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阶梯氧化层新型折叠硅横向双扩散功率器件

段宝兴 李春来 马剑冲 袁嵩 杨银堂

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阶梯氧化层新型折叠硅横向双扩散功率器件

段宝兴, 李春来, 马剑冲, 袁嵩, 杨银堂

New folding lateral double-diffused metal-oxide-semiconductor field effect transistor with the step oxide layer

Duan Bao-Xing, Li Chun-Lai, Ma Jian-Chong, Yuan Song, Yang Yin-Tang
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  • 为了设计功率集成电路所需的低功耗横向功率器件, 提出了一种具有阶梯氧化层折叠硅横向双扩散金属-氧化物-半导体(step oxide folding LDMOS, SOFLDMOS)新结构. 这种结构将阶梯氧化层覆盖在具有周期分布的折叠硅表面, 利用阶梯氧化层的电场调制效应, 通过在表面电场分布中引入新的电场峰而使表面电场分布均匀, 提高了器件的耐压范围, 解决了文献提出的折叠积累型横向双扩散金属-氧化物-半导体器件击穿电压受限的问题. 通过三维仿真软件ISE分析获得, SOFLDMOS 结构打破了硅的极限关系, 充分利用了电场调制效应、多数载流子积累和硅表面导电区倍增效应, 漏极饱和电流比一般LDMOS 提高3.4倍左右, 可以在62 V左右的反向击穿电压条件下, 获得0.74 mΩ·cm2超低的比导通电阻, 远低于传统LDMOS相同击穿电压下2.0 mΩ·cm2比导通电阻, 为实现低压功率集成电路对低功耗横向功率器件的要求提供了一种可选的方案.
    In order to design the power devices with the low loss required for the power integrated circuits (PIC), a new folded silicon LDMOS with the folding step oxide layer (SOFLDMOS) is proposed in this paper for the first time. In this structure, the step oxide layer is covered on the folded silicon surface with a periodic distribution. The surface electric field is optimized to be uniform by introducing a new electric field peak due to the electric field modulation effect by the step oxide layer. The breakdown voltage is improved to solve the breakdown voltage limitation problem in FALDMOS. Obtained in virtue of the ISE simulation are the results that the silicon limit is broken by applying the effects of the electric field modulation, accumulation of majority carriers, and conductive silicon region multiplier in the proposed SOFLDMOS. The saturation current of the drain electron is increased by about 3.4 times compared with that of the conventional LDMOS. When the breakdown voltage is 62 V, an ultra-low specific on-resistance of 0.74 mΩ·cm2 is obtained, which is far less than 2.0 mΩ·cm2 in the conventional LDMOS with the same breakdown voltage. The low loss requirements is achieved for the PIC with the low voltage region by the proposed SOFLDMOS.
    • 基金项目: 国家重点基础研究发展计划(批准号: 2014CB339900, 2015CB351906)、国家自然科学基金重点项目(批准号: 61234006, 61334002)资助的课题.
    • Funds: Project supported by the National Basic Research Program of China (Grant Nos. 2014CB339900, 2015CB351906), and the Key Program of National Natural Science Foundation of China (Grant Nos. 61234006, 61334002).
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    Park I Y, Choi Y K, Ko K Y, Yoon C J, Kim Y S, Kim M Y, Kim H T, Lim H C, Kim N J, Yoo K D 2009 Proceedings of the 21th International Power Semiconductor Devices and ICs Barcelona, Spain, June 15-17, 2009 p192

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  • [1]

    Chen X B, Wang X, Johnny K O S 2000 IEEE Trans. Electron Dev. 47 1280

    [2]

    Yoshiaki T, Katakura H, Takatoshi O, Masanobu I, Hitoshi S 2013 Proceedings of the 25th International Power Semiconductor Devices and ICs Kanazawa, May 26-30, 2013 p145

    [3]

    Mao K, Qiao M, Jiang L L, Jiang H P, Li Z H, Chen W Z, Li Z L, Zhang B 2013 Proceedings of the 25th International Power Semiconductor Devices and ICs Kanazawa, May 26-30, 2013 p397

    [4]

    Chen X B, Johnny K O S 2001 IEEE Trans. Electron Dev. 48 344

    [5]

    Sameh G, Khalil N, Salama C A T 2003 IEEE Trans. Electron Dev. 50 1385

    [6]

    Sameh G, Khalil N, Li Z H, Salama C A T 2004 IEEE Trans. Electron Dev. 51 1185

    [7]

    Park Y, Salama C T 2005 Proceedings of the 17th International Power Semiconductor Devices and ICs Santa Barbara, California, May 26-30, 2005 p163

    [8]

    Zhang B, Chen L, Wu J, Li Z J 2005 International Conference on Communications, Circuits and System Hong Kong, 2005 p1399

    [9]

    Duan B X, Yang Y T, Zhang B 2009 IEEE Electron Dev. Lett. 30 305

    [10]

    Duan B X, Yang Y T 2011 Micro & Nano Lett. 6 881

    [11]

    Nakagawa A, Kawaguchi Y 2000 Proceedings of the 25th International Power Semiconductor Devices and ICs Toulouse, France, May 22-25, 2000 p47

    [12]

    Yung C L, Gan K P, Ganesh S S 2001 IEEE Electron Dev. Lett. 22 407

    [13]

    Duan B X, Yang Y T 2011 IETE Tech. Rev. 28 503

    [14]

    Duan B X, Yang Y T 2012 IETE Tech. Rev. 29 36

    [15]

    Duan B X, Yang Y T 2012 IETE Tech. Rev. 29 276

    [16]

    Duan B X, Zhang B, Li Z J 2005 Solid-State Electron. 49 1965

    [17]

    Duan B X, Zhang B, Li Z J 2006 IEEE Electron Dev. Lett. 27 377

    [18]

    Duan B X, Zhang B, Li Z J 2007 Chin. Phys. Lett. 24 1342

    [19]

    Duan B X, Yang Y T, Zhang B, Hong X F 2009 IEEE Electron Dev. Lett. 30 1329

    [20]

    Duan B X, Yang Y T 2011 IEEE Trans. Electron Dev. 58 2057

    [21]

    Duan B X, Yang Y T, Zhang B, Li Z J 2008 J. Semicond. 29 677

    [22]

    Duan B X, Yang Y T, Zhang B 2010 Solid-State Electron. 54 685

    [23]

    Duan B X, Yang Y T 2012 Chin. Phys. B 21 057201

    [24]

    Duan B X, Yang Y T, Chen J 2012 Acta Phys. Sin. 61 227302 (in Chinese) [段宝兴, 杨银堂, 陈敬 2012 物理学报 61 227302]

    [25]

    Duan B X, Yang Y T 2014 Acta Phys. Sin. 63 057302 (in Chinese) [段宝兴, 杨银堂 2014 物理学报 63 057302]

    [26]

    ISE TCAD Manuals, release 10.0, Synopsys

    [27]

    Appels J A, Collet M G, Hart P A H, Vaes H M J, Verhoeven J F C M 1980 Philips J. Res. 35 1

    [28]

    Duan B X, Yang Y T 2012 Science China Inform. Sci. 55 473

    [29]

    Michael A, Vladimir R 1985 International Electron Devices Meeting Washington, DC, December 1-4, 1985 p736

    [30]

    Park I Y, Choi Y K, Ko K Y, Yoon C J, Kim Y S, Kim M Y, Kim H T, Lim H C, Kim N J, Yoo K D 2009 Proceedings of the 21th International Power Semiconductor Devices and ICs Barcelona, Spain, June 15-17, 2009 p192

    [31]

    Chen Y, Buddharaju K D, Liang Y C, Samudra G S, Feng H H 2007 19th International Power Semiconductor Devices and ICs Jeju, Korea, May 27-30 p177

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出版历程
  • 收稿日期:  2014-08-20
  • 修回日期:  2014-10-20
  • 刊出日期:  2015-03-05

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