Integration and Optimization of a High Power Density Inductor for an Interleaved Critical Conduction Mode Buck Converter

被引：0
|
作者：
Ni S. [1 ]
Wu H. [1 ]
Chen J. [1 ]
Hua M. [2 ]
Xing [1 ]
机构：
[1] College of Automation Nanjing University of Aeronautics and Astronautics, Nanjing
[2] Nanjing Research Institute of Electronics Technology, Nanjing
来源：
Diangong Jishu Xuebao/Transactions of China Electrotechnical Society | 2022年 / 37卷 / 18期
关键词：
Buck converter; magnetic integration; planar coupled inductor; wide-input-voltage;
D O I：
10.19595/j.cnki.1000-6753.tces.211923
中图分类号：
学科分类号：
摘要：
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. © 2022 Chinese Machine Press. All rights reserved.
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页码：4688 / 4696
页数：8
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