標題: A Fully Integrated Step-Down Switched-Capacitor DC-DC Converter With Dual Output Regulation Mechanisms
作者: Chen, Po-Han
Cheng, Hao-Chung
Chen, Po-Hung
電子工程學系及電子研究所
Department of Electronics Engineering and Institute of Electronics
關鍵字: Voltage ripple modulation;switch array modulation;switched-capacitor DC-DC converter
公開日期: 1-Sep-2020
摘要: This letter proposes a fully integrated step-down switched-capacitor (SC) DC-DC converter using 0.18-mu m CMOS technology for system-on-chip applications. The proposed stepdown switched-capacitor DC-DC converter used two control mechanisms: the switch array modulation technique to regulate the output voltage and the voltage ripple modulation technique to adjust the output voltage ripple of the converter as the loading current varied. As a result, the proposed converter could generate a regulated output voltage with low voltage ripple. The converter core performed at conversion ratios of 1/3 and 1/2 under an input voltage of 1.8 V. The measurement results on 180-nm technology showed that the proposed fully integrated step-down switched-capacitor DC-DC converter could achieve a peak power conversion efficiency of 74.1% and maintain power conversion efficiency at levels over 70% within loading ranges between 1.4 and 5 mA. The output voltage ripple was controlled at levels under 63.4 mV within a loading current ranging between 0.1 and 5 mA.
URI: http://dx.doi.org/10.1109/TCSII.2020.3008972
http://hdl.handle.net/11536/155359
ISSN: 1549-7747
DOI: 10.1109/TCSII.2020.3008972
期刊: IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS
Volume: 67
Issue: 9
起始頁: 1649
結束頁: 1653
Appears in Collections:Articles