Abstract
An accurate circuit of PWM/PFM mode converting and a circuit of auto-adaptively adjusting dimension of power transistor are described. The duty cycle of the signal when the control mode converts can be gained accurately by using ratios of currents and capacitances, and an optimal dimension of power transistor is derived with different loads. The converter is designed by 0.35 µm standard CMOS technology. Simulation results indicate that the converter starts work at 0.8 V input voltage. Combined with synchronized rectification, the transfer efficiency is higher than 90% with full load range, and achieves 97.5% at rating output.
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Todorovic M H, Palma L, Enjeti P. Design of a wide input range DC-DC converter with a robust power control scheme suitable for fuel cell power conversion[C]. In: Proceedings of IEEE Applied Power Electronics Conference and Exposition. Texas, United States, 2004. 374–379.
Nomura H, Fujiwara K, Yoshida M. A new DC-DC converter circuit with larger step-up/down ratio[C]. In: Proceedings of IEEE Power Electronics Specialists Conference. Jeju, Korea, 2006. 1–7.
Huang Yong, Zeng Fan, Zhou Qiang et al. Study on the characteristics of boost converter in hybrid fuel cell city bus[C]. In: Proceedings of IEEE International Conference on Industrial Technology. Hong Kong, China, 2005. 453–458.
Lu Yun, Feng Guang, Liu Yanfei. A large signal dynamic model for DC-to-DC converters with average current control[C]. In: Proceedings of IEEE Applied Power Electronics Conference and Exposition. Texas, United States, 2004. 797–803.
Su Guijia. Design and analysis of a low cost, high performance single phase UPS system[C]. In: Proceedings of IEEE Applied Power Electronics Conference and Exposition. Texas, United States, 2001. 900–906.
Behzad Razavi. Design of Analog CMOS Integrated Circuits[M]. Xi’an Jiaotong University Press, Xi’an, 2002(in Chinese).
Robert W Erickson. Fundamentals of Power Electronics [M]. International Thomson Publishing, New York, 1997.
Itoh J I, Fujii T. A new approach for high efficiency buck-boost DC/DC converters using series compensation[C]. In: Proceedings of IEEE Power Electronics Specialists Conference. Rhodes, Greece, 2008. 2109–2114.
Chen K H, Chien C C, Hsu C H et al. Optimum power-saving method for power MOSFET width of DC/DC converters[J]. Circuits, Devices and Systems, 2007, 1(1): 57–62.
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Supported by National Youth Science Foundation of China(No.60806010).
GAO Jing, born in 1979, female, Dr, lecturer.
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Gao, J., Yao, S., Xu, J. et al. Design of a high efficiency boost DC-DC converter. Trans. Tianjin Univ. 15, 350–354 (2009). https://doi.org/10.1007/s12209-009-0061-y
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DOI: https://doi.org/10.1007/s12209-009-0061-y