The Japan Society of Applied Physics

2023 International Conference on Solid State Devices and Materials

2023 International Conference on Solid State Devices and Materials

Sep 5, 2023 - Oct 31, 2023
Nagoya Congress Center

10:00 AM - 10:15 AM

[J-3-05] High-Efficiency and Wide-Load Current Range LDO Regulator with Dynamic Loop Gain Control Technique

Yu-Lung LO1, ○YU-CHUN CHIU1, Chia-Wen Lin1, Wei-Bin Yang2 (1. Department of Electronic Engineering, National Kaohsiung Normal University, Kaohsiung City, Taiwan (Taiwan), 2. Department of Electrical Engineering, Tamkang University, New Taipei City, Taiwan (Taiwan))

https://doi.org/10.7567/SSDM.2023.J-3-05

This paper proposes a low dropout regulator design with dynamic loop gain control for wide-load current range. It uses a multi-phase error detection mechanism, a tri-state damping selector, and a dynamic integration shift register to predict load variation and adjust loop gain for fast response and low power consumption. The design also lowers output voltage ripple to improve achieve high current efficiency.