Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications

Tao Meng; Hongqi Ben; Guo Wei

Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications

Tao Meng

Hongqi Ben

Guo Wei

Vol. 12, No. 3, pp. 439-447, May 2012

10.6113/JPE.2012.12.3.439

Common duty ratio

Input series

Input voltage sharing (IVS)

Magnetic integration

Multiple-output auxiliary power supply

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Abstract

In this paper, an input-series auxiliary power supply scheme is proposed, which is suitable for high input voltage and multiple-output applications. The power supply scheme is based on a two-transistor forward topology, all of the series modules have a common duty ratio, all the switches are turned on and off simultaneously, and the whole circuit has a single power transformer. It does not require an additional controller but still achieves efficient input voltage sharing (IVS) for each series module through its inherent transformer-integration strategy. The IVS process of this power supply scheme is analyzed in detail and the design considerations for the related parameters are given. Finally, a 100W multiple-output auxiliary power supply prototype is built, and the experimental results verify the feasibility of the proposed scheme and the validity of the theoretical analysis.

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Cite this article

[IEEE Style]

T. Meng, H. Ben, G. Wei, "Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications," Journal of Power Electronics, vol. 12, no. 3, pp. 439-447, 2012. DOI: 10.6113/JPE.2012.12.3.439.

[ACM Style]

Tao Meng, Hongqi Ben, and Guo Wei. 2012. Input-Series Multiple-Output Auxiliary Power Supply Scheme Based on Transformer-Integration for High-Input-Voltage Applications. Journal of Power Electronics, 12, 3, (2012), 439-447. DOI: 10.6113/JPE.2012.12.3.439.