6,4 mm x 6,6 mm
typical 尺寸
www.ti.com
FEATURESDESCRIPTION
应用程序
VIN Ph值
引导
PGND
vsense
VTTQ
AGND
VBIAS
输入
TPS54372
比较
补偿
网络
REFIN
VDDQ
t − 时间 − 25 ms/div
− 输出 v旧 − 50 mv/div
瞬态响应
v
o
− 输出 电流 − 1一个/div
我
o
v
我
= 5 v,
v
o
= 1.25 v
0 一个 至
2.25 一个
简化SCHEMAtic
TPS54372
SLVS430D–JUNE2002–REVISEDFEBRUARY2005
3-aoutputtracking/terminationsynchronouspwmswitcherwith
integratedfets(swift™)
•
TracksExternallyAppliedReferenceVoltage
asamemberoftheswift™familyofdc/dcregu-
翻译人员,thetps54372low-inputvoltage,高输出
•
60-m
Ω
MOSFETSwitchesforHighEfficiency
电流,同步-buckpwmconverterintegrates
at3-acontinuousoutputsourceorsink
allrequiredactivecomponents.includedonthe
电流
substratewiththelistedfeaturesareatrue,高
•
6%to90%V
我
OutputTrackingRange
业绩,voltageerroramplifierthatenables
•
widepwmfrequency:fixed350khzor
maximumperformanceundertransientconditions
Adjustable280kHzto700kHz
andflexibilityinchoosingtheoutputfilterLandC
组件;anundervoltage-lockoutcircuittopre-
•
LoadProtectedbyPeakCurrentLimitand
ventstart-upuntiltheinputvoltagereaches3v;一个
ThermalShutdown
internallyandexternallysetslow-startcircuittolimit
•
IntegratedSolutionReducesBoardAreaand
入点-rushcurrents;andastatusoutputtoindicatevalid
TotalCost
operatingconditions.
TheTPS54372isavailableinathermallyenhanced
20-pintssop(pwp)powerpad™package,哪个
•
DDRMemoryTerminationVoltage
eliminatesbulkyheatsinks.tiprovidesevaluation
•
ActiveTerminationofGTLandSSTL
modulesandtheSWIFT™designersoftwaretoolto
高-speedlogicfamilies
aidinquicklyachievinghigh-performancepower
supplydesignstomeetaggressiveequipmentdevel-
•
daccontrolled,高-currentoutputstage
opmentcycles.
•
precisionpoint-的-loadpowersupply
SIMPLIFIEDSCHEMATIC
pleasebeawarethatanimportantnoticeconcerningavailability,标准保修,anduseincriticalapplicationsoftexas
instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
swift,powerpadaretrademarksoftexasinstruments.
productiondatainformationiscurrentasofpublicationdate.
copyright©2002–2005,texasinstrumentsincorporated
ProductsconformtospecificationsperthetermsoftheTexas
instrumentsstandardwarranty.productionprocessingdoesnot
必要包括测试所有参数.
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