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arXiv · 2002.03489

Flyback-Based Multiple Output dc-dc Converter with Independent Voltage Regulation

M. Tahan·D. Bamgboje·T. Hu
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Abstract

This paper proposes a new single input multiple output power supply by integrating a flyback converter and several buck converters. The flyback converter works as the main regulator, and the buck converters provide series voltage compensation with the aim of tight regulation. A time multiplexing switching scheme is proposed to deliver multiple output voltage levels via a two winding transformer and to eliminate the cross regulation between output channels. This configuration reduces the size of flyback transformer and filter capacitors, and consequently improves the overall form factor. A detailed steady state analysis is conducted on the circuit to obtain the design criteria. A three output channel power supply is designed and the effectiveness of the proposed configuration is validated via simulation with a MATLAB/Simscape model. Simulation results also demonstrate satisfactory transient response to load changes.

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M. Tahan, D. Bamgboje, T. Hu. 2020-02-10. Flyback-Based Multiple Output dc-dc Converter with Independent Voltage Regulation. https://doi.org/10.1109/pedg.2018.8447884

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