8
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FEATURESDESCRIPTION
应用程序
tps40054-q1,tps40055-q1,tps40057-q1
SLAS482A–AUGUST2005–REVISEDNOVEMBER2005
宽-inputsynchronousbuckcontroller
•
QualifiedForAutomotiveApplications
thetps4005xisafamilyofhigh-电压,wideinput
(8vto40v),同步,步骤-下变频器.
•
客户-specificconfigurationcontrolcan
TheTPS4005xfamilyoffersdesignflexibilitywitha
besupportedalongwithmajor-变更
varietyofuserprogrammablefunctions,包括
批准
软启动,uvlo,operatingfrequency,电压
•
OperatingInputVoltage8Vto40V
前馈,高-sidecurrentlimit,andloop
•
inputvoltagefeed-forwardcompensation
补偿.
•
&指示灯;1%internal0.7-vreference
TheTPS4005xarealsosynchronizabletoanexternal
•
programmablefixed-frequencyupto1-mhz
供应.thetps4005xincorporatesmosfetgate
driversforexternaln-channelhigh-sideand
VoltageModeController
synchronousrectifier(高级)mosfets.gatedrive
•
internalgatedriveoutputsforhigh-sideand
logicincorporatesanti-crossconductioncircuitryto
synchronousn-channelmosfets
preventsimultaneoushigh-sideandsynchronous
•
16-pinpowerpad™package(
θ
jc
=25
°
c/w)
rectifierconduction.
•
ThermalShutdown
thetps4005xusesvoltagefeed-forwardcontrol
•
ExternallySynchronizable
techniquestoprovidegoodlineregulationoverthe
宽(4:1)inputvoltagerangeandfastresponseto
•
programmablehigh-sidesenseshort-电路
inputlinetransientswithnearconstantgainwithinput
保护
variationwhicheasesloopcompensation.这
•
programmableclosed-loopsoft-开始
externallyprogrammablecurrentlimitprovides
•
tps40054sourceonly(
ProductPreview
)
脉冲-由-pulsecurrentlimit,aswellasahiccupmode
operationutilizinganinternalfaultcounterforlonger
•
tps40055source/水槽(
ProductPreview
)
durationoverloads.
•
tps40057source/sinkwithv
出点
Prebias
•
PowerModules
•
联网/电信
•
工业/服务器
•
AutomotiveTelematics
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
powerpadisatrademarkoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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