Analysis and Optimization of Bidirectional Exponential SC Power Conversion Circuits

Yuanmao Ye†; Wei Peng*; Bijia Jiang*; Xianyong Zhang**

Analysis and Optimization of Bidirectional Exponential SC Power Conversion Circuits

Vol. 18, No. 3, pp. 672-680, May 2018

10.6113/JPE.2018.18.3.672

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Abstract

A bidirectional exponential-gain switched-capacitor (SC) DC-DC converter is developed in this paper. When compared with existing exponential SC converters, the number of switches is significantly reduced and its structure is simplified. The voltage transfer features, voltage ripple across capacitors, efficiency and output impedance of the proposed converter are analyzed in detail. Optimization of the output impedance is also discussed and the best type of capacitance distribution is determined. A common function of the voltage gain to the output impedance is found among the proposed converter and other popular SC voltage multipliers. Experimental evaluation is carried out with a 6-24V bidirectional prototype converter.

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Cite this article

[IEEE Style]

Y. Ye†, W. Peng*, B. Jiang*, X. Zhang**, "Analysis and Optimization of Bidirectional Exponential SC Power Conversion Circuits," Journal of Power Electronics, vol. 18, no. 3, pp. 672-680, 2018. DOI: 10.6113/JPE.2018.18.3.672.

[ACM Style]

Yuanmao Ye†, Wei Peng*, Bijia Jiang*, and Xianyong Zhang**. 2018. Analysis and Optimization of Bidirectional Exponential SC Power Conversion Circuits. Journal of Power Electronics, 18, 3, (2018), 672-680. DOI: 10.6113/JPE.2018.18.3.672.