Title :
A fast transient output-capacitor-free low-dropout regulator with class-AB control stage
Author :
Min Tan ; Wing-Hung Ki
Author_Institution :
ECE Dept., HKUST, Hong Kong, China
Abstract :
An output-capacitor-free (OCF) low-dropout regulator (LDR) with a class-AB control stage is presented. Due to the use of the class-AB control stage, the proposed design eliminates the need of an additional transient boosting circuitry while maintaining good transient performance. The proposed OCF LDR is simulated in 130nm CMOS technology. It consumes a quiescent current of 5μA, and provides an output current of 100mA with a dropout voltage of lower than 200mV at a supply voltage that ranges from 1.2V to 0.75V. The recovery time is less than 4μs and the output voltage spike is less than 23mV.
Keywords :
CMOS integrated circuits; amplifiers; voltage regulators; CMOS technology; OCF LDR; class-AB control stage; current 100 mA; current 5 muA; output-capacitor-free low-dropout regulator; recovery time; size 130 nm; voltage 1.2 V to 0.75 V; CMOS integrated circuits; Capacitors; Logic gates; Manganese; Regulators; Stability analysis; Transient analysis;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2014 IEEE International Conference on
DOI :
10.1109/EDSSC.2014.7061244
