交错并联临界导通模式Buck电感高密度集成与优化

doi:10.19595/j.cnki.1000-6753.tces.211923

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Abstract This paper studies the high-density integration and optimization design method of planar inductor for two-phase interleaved critical conduction mode (CRM) Buck converter with wide-input-voltage-range and critical conduction mode. With the goal of reducing the total volume and loss of the inductor, a new integrated inductor core structure sharing non-winding magnetic parts is proposed based on the inductor current and its magnetic flux distribution characteristics. The influence of integrated magnetic core on coupling effects and circuit operating characteristics is analyzed. Taking the footprint and loss of the inductor under limited height as the optimization objective, an optimized design method of the new structure for inductor is given. Finally, an experimental prototype with the height of only 7mm, the power density of about 800W/in³ and the maximum efficiency of 99% is developed. The experimental results show the effectiveness of the proposed scheme.

Key words： Buck converter planar coupled inductor magnetic integration wide-input-voltage

Received: 25 November 2021

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TM46

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	Articles by authors
	Ni Shuo
	Wu Hongfei
	Chen Junyu
	Hua Ming
	Xing Yan

Cite this article:

Ni Shuo,Wu Hongfei,Chen Junyu等. Integration and Optimization of a High Power Density Inductor for an Interleaved Critical Conduction Mode Buck Converter[J]. Transactions of China Electrotechnical Society, 2022, 37(18): 4688-4696.

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https://dgjsxb.ces-transaction.com/EN/10.19595/j.cnki.1000-6753.tces.211923 OR https://dgjsxb.ces-transaction.com/EN/Y2022/V37/I18/4688

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