Title :
An output capacitorless low-dropout regulator based on flipped voltage follower
Author :
Xiliang Liu ; Zheng Song ; Jia Wen ; Baoyong Chi
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
An output capacitor-less low-dropout (LDO) regulator based on flipped voltage follower (FVF) for system-on-chip (SoC) application is presented. With a common-gate amplifier and two-pole system, it evidently simplifies the architecture of the LDO regulator and achieves the stability more easily. Implemented in SMIC 55nm CMOS, the proposed LDO regulator only consumes 15 μA net current from 1.5V power supply, with a minimum dropout voltage of 200 mV. With 16pF total compensation capacitance, it can provide 0-30mA load current with a load capacitance range of 0-300pF.
Keywords :
CMOS integrated circuits; circuit stability; operational amplifiers; system-on-chip; FVF; LDO; SMIC CMOS technology; SoC application; capacitance 0 pF to 300 pF; common-gate amplifier; compensation capacitance; current 0 mA to 30 mA; current 15 muA; flipped voltage follower; output capacitorless low-dropout regulator; size 55 nm; system-on-chip application; two-pole system; voltage 1.5 V; voltage 200 mV; Capacitance; Capacitors; Circuit stability; Regulators; System-on-chip; Transistors; Voltage control;
Conference_Titel :
Solid-State and Integrated Circuit Technology (ICSICT), 2014 12th IEEE International Conference on
Conference_Location :
Guilin
Print_ISBN :
978-1-4799-3296-2
DOI :
10.1109/ICSICT.2014.7021203
