Design of the DC-DC Buck Converter for Mobile Application Using PWM/PFM Mode 


Vol. 35,  No. 11, pp. 1667-1675, Nov.  2010


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  Abstract

This paper presents a high efficiency DC-DC buck converter for mobile device. The circuit employes simplified compensation circuit for its portability and for high efficiency at stand-by mode. This device operates at PFM mode when it enters stand-by mode(light load). In order to place the compensation circuit on chip, the capacitor multiplier method is employed, such that it can minimize the compensation block size of the error amplifier down to 30%. The measurement results show that the buck converter provides a peak efficiency of 93% on PWM mode, and 92.3% on PFM mode. The converter has been fabricated with a 0.35㎛ CMOS technology. The input voltage of the buck converter ranges from 2.5V to 3.3V and it generates the output of 3.3V.

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  Cite this article

[IEEE Style]

L. Park, H. Jung, T. Yoo, K. Yoon, "Design of the DC-DC Buck Converter for Mobile Application Using PWM/PFM Mode," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 11, pp. 1667-1675, 2010. DOI: .

[ACM Style]

Li-Min Park, Hak-Jin Jung, Tai-Kyung Yoo, and Kwang-Sub Yoon. 2010. Design of the DC-DC Buck Converter for Mobile Application Using PWM/PFM Mode. The Journal of Korean Institute of Communications and Information Sciences, 35, 11, (2010), 1667-1675. DOI: .

[KICS Style]

Li-Min Park, Hak-Jin Jung, Tai-Kyung Yoo, Kwang-Sub Yoon, "Design of the DC-DC Buck Converter for Mobile Application Using PWM/PFM Mode," The Journal of Korean Institute of Communications and Information Sciences, vol. 35, no. 11, pp. 1667-1675, 11. 2010.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880