Digital Technologies Research and Applications

Review

Single-Inductor Multi-Output DC-DC Switching Converters Using Exclusive Control Method

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https://doi.org/10.54963/dtra.v4i1.880
Kobori, Y., & Kobayashi, H. (2025). Single-Inductor Multi-Output DC-DC Switching Converters Using Exclusive Control Method. Digital Technologies Research and Applications, 4(1), 1–43. https://doi.org/10.54963/dtra.v4i1.880
Volume 4 Issue 1 (2025): In Progress
Copyright (c) 2025 Yasunori Kobori, Haruo Kobayashi
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Authors

  • Yasunori Kobori
    Division of Informatics, Bioengineering and Bioscience, Maebashi Institute of Technology, Maebashi Gunma 371-0816, Japan
  • Haruo Kobayashi Division of Electronics and Informatics, Gunma University, Maebashi Gunma 371-8510, Japan https://orcid.org/0000-0002-0990-5522

This review paper presents Single-Inductor Dual-Output (SIDO) and Single-Inductor Multi-Output (SIMO) DC-DC converters with our proposed exclusive control method. First, we provide an overview of three fundamental types of switching converters: the buck converter, the boost converter, and the buck-boost converter, all using Pulse Width Modulation (PWM) signals for their control. Next, we introduce SIDO converters with the exclusive control method, including the PWM control, the ripple control, the hysteretic control, and the soft-switching (with zero-voltage switching). In addition, we introduce its extension to a configuration of the dual-output Single Ended Inductor Converter (SEPIC) with the buck-boost converter, the high boost converter and the multiplied boost converter. Finally, we show exploration of four-output converters using our proposed voltage comparative circuit. The exclusive control method requires a few additional components but does not rely on current sensors. Also, it is not influenced by the output voltage or current value. Furthermore, we look ahead to future research directions for improving the subject.

Keywords:

Switching DC-DC Converter; Single-inductor Dual-output (SIDO); Single-inductor Multi-output (SIMO); Exclusive control; Soft-switching Converter; Single Ended Primary Inductor Converter (SEPIC)

References

  1. Carroll, A.; Heiser, G.. An Analysis of Power Consumption in a Smartphone. In Proceedings of the USENIX Conference on USENIX Annual Technical Conference, Boston, MA, USA, 23–25 June 2010.
  2. Chakraborty, A.; Jha, A.K.; Deo, A.; et al. A Scalable Single-Inductor Multiple-Output DC–DC Converter With Constant Charge-Transfer and Power-Up Sequencing for IoT Applications. IEEE Trans Circuits Syst I 2021, 71, 2964–2975.
  3. Jung, W.; Park, H.; Kim, M.; et al. A 94.9% Efficiency Always-Power-Delivered SIDO Buck Converter With Continuous Current Balancing and Complementary Adaptive-Switching Regulation. IEEE J Solid-State Circuits 2024, 59, 1759–1770.
  4. Kim, S.; Krishnamurthy, H.K.; Sofer, S.; et al. A 1.8W High-Frequency SIMO Converter Featuring Digital Sensor-Less Computational Zero-Current Operation and Non-Linear Duty-Boost. In Proceedings of the IEEE International Solid-State Circuits Conference, San Francisco, CA, USA, 19–23 February 2023.
  5. Kang, G.-G.; Lee, J.-H.; Shin, S.-U.; et al. A 5.6W-Power 96.6%-Efficiency Boost-Oriented SIDO Step-Up/Down DC-DC Converter Embedding Buck Conversion with an Energy-Balancing Capacitor. In Proceedings of the IEEE Symposium on VLSI Technology and Circuits, Honolulu, HI, USA, 12–17 June 2022.
  6. Kim, D.; Kim, S.J.; Jiang, Z.; et al. 10-Output, Single-Inductor-Multiple-Output DC–DC Buck Converter With Integrated Output Capacitors for a Sub-mW System-on-Chip. IEEE Solid-State Circuits Lett 2021, 4, 56–59.
  7. Li, Y.; Huang, M.; Martins, R.P.; et al. A Single-Inductor Multiple-Output DC–DC Converter With Fixed-Frequency Victim-Last Charge Control for Reduced Cross Regulation. IEEE Trans Circuits Syst I 2024, 71, 3904–3914.
  8. Tang, J.; Jiang, J.; Zhao, L.; et al. A Monolithic 3-Level Single-Inductor Multiple-Output Buck Converter with State-Based Non-Linear Control Capable of Handling 1A/1.5ns Transient with On-Die LC. In Proceedings of the IEEE Custom Integrated Circuits Conference, Denver, CO, USA, 21–24 April 2024.
  9. Hung, W.-C.; Chen, C.-W.; Huang, Y.-W.; et al. A Double Step-Down Dual-Output Converter with Cross Regulation of 0.025mV/mA and Improved Current Balance. In Proceedings of the IEEE International Solid-State Circuits Conference, San Francisco, CA, USA, 19–23 Feb. 2023.
  10. Yu, Z.; Mao, F.; Lu, Y. Prediction of Subharmonic Oscillation in SIMO DC-DC Converter with Ordered Power Distributive Control in CCM and Peak Current Mode. In Proceedings of the IEEE International Symposium on Circuits and Systems, Singapore, Singapore, 19–22 May 2024.
  11. Yang, T.H., Wen, Y.H.; Ouyang, Y.J.; et al. A 94.3% Peak Efficiency Adaptive Switchable CCM and DCM Single-Inductor Multiple-Output Converter with 0.03 mV/mA Low Crosstalk and 185 nA Ultralow Quiescent. IEEE J Solid-State Circuits 2022, 57, 2731–2740.
  12. Huang, C.H.; Sun, X.; Chen, Y.; et al. A Single-Inductor 4-Output SoC with Dynamic Droop Allocation and Adaptive Clocking for Enhanced Performance and Energy Efficiency in 65nm CMOS. In Proceedings of the IEEE International Solid-State Circuits Conference, San Francisco, CA, USA, 13–22 Feb 2021.
  13. Salimath, A.; Botti, E.; Gonano, G.; et al. An 86% Efficiency, Wide-Vin SIMO DC–DC Converter Embedded in a Car-Radio IC. IEEE Trans Circuits Syst I 2019, 66, 3598–3609.
  14. Katayama, S.; Sekine, Y.; Kobori, Y.; et al. Study on Multi-Output Configurations of Buck Boost SEPIC, High Boost SEPIC and Multiplied Boost SEPIC. In Proceedings of the 2024 International Technical Conference on Circuits/Systems, Computers and communications, Okinawa, Japan, 02–05 July 2024.
  15. Sekine, Y.; Katayama, S.; Kobori, Y.; et al. Multi-Output SEPIC Multiplied Boost Converter with Exclusive Control. In Proceedings of the 2021 IEEE 14th International Conference on ASIC (ASICON), Kunming, China, 26–29 October 2021.
  16. Sun, Y.; Kobori, Y.; Tran, M.T.; et al. Single-Inductor Dual-Output Converters With PWM, Hysteretic, Soft Switching and Current Controls. J Technol Soc Sci 2020, 4, 7–32.
  17. Kobori, Y.; Tsukiji, N.; Sunaga, Y.; et al. Single-Inductor Dual-Output Soft-Switching Converter with Voltage-mode Resonant Switch. In Proceedings of the 2016 13th IEEE International Conference on Solid-State and Integrated Circuit Technology, Hangzhou, China, 25–28 October 2016.
  18. Li, M.; Kobori, Y.; Zhao, F.; et al. Single-Inductor Dual-Output DC-DC Converter Design with Exclusive Control. Key Eng Mater 2015, 643, 47–52.
  19. Tanaka, S.; Nagashima, T.; Kobori, Y.; et al. Design of Hysteresis Controlled Signal-Inductor Multi-Output DC-DC Converter. Key Eng Mater 2015, 643, 69–77.
  20. Sunaga, Y.; Shiraishi, N.; Asaishi, K.; et al. High Efficiency Single-Inductor Dual-Output DC-DC Converter with ZVS-PWM Control. In Proceedings of the 2015 IEEE 11th International Conference on ASIC, Chengdu, China, 03–06 November 2015.
  21. Kobori, Y.; Zhao, F.; Li, Q.; et al. Single Inductor Dual Output Switching Converter using Exclusive Control Method. In Proceedings of the 4th International Conference on Power Engineering, Energy and Electrical Devices, Istanbul, Turkey, 13–17 May 2013.
  22. Kobori, Y.; Zhu, Q.; Li, M.; et al. Single Inductor Dual Output DC-DC Converter Design with Exclusive Control. In Proceedings of the IEEE Asia Pacific Conference on Circuits and Systems, Kaohsiung, Taiwan, 02–05 December 2012.