of the output of this device, which means; the determination of its various physical and geometrical parameters. Modeling requires the identification and consideration of various parasitic elements and their effects on the equivalent physical model of the inductor. The parametric study we conducted by MATLAB focused primarily on calculating the quality factor of the inductor then the influence of geometrical parameters on both the electrical, physical and frequency behavior of the square planar spiral inductor and the quality factor of the inductor. Finally, a comparative study by the PSIM software between a conventional inductor used in a DC-DC converter: push-pull, and an integrated inductor in the same selected structure gave desired results.

Keywords

• Integration
• passive components
• planar inductor
• quality factor