An Accurate and Efficient Approach for High-Frequency Transformer Parameter Extraction

SU Donglin; ZHU Kaixiang; XU Hui; PENG Zhenzhen; YANG Shunchuan; LIU Yan

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An Accurate and Efficient Approach for High-Frequency Transformer Parameter Extraction

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Accurate parasitic parameter extraction of high-frequency transformers is one of the key techniques to efficiently design a Switched-mode power supply(SMPS). An approach to accurately and efficiently extract the parasitic parameters of high-frequency transformers is proposed. The high-frequency transformer is first de-composed into first-order RL and second-order RLC circuits according to inherent step response characteristics. Through the measured discharging pulse and damped oscillation responses of the high-frequency transformer excited by a square wave, we can extract the equivalent circuit parameters through fitting the responses with Particle swarm optimization(PSO). The equivalent circuits of the high-frequency transformer with the desired parameters are obtained for the SMPS design. We validate the effectiveness and accuracy of the proposed method with simulations and measurements.

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《电子学报（英文版）》 |2019年第5期|1059-1065|共7页
作者
SU Donglin; ZHU Kaixiang; XU Hui; PENG Zhenzhen; YANG Shunchuan; LIU Yan;
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作者单位

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;

School of Electronic and Information Engineering, Beihang University, Beijing 100191, China;

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An Accurate and Efficient Approach for High-Frequency Transformer Parameter Extraction

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