A Fully Integrated Circuit for High Current Multiple-Output

Jeongmyeong Kim; Wanyeong Jung

doi:10.23075/jicas.2023.9.4.003

Jeongmyeong Kim Korea Advanced Institute of Science and Technology
Wanyeong Jung Korea Advanced Institute of Science and Technology

DOI: https://doi.org/10.23075/jicas.2023.9.4.003

Keywords: Digital-to-analog converter (DAC), Low dropout regulator (LDO)

Abstract

This paper presents a fully integrated circuit for high current multiple-output that can independently control supply voltage of several circuit building blocks. This work combines digital-to-analog converters (DACs) and low dropout regulators (LDOs) to offer a high output voltage resolution and a high output current capability. A resistor-floating-resistor-string DACs achieves a 10-bit resolution with a small silicon area. A multi-stage LDO removes voltage offsets with high loop gain and improves transient responses with high gain-bandwidth product. A test chip fabricated in a 0.18μm CMOS process achieves an output voltage range of 0.6 V to 1.3 V, maximum output current of 5 mA, voltage regulation accuracy of 0.7 mV with 1.8V V_DD.

Author Biographies

Jeongmyeong Kim, Korea Advanced Institute of Science and Technology

Jeong Myeong Kim received the B.S. degree in electrical and computer engineering from Ajou University, Suwon, South Korea, in 2020, and the M.S. degree in electrical engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea, in 2022, where he is currently pursuing the Ph.D. degree in electrical engineering. His research interests include analog integrated circuit design, power management integrated circuits.

Wanyeong Jung, Korea Advanced Institute of Science and Technology

Wan Yeong Jung received the B.S. degree from Seoul National University, Seoul, South Korea, in 2012, and the M.S. and Ph.D. degrees in electrical engineering from the University of Michigan, Ann Arbor, MI, USA, in 2014 and 2017, respectively. He was a Research Intern with NVIDIA Research, Austin, TX, USA, in 2016. From 2017 to 2019, he was a Post-Doctoral Associate with Microsystems Technology Laboratories, Massachusetts Institute of Technology, Cambridge, MA, USA. Since 2019, he has been an Assistant Professor with the School of Electrical Engineering, Korea Advanced Institute of Science and Technology, Daejeon, South Korea. His research interests include low-power circuits and systems, energy-efficient edge computing, and Internet of Things (IoT).

Homepage : https://seed.kaist.ac.kr/