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Design of a High-Efficiency CMOS DC-DC Boost Converter Using a Current-Sensing Feedback Method  

Jung Kyung-Soo (Integrant)
Yang Hui-Kwan (University of Seoul, Department of Electrical and Computer Engineering)
Cha Sang-Hyun (University of Seoul, Department of Electrical and Computer Engineering)
Lim Jin-Up (University of Seoul, Department of Electrical and Computer Engineering)
Choi Joong-Ho (University of Seoul, Department of Electrical and Computer Engineering)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.43, no.9, 2006 , pp. 23-30 More about this Journal
Abstract
This paper presents a design of a high-efficiency CMOS DC-DC boost converter using a current-sensing feedback method. High-precision current-sensing circuity is incorporated in order to sense the current flowing in the inductor, which determines the switching scheme of the pulse-width modulation. The external components or large chip area for the frequency compensation can be avoided while maintaining the stable operations of the converter. Various input/output voltage levels can be available through the external resistor strings. The designed DC-DC converter is fabricated in a 0.18-um CMOS technology with a thick-gate oxide option. The converter shows the maximum efficiency over 90% for the output voltage of 3.3V and load current larger than 200mA. The load regulation is 1.15% for the load current change of 100mA.
Keywords
CMOS; DC-DC Converter; Boost; Current Sensing Feedback; Pulse Width Modulation (PWM);
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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