首页|An Accurate and Efficient Approach for High-Frequency Transformer Parameter Extraction
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 decomposed 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.
High-frequency transformerSwitchedmode power supply (SMPS)Electromagnetic compatibilityDamped oscillationParticle swarm optimization (PSO)
SU Donglin、ZHU Kaixiang、XU Hui、PENG Zhenzhen、YANG Shunchuan、LIU Yan
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School of Electronic and Information Engineering, Beihang University, Beijing 100191, China
This work is supported by the National Natural Science Foundation of China
NETL
NSTL
万方数据
维普
