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Current–Mode DC-DC Buck Converter with Adaptive DCM Controller and Switch Scaling
|關鍵字:||降壓電路;Buck;直流轉直流;電流模式;DCM控制;開關縮放;DC-DC converter;Current mode;DCM control;Switch Scaling||出版社:||電機工程學系所||引用:|| 尤俊仁, A High Efficiency Buck Regulator with an Analog variable-Frequency Controller , 國立成功大學電機工程學系碩士論文, 中華民國九十七年七月  陳彤伊, Analysis and Design of an Efficient Front-End Circuitry for Wirelessly- Powered HF-Band Implantable Systems, 國立中央大學電機工程學系碩士論文, 中華民國九十六年七月  S. Liu and J. Zhong, “Analysis of energy transfer behavior of buck-boost converters,” in Proc. International Conference on Electric Information and Control Engineering, April 2011, pp. 1173-1176.  S. S. Kudva and R. Harjani, “Fully-integrated on-chip DC- DC converter with a 450X output range,” IEEE Journal of Solid-State Circuits, vol. 46, no.8,pp. 1940-1951, Aug. 2011.  C. H. Chia, P. S. Lei, and C. H. Chang, “A high-speed converter with light-load improvement circuit and transient detector,” in Proc. IEEE International Symposium on Circuit and System, May 2012, pp. 456-459.  T. Y. Man, P. K. T. Mok, and M. Chan, “Analysis of switching-loss-reduction methods for MHz-switching buck converters,” in Proc. IEEE Conference on Electron Devices and Solid-State Circuit, Dec. 2007, pp.1035-1038.  C. L. Wey, C. I Chiu, K. C. Chang, C. H. Hsu, and G. N. Sung, “Design of ultra-wide-load,high-efficient DC-DC buck converters,” in Proc. IEEE International Conference on Electronics Circuits and Systems, Dec. 2011, pp.297-300.  David A. Johns and Ken Martin, Analog Integrated Circuit Design, John Wiley & Sons, Inc.1997.  Y. Ahn, H. Nam, and J. Roh, “A 50-MHz fully-integrated low-swing buck converter using packaging inductors,” IEEE Transaction on Power Electronics,vol. 27, no. 10, pp. 4347-4356, Oct. 2012.  R. B. Ridley, “A new continuous-time model for current-modecontrol with constant frequency, constant on-time, and constant off-time, in CCM and DCM,” in Proc. IEEE Power Electronics Specialists Conference, June 1990, pp. 382-389.  M. Bathily, B. Allard, and F. Hasbani, “A 200MHz integrated buck converter with resonant gate drivers for an RF power amplifier,”IEEE Transaction on Power Electronics, vol. 27, no. 2, pp. 610-613,Feb. 2012.  C. M. Chen, K. H. Hsu, and C. C. Hung, “A high efficiency current-mode DC-DC step-down converter with wide range of output current,” in Proc. IEEE International Midwest Symposium on Circuit and Systems, Aug. 2010, pp. 1009-1012.  J. Wibben and R. Harjani, “A high efﬁciency DC-DC converter using 2 nH integrated inductors,” IEEE Journal of Solid-State Circuits, vol. 43, no. 4, pp. 844–854, Aug. 2008.  Q. Li, M. Lim, J. Sun, A. Ball, Y. Ying, F. C. Lee, and K. D. T. Ngo, “Technology road map for high frequency integrated DC-DC converter,” in Proc. IEEE Applied Power Electronics Conference and Exposition, Feb. 2010, pp. 533-539.  N. Mohan, T. M. Undeland, and W. P. Robbins, Power Electronics, 3nd edition, Chapter7, John Wiley & Sons, Inc., 2003.  H. W. Huang, C. C. Chien, K. H. Chen, and S. Y. Kuo, “Highly efficient tri-mode control of buck converters with load sensing technique,” in Proc. IEEE Power Electronics Specialists Conference, June. 2006, pp.1-4.  S. Abedinpour, B. Bakkaloglu, and S. Kiaei, “A multi-stage interleaved synchronous buck converter with integrated output filter in a 0.18um SiGe process,” in Proc. IEEE International Solid-State Circuits Conference, Feb. 2006, pp.1398-1407.  M.H. Vafaie, E. Adib, and H. Farzanehfard, “A new low voltage swing gate driver for integrated buck converter with synchronous rectifier,” in Proc. Power Electronics and Drive Systems Technology, Feb. 2012, pp. 366-371.  J. C. Tsai,T. Y. Huang,W. W. Lai, and K. H. Chen, “Dual modulation technique for high efficiency in high-switching buck converters over a wide load range,” IEEE Transactions on Circuits and Systems, vol. 58, no. 8, pp. 1671-1680, July 2011.  C. H. Lin, H. W. Huang, and Ke-Horng Chen,“Fast transient technique (FTT) in buck current-mode DC-DC converters for low-voltage SoC systems,” in Proc. IEEE Custom Integrated Circuits Conference, Sept. 2008, pp. 25-28.  M. Du, H. Leeand, and J. Liu, “A 5-MHz 91% peak-power-efficiency buck regulator with auto-selectable peak- and valley-current control,” IEEE Journal of Solid-State Circuits, vol. 46, no. 8, pp. 1928-1939, Aug. 2011.||摘要:||
本論文使用台積電0.18μm CMOS 製程，設計一個具有適應性DCM控制與開關縮放電路電流模式控制的高速降壓電路。現今的可攜式產品與無線感測系統需求下，高速電路的應用使電路被動元件降低，進而縮小電路體積與面積，以符合晶片整合目標。但卻伴隨輕載效率降低的缺點，因此運用適應性DCM控制提升輕載效率，在重載加入開關縮放電路使整體效率提升。
Power management systems convert the battery voltage to the supply voltage needed for different products, such as RF power amplifier circuit , portable products and so on. The guidelines of power management systems are high conversion efficiency, high accuracy, low noise ,small area and low cost. This thesis presents the design of a switching regulator which utilized different negative feedback control circuits with a self-adjusting ability to achieve high conversion efficiency.
This thesis presents a high-speed current-mode control buck converter with an adaptive DCM controller and switch-scaling circuit using TSMC 0.18 μm CMOS process. For the tiny wireless sensor nodes and the portable electronic devices, using high speed converter is necessary. There are many advantages of using high speed converters, such as scaling down the passives and reducing the area and volume of the chip to achieve the goal of “System on a Chip-SOC”.The adaptive DCM controller is used to overcome the poor efficiency of light load and the switch-scaling circuit is utilized to improve the efficiency of the loading region.
The proposed DC-DC converter has over 80% peak efficiency at 50-300 mA . The maximum loading is 300 mA, and all the required passive components are at nanoscale. By using the adaptive DCM controller , the switching frequency is 200kHz-50MHz.The input voltage is 1.8V and the output voltage is 1.2V.The output ripple is below 10% of the output voltage.
|Appears in Collections:||電機工程學系所|
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