Capless Low-Dropout Regulator with Voltage Damper and Body Bias Feedback with Fast Transient Response

  • Jae Eun Kim School of Electrical Engineering, Korea University, Seoul, Korea
  • Yong Sin Kim Korea University
DOI: https://doi.org/10.23075/jicas.2023.9.4.004
Keywords: Fast Load Transient, Low-dropout regulator(LDO), Voltage Damper

Abstract

This paper presents an output cap-less low-dropout regulator (LDO) using a voltage damper and body bias feedback for fast load transient response. The voltage damper makes load transient fast. To make the LDO react to relatively slow distortion of the output, the body bias feedback is included. The proposed LDO regulator is fabricated in a 0.18µm CMOS process with an active area of 0.026mm2 and an on-chip capacitance of 9.32pF. The operating conditions are set to an input voltage of 1.8V, a maximum load current of 100mA, and an output voltage of 1.6V. The maximum undershoot was 284 mV and the maximum overshoot was 199 mV.

Author Biographies

Jae Eun Kim, School of Electrical Engineering, Korea University, Seoul, Korea

Jae Eun Kim received the B.S. degree in electrical engineering from Hongik University, Seoul, Korea, in 2022. She is currently working toward the M.S. degree in School of Electrical Engineering, Korea University, Seoul, Korea. Her research interests include Power management ICs.

Yong Sin Kim, Korea University

Yong Sin Kim (S’03-M’14-SM’18) received B.S. and M.S. degrees in Electronics from Korea University, Seoul, Korea, in 1999 and 2003, respectively. He obtained his Ph.D. in Electrical Engineering from University of California at Santa Cruz, USA in 2008. From 2008 to 2012, he worked at University of California Advanced Solar Technologies
Institute (UC Solar), where he researched on optimizing power in distributed photovoltaic systems. From 2012 to
2014, he was with School of Electrical and Electronics Engineering, Chung-Ang University, Seoul, Korea, where
he was involved in development of sensors for humanmachine interface. Since March. 2014, he has been with
School of Electrical Engineering, Korea University, Seoul, Korea. His current research interests include crossdisciplinary integration of circuits and systems for energy harvesting and sensor applications.

Homepage : http://oasis.korea.ac.kr/

Published
2023-10-01
How to Cite
Kim, J. E., & Kim, Y. S. (2023). Capless Low-Dropout Regulator with Voltage Damper and Body Bias Feedback with Fast Transient Response. Journal of Integrated Circuits and Systems, 9(4). https://doi.org/10.23075/jicas.2023.9.4.004
Issue
Vol 9 No 4 (2023)
Section
Articles