A Low-Ripple Charge Pump based on a Parallelized Ring Oscillator with Latches

  • Woo Jin Jang Daegu Gyeongbuk Institute of Science and Technology (DGIST)
  • Yeon Jae Shin Daegu Gyeongbuk Institute of Science and Technology
  • Jung Hyup Lee Daegu Gyeongbuk Institute of Science and Technology
DOI: https://doi.org/10.23075/jicas.2023.9.3.006
Keywords: Small size, Charge pump, Multi-phase, Low-ripple, Efficiency

Abstract

The circuit system demands high level of integrity as the IoT(Internet of Things) emerges. The PMICs(Power Man- agement Integrated Circuits) often required with strict conditions such as highly limited area and power consumption. Switched- capacitor DC-DC converter is one of the best candidates to meet these demands with its size and efficiency. In this paper, we designed a high efficiency switched-capacitor based charge pump for integrated circuits. The low-ripple is also achieved with smallest output capacitor among the compared works. This charge pump is fabricated with 0.18µm CMOS process and it consumes the active area of 0.068mm2. The 82.2% peak efficiency(ηmax) and 0.15% output voltage ripple(OVR) is achieved in 1V supply.

Author Biographies

Woo Jin Jang, Daegu Gyeongbuk Institute of Science and Technology (DGIST)

Woo Jin Jang received the B.S. degree in electrical and electronics engineering from Kyungpook National University, Daegu, Korea, in 2022. His re- search interests include power management circuits for emerging ultra-low-power applications.

Yeon Jae Shin, Daegu Gyeongbuk Institute of Science and Technology

Yeon Jae Shin received her B.S. degree in School of Undergraduate Studies, and M.S. degree in the Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu in 2019 and 2021, respectively. Her research interests include power management circuits for energy-harvesting IoT and ultra-low-power applications.

Jung Hyup Lee, Daegu Gyeongbuk Institute of Science and Technology

Jung Hyup Lee (S'04 M'11) received the B.S. degree in electrical and electronics engineering from Kyungpook National University, Daegu, Korea, in 2003, and the M.S. and Ph.D. degrees in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2005 and 2011, respectively. In 2011, he joined the Institute of Microelectronics, Agency for Science, Technology, and Research (A*STAR), Singapore, where he was engaged in the development of high-speed wireless transceivers for biomedical applications and reference clock generators. Since 2016, he is with the Department of Information and Communication Engineering at the Daegu Gyeongbuk Institute of Science and Technology (DGIST), Daegu, South Korea where he is an Associate Professor. His research interests include mixed-signal and analog circuits for low-power biomedical devices and PVT tolerant circuits.

Homepage : https://ins.dgist.ac.kr/

Published
2023-06-30
How to Cite
Jang, W. J., Shin, Y. J., & Lee, J. H. (2023). A Low-Ripple Charge Pump based on a Parallelized Ring Oscillator with Latches. Journal of Integrated Circuits and Systems, 9(3). https://doi.org/10.23075/jicas.2023.9.3.006
Issue
Vol 9 No 3 (2023)
Section
Articles