Design of low-power, fast-transient-response, capacitor-less low-dropout regulator for mobile applications

IEICE Electronics Express

Jinhoon Hyun¹  Junil Moon¹  Soo-won Kim² 

[1] Department of Nano-semiconductor, Korea University;School of Electrical Engineering, Korea University

关键词: capacitor-less low-dropout (LDO) regulator;    transient enhancement;    regulator;    system-on-chip;   

DOI  :  10.1587/elex.13.20160882

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

This paper presents a capacitor-less low-dropout (LDO) regulator for on-chip mobile applications. An additional push-pull current with a capacitive coupling circuit is proposed to significantly enhance the transient response of the LDO regulator. The proposed LDO regulator can deliver an output current of 100 mA with a minimum dropout voltage of 0.4 V. The circuit was modeled and implemented in a 0.35-µm CMOS process with a die area of 0.22 mm2. The experimental results show that the LDO regulator can be recovered within 0.5 µs at a voltage spike less than 90 mV.

【 授权许可】

CC BY