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LDOCad – A Behavioral Model Generation Tool for an LDO Linear Regulator

Received: 1 April 2021    Accepted: 10 May 2021    Published: 15 May 2021
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Abstract

Low drop-out (LDO) voltage regulators are widely used in many portable applications, such as cell phones, laptops, and earplugs. However, the design and simulation of the circuit takes a long time. Hence, the behavioral model for an LDO regulator is greatly needed. In this paper, the hybrid modeling method has been illustrated for generating a behavioral model for an LDO regulator circuit. The hybrid modeling method integrates a table-based modeling method and a circuit simplification method for generating an LDO linear regulator behavioral model. Based on research of the automation topologies and algorithms a behavioral model generation tool for an LDO linear regulator, LDOCad, is also described, including the software architecture and different modules of LDOCad. This tool provides the modeler, or circuit designer, with an approach to quickly and automatically generate a behavioral model for an LDO linear regulator. When the netlist processing algorithm, the table generation algorithm, and the modeled node and topology device extraction algorithm are executed, the hybrid model can be generated through the model topology formulator. The algorithms are generic and robust. The models tested demonstrate an accurate match with the performance of the original circuits and achieve from a 5 to 19 times speed improvement in simulations.

Published in International Journal of Systems Engineering (Volume 5, Issue 1)
DOI 10.11648/j.ijse.20210501.14
Page(s) 25-33
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

LDO Regulator, Modeling, Automation

References
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[2] Ashok Bindra; Alan Mantooth, "Modern Tool Limitations in Design Automation: Advancing Automation in Design Tools is Gathering Momentum," in IEEE Power Electronics Magazine Volume 6, Issue 1. 2019, pp. 28-33.
[3] C. Borchers, "Symbolic behavioral model generation of nonlinear analog circuits," Circuits and Systems II: Analog and Digital Signal Processing, IEEE Transactions on, vol. 45, pp. 1362-1371, 2002.
[4] H. Mantooth, L. Ren, X. Huang, Y. Feng and W. Zheng, "A survey of bottom-up behavioral modeling methods for analog circuits," in Circuits and Systems, 2003. ISCAS'03. Proceedings of the 2003 International Symposium on, 2003.
[5] X. Huang, C. S. Gathercole and H. A. Mantooth, "Modeling nonlinear dynamics in analog circuits via root localization," IEEE TRANSACTIONS ON COMPUTER-AIDED DESIGN OF INTEGRATED CIRCUITS AND SYSTEMS, vol. 22, pp. 895, 2003.
[6] G. Odasso and E. Macii, "A table-based macromodel for behavioral delay estimation," in Signals, Systems, and Computers, 1999. Conference Record of the Thirty-Third Asilomar Conference on, 2002, pp. 772-774.
[7] D. Enright and R. Mack, "A high-level approach to modeling nonlinear analog architectures," in Circuits and Systems, 1997. Proceedings of the 40th Midwest Symposium on, 2002, pp. 1306-1309.
[8] P. Y. Kuo, D. Zhou and Z. M. Lin, "A low-dropout regulator with low ESR, low line regulation and high currency efficiency using low output-resistance voltage buffer," in Electron Devices and Solid-State Circuits, 2007. EDSSC 2007. IEEE Conference on, 2008, pp. 473-476.
[9] K. N. Leung and P. K. T. Mok, "A capacitor-free CMOS low-dropout regulator with damping-factor-control frequency compensation," Solid-State Circuits, IEEE Journal of, vol. 38, pp. 1691-1702, 2003.
[10] Yang Hao, Huang Shengming and Duan Quanzhen, "Low-power LDO Design of High-efficiency Class AB OTA Based on Adaptive Biasing," in Journal of Physics: Conference Series Volume 1754, Issue 1. 2021.
[11] Cadence® Virtuoso® Spectre® Circuit Simulator.
[12] Fred L. Drake, "Python Tutorial".
[13] H. A. Mantooth and P. E. Allen, "A higher level modeling procedure for analog integrated circuits," Analog Integr. Cir. Signal Proc., vol. 3, pp. 181-195, 1993.
[14] XiaoLing Huang, "Automatic Behavioral Model Generation of Nonlinear Analog Circuits," pp. 20, 2005.
[15] Simon Schmidt, Max Richter, Jens Oberrath and Paolo Mercorelli, "Control oriented modeling of DCDC converters," in IFAC-PapersOnLineVolume 51, Issue 2. 2018, pp. 331-336.
Cite This Article
  • APA Style

    Yong Gao, Chuanfeng Wei. (2021). LDOCad – A Behavioral Model Generation Tool for an LDO Linear Regulator. International Journal of Systems Engineering, 5(1), 25-33. https://doi.org/10.11648/j.ijse.20210501.14

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    ACS Style

    Yong Gao; Chuanfeng Wei. LDOCad – A Behavioral Model Generation Tool for an LDO Linear Regulator. Int. J. Syst. Eng. 2021, 5(1), 25-33. doi: 10.11648/j.ijse.20210501.14

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    AMA Style

    Yong Gao, Chuanfeng Wei. LDOCad – A Behavioral Model Generation Tool for an LDO Linear Regulator. Int J Syst Eng. 2021;5(1):25-33. doi: 10.11648/j.ijse.20210501.14

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  • @article{10.11648/j.ijse.20210501.14,
      author = {Yong Gao and Chuanfeng Wei},
      title = {LDOCad – A Behavioral Model Generation Tool for an LDO Linear Regulator},
      journal = {International Journal of Systems Engineering},
      volume = {5},
      number = {1},
      pages = {25-33},
      doi = {10.11648/j.ijse.20210501.14},
      url = {https://doi.org/10.11648/j.ijse.20210501.14},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijse.20210501.14},
      abstract = {Low drop-out (LDO) voltage regulators are widely used in many portable applications, such as cell phones, laptops, and earplugs. However, the design and simulation of the circuit takes a long time. Hence, the behavioral model for an LDO regulator is greatly needed. In this paper, the hybrid modeling method has been illustrated for generating a behavioral model for an LDO regulator circuit. The hybrid modeling method integrates a table-based modeling method and a circuit simplification method for generating an LDO linear regulator behavioral model. Based on research of the automation topologies and algorithms a behavioral model generation tool for an LDO linear regulator, LDOCad, is also described, including the software architecture and different modules of LDOCad. This tool provides the modeler, or circuit designer, with an approach to quickly and automatically generate a behavioral model for an LDO linear regulator. When the netlist processing algorithm, the table generation algorithm, and the modeled node and topology device extraction algorithm are executed, the hybrid model can be generated through the model topology formulator. The algorithms are generic and robust. The models tested demonstrate an accurate match with the performance of the original circuits and achieve from a 5 to 19 times speed improvement in simulations.},
     year = {2021}
    }
    

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    T1  - LDOCad – A Behavioral Model Generation Tool for an LDO Linear Regulator
    AU  - Yong Gao
    AU  - Chuanfeng Wei
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    DO  - 10.11648/j.ijse.20210501.14
    T2  - International Journal of Systems Engineering
    JF  - International Journal of Systems Engineering
    JO  - International Journal of Systems Engineering
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    PB  - Science Publishing Group
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    AB  - Low drop-out (LDO) voltage regulators are widely used in many portable applications, such as cell phones, laptops, and earplugs. However, the design and simulation of the circuit takes a long time. Hence, the behavioral model for an LDO regulator is greatly needed. In this paper, the hybrid modeling method has been illustrated for generating a behavioral model for an LDO regulator circuit. The hybrid modeling method integrates a table-based modeling method and a circuit simplification method for generating an LDO linear regulator behavioral model. Based on research of the automation topologies and algorithms a behavioral model generation tool for an LDO linear regulator, LDOCad, is also described, including the software architecture and different modules of LDOCad. This tool provides the modeler, or circuit designer, with an approach to quickly and automatically generate a behavioral model for an LDO linear regulator. When the netlist processing algorithm, the table generation algorithm, and the modeled node and topology device extraction algorithm are executed, the hybrid model can be generated through the model topology formulator. The algorithms are generic and robust. The models tested demonstrate an accurate match with the performance of the original circuits and achieve from a 5 to 19 times speed improvement in simulations.
    VL  - 5
    IS  - 1
    ER  - 

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Author Information
  • Office of Science and Technology Administration, Macro Net Communication Co., Ltd., Beijing, China

  • Space Segment System Design Department, Macro Net Communication Co., Ltd., Beijing, China

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