Design of a quick response and high performance LDO - Details

Author：

Jin, J. (Jin, J..) | Wu, Y. (Wu, Y..) | Wan, P. (Wan, P..) | Lin, P. (Lin, P..)

Indexed by：

Scopus PKU CSCD

Abstract：

A　LDO　(Low-dropout　regulator)　with　high　stability,　high　bandwidth　and　low　ripple　has　been　presented.　The　work　was　achieved　by　a　pole-zero　tracking　circuit　employing　PMOS　that　worked　in　linear　region　as　a　dynamic　resistance.　And　the　stability　of　the　system　can　be　modulated　based　on　the　change　of　the　load.　A　differentiator　was　also　used　to　enhance　stability　of　the　system.　The　simulation　turns　out　that　it　can　get　a　bandwidth　of　more　than　2.2　MHz,　with　the　current　load　changing　from　1　mA　to　100　mA.　This　LDO　is　verified　in　TSMC　process　of　0.35　μm　CMOS　technology　and　the　test　results　show　that　the　transient　response　time　of　designed　LDO　is　less　than　3　μs　for　a　step　pulsation　between　0　and　100　mA　and　the　maximum　output-voltage　variation　is　less　than　40　mV.　©,　2015,　NUAA　Printing　House.　All　right　reserved.

Keyword：

Low ripple; Low-dropout regulator(LDO); Pole-zero tracking frequency compensation; Transient response

Author Community：

[ 1 ] [Jin, J.]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 2 ] [Wu, Y.]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 3 ] [Wan, P.]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
[ 4 ] [Lin, P.]School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China

Reprint Author's Address：

[Jin, J.]School of Electronic Information and Control Engineering, Beijing University of TechnologyChina

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Source ：

Research and Progress of Solid State Electronics

ISSN： 1000-3819

Year： 2015

Issue： 2

Volume： 35

Page： 176-179

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SCOPUS Cited Count：

ESI Highly Cited Papers on the List： 0 Unfold All

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30 Days PV： 0

Affiliated Colleges：

信息学部

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