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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.19 No.3
- 발행연도
- 2019.6
- 수록면
- 254 - 259 (6page)
- DOI
- 10.5573/JSTS.2019.19.3.254
이용수
초록· 키워드
오류제보하기
A fast transient and low power capacitorless low-dropout (LDO) regulator is proposed for power management in wearable applications. The proposed LDO regulator employs an advanced dynamic biasing (ADB) method, which detects the load transient without using external components including the large resistor and capacitor, and dynamically adjusts the bias current according to the load current (ILOAD). In this way, it maintains the bias current low at steady state and increases it only during load transients, thus achieving a fast transient response while maintaining a low power consumption. The proposed LDO regulator was fabricated using a 0.18-μm CMOS process and occupied a chip area of 0.05 ㎟. The measurement results showed that the proposed LDO regulator achieved an output voltage settling time of less than 1.2 μs when ILOAD changes from 100 mA to 100 μA. In addition, the measured quiescent current was 2.0 μA at light load. Therefore, the proposed LDO regulator is suitable for wearable applications requiring fast transient response and low power consumption.
목차
Abstract
I. INTRODUCTION
II. OPERATION PRINCIPLE OF THE PROPOSED LOW-DROPOUT REGULATOR
III. CIRCUIT IMPLEMENTATION
IV. MEASUREMENT RESULTS
V. CONCLUSIONS
REFERENCES
참고문헌 (6)
참고문헌 신청
Sai Kit Lau, Philip K. T. Mok and Ka Nang Leung, “A low-dropout regulator for SoC with qreduction,” Solid-State Circuits, IEEE Journal of, Vol. 42, No. 3, pp. 658-664, Mar., 2007.
Chenchang Zhan and Wing-Hung Ki, “Outputcapacitor- free adaptive biased low-dropout regulator for system-on-chips,” Circuits Systems I: Fundamental Theory and Applications, IEEE Transactions on, Vol. 57, No. 5, pp. 1017?1028, May., 2010.
Xi Qu, Ze-Kun Zhou and Bo Zhang, “Ultralowpower fast-transient output-capacitor-less lowdropout regulator with advanced adaptive biasing circuit,” Devices & Systems, IET Journal of, Vol. 9, No. 3, pp. 172-180, Aug., 2014.
C. -H. Wu and L. -R. Chang-Chien, “Design of the output-capacitorless low-dropout regulator for nano-second transient response,” Power Electronics, IET Journal of, Vol. 5, No. 8, pp. 1551- 1559, Feb., 2012.
J. Perez-Bailion, A. Marquez, B. Calvo, N. Merdrano and P.A. Martinez, “Fast-transient highperformance 0.18 μm CMOS LDO for batterypowered systems,” Electronics Letters, IET Journal of, Vol. 53, No. 8, pp.551-552, Apr., 2017.
Chenchang Zhan and Wing-Hung Ki, “Outputcapacitor- free adaptive biased low-dropout regulator for system-on-chips,” Circuits Systems I: Fundamental Theory and Applications, IEEE Transactions on, Vol. 57, No. 5, pp. 1017?1028, May., 2010.
Xi Qu, Ze-Kun Zhou and Bo Zhang, “Ultralowpower fast-transient output-capacitor-less lowdropout regulator with advanced adaptive biasing circuit,” Devices & Systems, IET Journal of, Vol. 9, No. 3, pp. 172-180, Aug., 2014.
C. -H. Wu and L. -R. Chang-Chien, “Design of the output-capacitorless low-dropout regulator for nano-second transient response,” Power Electronics, IET Journal of, Vol. 5, No. 8, pp. 1551- 1559, Feb., 2012.
J. Perez-Bailion, A. Marquez, B. Calvo, N. Merdrano and P.A. Martinez, “Fast-transient highperformance 0.18 μm CMOS LDO for batterypowered systems,” Electronics Letters, IET Journal of, Vol. 53, No. 8, pp.551-552, Apr., 2017.
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