A fast-transient LDO based on buffered flipped voltage follower

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 bot...

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Bibliographic Details
Published in2010 IEEE International Conference of Electron Devices and Solid-State Circuits pp. 1 - 4
Main Authors Hua Chen, Ka Nang Leung
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.12.2010
Subjects
Flipped voltage follower
Load modeling
Loading
low dropout regulator and power management
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Summary: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.
ISBN:9781424499977
1424499976
DOI:10.1109/EDSSC.2010.5713775