Digital Signal Processing


Average Modeling of Fly-Buck Converter

Authors: Denys I. Zaikin, Simon L. Mikkelsen, Stig Jonasen, Konstantin Sirenko

This document presents an average macro model for the fly-buck converter. The model can be used for both large and small signal modeling. Parasitic and lossy components are included in the model, and it is partially based on a conventional average switch model for a buck stage. For isolated output, the analytic solution of the average current in a secondary winding is proposed. The presented model is implemented in SPICE, and simulation results are compared to switching model simulation and experimental data.

Comments: 4 Pages. Preliminary version. To be improved in the nearest future.

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Submission history

[v1] 2019-02-28 09:20:02

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