Design of PFM Boost Converter with Dual Pulse Width Control 


Vol. 40,  No. 9, pp. 1693-1698, Sep.  2015


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  Abstract

This paper proposed a PFM(pulse-frequency modulator) boost converter which has dual pulse-width. The PFM boost converter is composed of BGR(band gap voltage reference generating circuit), voltage reference generating circuit, soft-start circuit, error amplifier, high-speed comparator, inductor current sensing circuit and pulse-width generator. Converter has different inductor peak current so it has wider load current range and smaller output voltage ripple. Proposed PFM boost converter generates 18V output voltage with input voltage of 3.7V and it has load current range of 0.1~300mA. Simulation results show 0.43% output voltage ripple at ligh load mode and 0.79% output voltage ripple at heavy load mode. Converter has efficiency 85% at light lode mode and it has maximum 86.4% at 20mA load current.

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  Cite this article

[IEEE Style]

J. Choi, Y. Jo, T. Lee, K. Yoon, "Design of PFM Boost Converter with Dual Pulse Width Control," The Journal of Korean Institute of Communications and Information Sciences, vol. 40, no. 9, pp. 1693-1698, 2015. DOI: .

[ACM Style]

Ji-San Choi, Yong-Min Jo, Tae-Heon Lee, and Kwang-Sub Yoon. 2015. Design of PFM Boost Converter with Dual Pulse Width Control. The Journal of Korean Institute of Communications and Information Sciences, 40, 9, (2015), 1693-1698. DOI: .

[KICS Style]

Ji-San Choi, Yong-Min Jo, Tae-Heon Lee, Kwang-Sub Yoon, "Design of PFM Boost Converter with Dual Pulse Width Control," The Journal of Korean Institute of Communications and Information Sciences, vol. 40, no. 9, pp. 1693-1698, 9. 2015.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880