|
|
|
| Coupled Inductors Based on LTCC Technology |
| Wang Laili, Cui Xizhi, Pei Yunqing, Yang Xu, Wang Zhaoan |
| Xi’an Jiaotong University 710049 China |
|
|
|
|
Abstract Point of load (POL) can effectively improve its steady-state and transient response through using inverse-coupled inductors. Therefore the packaging technology of coupled inductors is payed more and more attention. This paper mainly focuses on the analysis and research of the two-phase coupled inductors based on low temperature co-fired ceramic technology(LTCC). Firstly, four structures of coupled inductor based on LTCC technics are proposed and compared; Secondly, an easy and effective mathematical model for caculating inductance is derived, and its accuracy is validated through simulation; Thirdly, an ultra-thin (1.3mm thick) coupled inductor based on LTCC is fabricated, and its test results are also given; Finally, a 12V input, 1.2V/45A output two-phase interleaved buck converter is built for testing the LTCC coupled inductor.
|
|
Received: 03 November 2010
Published: 20 March 2014
|
|
|
|
|
|
[1] 钱照明, 张军明, 谢小高, 等．电力电子系统集成研究进展与现状[J]. 电工技术学报, 2006, 21(3): 1-14.
[2] Wong P L, Xu P, Yang P, et al. Performance improvements of interleaving VRMs with coupling inductors[J]. IEEE Transactions on Power Electronics, 2001, 16: 499-507.
[3] Wong P L, Lee F C, Jia X, et al. A novel modeling concept for multi-coupling core structures[C]. Proceedings of the 16th Applied Power Electronics Conference and Exposition, 2001: 102-108.
[4] Chandrasekaran S, Mehrotra V, Han S, A new matrix integrated magnetics (MIM) structure for low voltage, high current DC-DC converters[C]. Proceedings of the 33rd Power Electronics Specialists Conference, 2002, 1233: 1230-1235.
[5] Jian S, Webb K F, Mehrotra V, An improved current-doubler rectifier with integrated magnetics[C]. Proceedings of the 16th Applied Power Electronics Conference and Exposition, 2002, 832: 831-837.
[6] Li J, Stratakos A, Schultz A, et al. Using coupled inductors to enhance transient performance of multiphase buck converters[C]. Proceedings of the 19th Applied Power Electronics Conference and Exposition, 2004: 1289-1293.
[7] 陈乾宏, 阮新波, 严仰光. 多路输出电源中耦合电感的模型及分析[J]. 电工技术学报, 2001, 16(5): 40-45.
[8] 陈为, 卢增艺, 王凯. 电压调节模块耦合电感性能分析与设计[J]. 电工技术学报, 2009, 24(1): 127-132.
[9] Wang L, Pei Y, Yang X, et al. Three-dimensional integration of high frequency DC-DC converters based on LTCC technology[C]. Proceedings of the IEEE 6th International Power Electronics and Motion Control Conference, 2009: 745-748.
[10] Lim M H F, Zhenxian L, Wyk J D van, Low profile integratable inductor fabricated based on LTCC technology for microprocessor power delivery applications[J]. IEEE Transactions on Components and Packaging Technologies. 2007, 30, 170-177.
[11] Lim M H, Wyk J D van, Lee F C, et al. A class of ceramic-based chip inductors for hybrid integration in power supplies[J]. IEEE Transactions on Power Electronics. 2008, 23: 1556-1564.
[12] Liu Y Li Y, Zhang H, Han L, et al. A multilayer low pass filter fabricated by ferrite and ceramic cofiring system based on LTCC technology[C]. International Conference on Electronic Packaging Technology & High Density Packaging, 2009: 961-964.
[13] Kim H. J, Kim Y J, Kim J R. An integrated LTCC inductor embedding NiZn ferrite[J]. IEEE Transactions on Magnetics, 2006, 42: 2840-2842.
[14] Kim C Y, Kim H J. Kim J R. An integrated LTCC inductor[J]. IEEE Transactions on Magnetics. 2005, 41: 3556-3558.
[15] Wang L, Pei Y, Yu X, et al. A class of coupled inductors based on LTCC technology[C]. Proceedings of the IEEE 25th Applied Power Electronics Conference and Exposition, 2010: 2042-2049. |
|
|
|
2012, Vol. 27 
