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A Dual-Mode DC/DC Buck Converter with Fast Transient Response Control
|關鍵字:||Buck;降壓;PWM;transient response;脈衝寬度調變;暫態響應||出版社:||電機工程學系所||引用:|| M. Brown, Power Supply Cookbook, 2nd Ed, Newnes,2001.  H.W. Whittington, B.W. Flynn, and D.E. Macpherson, Switched Mode Power Supply: design and construction 2nd edtion., Research Studues Press Ltd., 1997.  N. Mohan, T.M. Undeland, and W.P.Robbins, Power Electronics: Converter, Applications, and Design, 2ndEd., New York, Wiley & Sons,1995.  D. O'Sullivan, B. Spruyt, and A. Crausaz, ”PWM conductance control,” IEEE Power Electron. Spec. Conf. Record, pp. 351-359, 1988.  L. Dixon, “Average current mode control of switching power supplies,” in Unitrode Power Supply Design Seminar Handbook (SEM-700), pp.5-1 to 5-14, Unitrode Corporation, MA, 1990.  B.Carsten, “Current mode control for high frequency switch mode,” Power conversion and Intelligent Motion (PCIM), pp. 61-64, April 1986.  C. Deisch, “Simple switching control method changes power converter into a current source,” in Proc. IEEE Power Electronics Specialists Conf., pp. 300-306, 1978.  S. Hsu, A. Brown, L. Rensink, and R. Middlebrook, “Modeling and analysis of switching DC-to-DC converters in constant frequency current programmed mode,” in Proc. IEEE Power Electronics Specialists Conf., pp. 284-301, 1979.  A. I. Pressman, Switching power supply design, McGraw-Hill, New York, 1991.  A. Barrado, R. Vazquez, A. Lazaro, J. Pleite, and E. Olias, “Fast Transient Response with Combined Linear-Non Linear Control applied to Buck Converters,”33th Power Electronics Specialists Conf.,PESC'02, pp. 1587-1592, 2002.  C.F.Lee, and P.K.T.Mok, “A monolithic current-mode CMOS DC-DC converter with on-chip current-sensing technique,” IEEE J.Solid-State Circuits, vol.39, pp.3-14, Jan.2004.  J. Sheng, Z. Chen, and B. Shi, “A 1V supply area effective cmos bandgap reference,” Proceedings of 5th International Conference on ASIC, vol.1, pp. 619-622, Oct. 2003.  C. Yoo, “A CMOS buffer without short-circuit power consumption,” IEEE Transactions on Circuits and Systems II, vol. 47, pp. 935-937, Sept. 2000.  D. Ma, W.-H. Ki, C.-Y. Tsui, and P.K.T. Mok., “Single-Inductor multiple-output switching converter with time-multiplexing control in discontinuous conduction mode,” IEEE Journal of Solid-State Circuit, vol. 38, no. 1, pp.542-547 , Jan.2003.  C. Y. Leung, P. K. T. Mok, and K. N. Leung, “A 1.2V buck converter with a novel on-chip low-voltage current-sensing scheme,” International Symposium on Circuit and System, vol. 5, pp. V-824-827, May 2004.||摘要:||
此穩壓器是使用台灣積體電路製造股份有限公司所提供的0.35μm 2P4M 3.3V/5V Mixed Signal CMOS製程技術來設計與製造，整體晶片面積大約為1.5*1.5mm2。
The design of a DC-DC buck switching regulator for high power conversion efficiency and fast transient response is presented in this thesis. It is suitable for portable electronic applications powered by batteries such as mobile phone, digital camera, PDA, etc.
To make power conversion more efficient, the regulator uses PFM and PWM dual control mode, for light load and heavy load condition, respectively. In addition, a zero current detector is used to reduce the unnecessary power consumption in light load. Furthermore, in order to eliminate the excess large current at the start up of the regulator that may damage the device of the power stage, the soft start circuit is designed. For improving the transient response, a fast transient controller is added to this system to reduce the transient response recovery time. Compared with the original circuit, the recovery time is reduced from 33μs to 12μs when load current suddenly changes from 15mA to 600mA. The dynamic response is effectively improved. Finally, the conversion efficiency could be up to 94%.
The regulator is designed and fabricated with TSMC 0.35μm 2P4M 3.3V/5V Mixed Signal CMOS technology. The chip size is about 1.5*1.5mm2.
|Appears in Collections:||電機工程學系所|
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