MODELLING AND ANALYSIS OF FULLY INTEGRATED 3:2 SWITCHED CAPACITOR DC-DC CONVERTER

Authors

  • Sunita Saini
  • Davinder Singh Saini

Keywords:

witched-capacitor converter, charge-multiplier, series-parallel, performance analysis, DC-DC converter.

Abstract

A type of DC-DC power converter known as a switched-capacitor converter efficiently changes one voltage level to another by employing switches and capacitors. They provide high-performance point-of-load voltage regulation for digital systems. This paper investigates general steady-state performance model of 3:2 series-parallel switched capacitor DC-DC converter. The existing basic SC converter analysis is extended to derive minimum achievable power loss for efficiency enhancement that suffers from both conduction and switching losses. The method relies on charge-multiplier approach and analysis is done to achieve 48mA load current realized on a 22nm technology node. According to the findings, a unit cell's switch size equates to 1Ω on-resistance, and a switching frequency of at least 200MHz is needed to achieve the target efficiency of more than 85% and an output voltage more than 0.72V.

 

References

Bi, H. 2023. Common Grounded Wide Voltage-Gain Range DC–DC Converter With Zero Input Current Ripple and Reduced Voltage Stresses for Fuel Cell Vehicles. IEEE Transactions on Industrial Electronics, 70:2607-2616.

Krstic, M. 2018. An Optimized, Multiphase Switched-Capacitor DC-DC Converter with Variable-Gain. IEEE Energy Conversion Congress and Exposition (ECCE), 1259-1265.

Lei, H. 2018. Nonisolated High Step-Up Soft-Switching DC-DC Converter Integrating Dickson Switched-Capacitor Techniques. IEEE Energy Conversion Congress and Exposition (ECCE), 1247-1252.

Li, Y. 2022. Analysis and Design of High-Efficiency Modular Multilevel Resonant DC-DC Converter. IEEE Open Journal of Power Electronics, 3:755-771.

Lu, S. 2019. Zero Ripple High-Gain DC/DC Converter Based on Switched Capacitor Network. 4th International Conference on Intelligent Green Building and Smart Grid (IGBSG), 616-622.

Makowski, M. S. 1995. Performance limits of switched-capacitor DC-DC converters. Proceedings of PESC '95 - Power Electronics Specialist Conference, 2:1215-1221.

Peetala, K. 2020. An Area Efficient, High-Resolution Fully Foldable Switched-Capacitor DC-DC Converter with 16% Efficiency Improvement. IEEE International Symposium on Circuits and Systems (ISCAS), 1-5.

Saadatizadeh, Z. 2020. High Step-Up/Down Switched-Capacitor Based Bidirectional DC-DC Converter.IEEE 21st Workshop on Control and Modelling for Power Electronics (COMPEL), 1-6.

Sai, T. 2018. 2/3 and 1/2 Reconfigurable Switched Capacitor DC–DC Converter With 92.9% Efficiency at 62 mW/mm2 Using Driver Amplitude Doubler. IEEE Transactions on Circuits and Systems II: Express Briefs, 65:1654-1658.

Stala, R. 2021. DC-DC Converter With Low Input Current Ripples in Hybrid Switched-Capacitor and Boost Topology. IEEE 19th International Power Electronics and Motion Control Conference (PEMC), 83-88.

Wu, G. 2015. Nonisolated high step-up DC–DC converters adopting switched-capacitor cell. IEEE Trans. Ind. Electron., 62:383-393.

Wu, Y. -E. 2021. A Novel Bidirectional Isolated DC-DC Converter With High Voltage Gain and Wide Input Voltage. IEEE Transactions on Power Electronics, 36:7973-7985.

Downloads

Published

2024-02-28

How to Cite

Sunita Saini, & Davinder Singh Saini. (2024). MODELLING AND ANALYSIS OF FULLY INTEGRATED 3:2 SWITCHED CAPACITOR DC-DC CONVERTER. Journal Punjab Academy of Sciences, 23, 228–233. Retrieved from https://jpas.in/index.php/home/article/view/71