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http://dx.doi.org/10.6113/TKPE.2022.27.2.106

Analysis and Design for Ripple Generation Network Circuit in Constant-on-Time-Controlled Fly-Buck Converter  

Cho, Younghoon (Dept. of Energy & Electrical Engineering, Tech University of Korea)
Jang, Paul (Dept. of Energy & Electrical Engineering, Tech University of Korea)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.27, no.2, 2022 , pp. 106-117 More about this Journal
Abstract
Multiple output converters can be utilized when various output voltages are required in applications. Recently, one of the multiple output converters called fly-buck has been proposed, and has attracted attention due to the advantage that multiple output can be easily obtained with a simple structure. When constant on-time (COT) control is applied, the output ripple voltage must be treated carefully for control stability and voltage regulation characteristics in consideration of the inherent energy transfer characteristics of the fly-buck converter. This study analyzes the operation principle of the fly-buck converter with a ripple generation network and presents the design guideline for the improved output voltage regulation. Validity of the analysis and design guideline is verified using a 5 W prototype of the COT controlled fly-buck converter with a ripple generation network for telecommunication auxiliary power supply.
Keywords
Fly-buck converter; Constant-on-time control; Ripple generation network; Ripple injection techniques;
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1 Y. Cho and P. Jang, "Analysis and design for output voltage regulation in constant-on-time-controlled fly-buck converter," Electronics, Vol 10, No. 16, pp. 1886, Aug. 2021.   DOI
2 D. Mohol, G. Bhagwat, and A. Garg, "Transient response versus ripple-An analysis of ripple injection techniques used in hysteretic controllers," Texas Instruments, Dallas, TX, USA, Tech. Rep., 2014. [Online]. Available: http://www.ti.com/lit/an/slva653/slva653.pdf.
3 M. Karlsson and O. Persson, "Isolated fly-buck converter, switched mode power supply, and method of measuring a voltage on a secondary side of an isolated fly-buck converter," International Patent 137852, Sep. 2015.
4 S. B. Myneni and S. Samanta, "A comparative study of different control strategies for isolated buck (fly-buck) converter," in 2018 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), pp. 1-5, 2018.
5 G. Tosun, O. C. Kivanc, E. Oguz, O. Ustun, and R. N. Tuncay, "Development of high efficiency multi-output flyback converter for industrial applications," in International Conference on Electrical and Electronics Engineering (ELECO), pp. 1102-1108, 2015.
6 G. Nayak and S. Nath, "Decoupled voltage-mode control of coupled inductor single-input dual-output buck converter," IEEE Transactions on Industry Applications, Vol. 56, No. 4, pp. 4040-4050, Jul./Aug. 2020.   DOI
7 X. Fang and Y. Meng, "Isolated bias power supply for IGBT gate drives using the fly-buck converter," in IEEE Applied Power Electronics Conference and Exposition (APEC), pp. 2373-2379, 2015.
8 M. Tahan, D. Bamgboje, and T. Hu, "Flyback-based multiple output DC-DC converter with independent voltage regulation," in IEEE International Symposium on Power Electronics for Distributed Generation Systems (PEDG), pp. 1-8, 2018.
9 R. Wai and K. Jheng, "High-efficiency single-input multiple-output DC-DC converter," IEEE Transactions on Power Electronics, Vol. 28, No. 2, pp. 886-898, Feb. 2013.   DOI
10 R. Wai and J. Liaw, "High-efficiency-isolated single-input multiple-output bidirectional converter," IEEE Transactions on Power Electronics, Vol. 30, No. 9, pp. 4914-4930, Sep. 2015.   DOI
11 Perinov, A. Marzuki, G. Wibisono, and C. Hudaya, "Design of single input multiple output full bridges DC-DC converters for personal computer power supply," in IEEE International Conference on Innovative Research and Development (ICIRD), pp. 1-5, 2019.
12 H. Park and S. Kim, "Single inductor multiple output auto-buck-boost DC-DC converter with error-driven randomized control," Electronics, Vol. 9, No. 9, pp. 1335, Aug. 2020.   DOI
13 W. Wang, D. X. Lu, Q. Q. Chai, Q. B. Lin, and F. H. Cao, "Analysis of fly-buck converter with emphasis on its cross-regulation," IET Power Electron.., Vol. 10, No. 3, pp. 292-301, Sep. 2017.   DOI
14 S. B. Myneni and S. Samanta, "Time domain analysis of isolated buck (f1y-buck) converter," in IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), pp. 1-5, 2018.