Title :
A fast-transient LDO based on buffered flipped voltage follower
Author :
Chen, Hua ; Leung, Ka Nang
Author_Institution :
Dept. of Electron. Eng., Chinese Univ. of Hong Kong, Hong Kong, China
Abstract :
In this work, the analysis of the flipped voltage follower (FVF) based single-transistor-control (STC) LDO is given. Two evolved versions of FVF, cascaded FVF (CAFVF) and level shifted FVF (LSFVF), are studied. Then, a buffered FVF (BFVF) for LDO application is proposed, combining the virtues of both CAFVF and LSFVF structures. It alleviates the minimum loading requirement of FVF and the simulation result shows that it has faster transient response and better load regulation.
Keywords :
operational amplifiers; transient response; voltage regulators; buffered flipped voltage follower; cascaded FVF; level shifted FVF; load regulation; single-transistor-control low dropout regulators; transient response; Load modeling; Loading; Flipped voltage follower; low dropout regulator and power management;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2010 IEEE International Conference of
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9997-7
DOI :
10.1109/EDSSC.2010.5713775
