Journal of Power Electronics

The Korean Institute of Power Electronics (전력전자학회)
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Two-loop Hysteretic Control of $3^{rd}$ Order Buck Converter

  • Veerachary, M. (Dept. of Electrical Engineering, Indian Institute of Technology Delhi) ;
  • Sharma, Deepen (Dept. of Electrical Engineering, Indian Institute of Technology Delhi)
  • Published : 2007.10.20
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Abstract

In this paper, an analysis and hysteretic controller design of a $3^{rd}$ order buck converter is presented. The proposed hysteretic controller consists of an inner current-loop, just like the conventional cascade control scheme, and an outer voltage-loop for load voltage regulation. Although it is possible to include an inner current loop from different branches of the converter, from the feasibility and operational point of view, the load side capacitor current would be the better choice. The addition of an inner current-loop improves the dynamic performance of the converter while preserving the robustness of the hysteretic control. The controller formulation and closed-loop converter performance analysis are validated through computer simulations. Few experimental results of the proposed converter are given and compared with the buck converter.

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References

  1. Kelvin Ka Sing Leung, Henry Shu-Hung Chung, 'Dynamic hysteresis band control of buck converter with fast transient response,' IEEE Trans. Circuits and Systems, 2005, Vol. 52(7), pp. 398-402 https://doi.org/10.1109/TCSII.2005.850411
  2. Song, C., and Nilles, J. 'Accuracy Analysis of Hysteretic Current-Mode Voltage Regulator,' Proc. IEEE APEC, 2005, pp. 276-280
  3. N. Keskar, G.A. Rincon Mora, 'Self-Stabilizing, Integrated, Hysteretic Boost DC-DC Converter,' The 30th Annual Conference of the IEEE Industrial Electronics Society, 2004, pp. 586-591
  4. Wei Gu and Issa Batarseh, 'Interleaved Synchronous Buck Regulator with hysteretic voltage control,' IEEE Power Electronics Conference, 2001, pp. 1512-1516
  5. Chung-Hsien Tso & Jiin-Chuan Wu, 'A Ripple Control Buck Regulator with fixed output frequency,' IEEE Power electronics letters, 2003, Vol. 1(3), pp. 61-63 https://doi.org/10.1109/LPEL.2003.819643
  6. Veerachary. M, 'Control of switched capacitor step-down buck converter,' IEEE International Conference, IECON2006, pp. 2073-2076
  7. Veerachary. M, Balasudhakar. S, 'Peak-current mode control of hybrid switched capacitor converter,' IEEE International conference, PEDES2006, CD ROM proceedings
  8. Veerachary. M, Narasa Reddy. T, 'Voltage-mode control of hybrid switched-capacitor converter, IEEE International Conference, IECON2006, pp. 2450-2453
  9. PSIM user manual, 2004
  10. Robert W. Erickson, Dragan Maksimovic, 'Fundamentals of Power Electronics,' Springer, 2001