Design and implementation of a 3-A source and sink linear regulator for bus terminators

According to the requirements of the bus terminal regulator,a linear regulator with 3-A source-sink current ability is presented.The use of the NMOS pass transistor and load current feedback technique enhances the system current ability and response speed.The method of adaptive zero compensation rea...

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Bibliographic Details
Published inJournal of semiconductors Vol. 33; no. 10; pp. 122 - 128
Main Author 李演明 毛翔宇 文常保 温立民
Format Journal Article
LanguageEnglish
Published 01.10.2012
Subjects
BCD工艺
Buses (vehicles)
Capacitors
Design engineering
Electric potential
NMOS晶体管
Regulators
Semiconductors
Terminals
Voltage
总线
线性稳压器
终端
设计
负载电流
输出电压
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ISSN1674-4926
DOI10.1088/1674-4926/33/10/105011

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Summary:According to the requirements of the bus terminal regulator,a linear regulator with 3-A source-sink current ability is presented.The use of the NMOS pass transistor and load current feedback technique enhances the system current ability and response speed.The method of adaptive zero compensation realizes loop stability over the whole load range for either source or sink loop.Furthermore,the transconductance matching technique reduces the shoot-through current through the output stage to less than 3μA.The regulator has been fabricated with a 0.6-μm 30 V BCD process successfully,and the area size is about 1 mm~2.With a 20μF output capacitor, the maximum transient output-voltage variation is within 3.5%of the output voltage with load step changes of±2 A/lμs.At the load range of±3 A,the variation of output voltage is less than±15 mV.
Bibliography:bus termination regulator; linear regulator; fast response; power management IC
According to the requirements of the bus terminal regulator,a linear regulator with 3-A source-sink current ability is presented.The use of the NMOS pass transistor and load current feedback technique enhances the system current ability and response speed.The method of adaptive zero compensation realizes loop stability over the whole load range for either source or sink loop.Furthermore,the transconductance matching technique reduces the shoot-through current through the output stage to less than 3μA.The regulator has been fabricated with a 0.6-μm 30 V BCD process successfully,and the area size is about 1 mm~2.With a 20μF output capacitor, the maximum transient output-voltage variation is within 3.5%of the output voltage with load step changes of±2 A/lμs.At the load range of±3 A,the variation of output voltage is less than±15 mV.
11-5781/TN
Li Yanming,Mao Xiangyu,Wen Changbao, Wen Limin（ 1 School of Electronic and Control Engineering,Chang＇an University,Xi＇an 710064,China 2 Institute of Electronic CAD,Xidian University,Xi＇an 710071,China）
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SourceType-Scholarly Journals-1
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ISSN:1674-4926
DOI:10.1088/1674-4926/33/10/105011