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TPS2492
TPS2493
SA65B–JULY2010–REVISEDOCTOBER2011
PositiveHigh-VoltagePower-LimitingHotswapController
WithAnalogCurrentMonitorOutput
CheckforSamples:TPS2492,TPS2493
FEATURES
9-Vto80-VOperation
High-SideDriveforExternalN-FET
ProgrammableFETPowerLimit
ProgrammableLoadCurrentLimit
ProgrammableFaultTimer
LoadCurrentMonitorOutput
PowerGoodandFaultOutputs
Enable/UV,OVInputs
LatchorAutoRestartAfterFault
EVMAvailableSLUU425
CalculationToolAvailableSLVC033
•
•
•
•
•
•
•
•
•
•
•
DESCRIPTION
TheTPS2492andTPS2493areeasy-to-use,positive
highvoltage,14-pinHotswapControllersthatsafely
driveanexternalN-channelFETtocontrolload
grammablepowerfoldbackprotection
ensuresthattheexternalFEToperatesinsideitssafe
operatingarea(SOA)duringoverloadconditionsby
grammable
currentlimitandfaulttimerensurethesupply,
externalFET,andloadarenotharmedby
esincludeinrushcurrentlimiting,
controlledloadturn-on,interfacingtodown-stream
DC-to-DCconverters,andpowerfeedprotection.
Theanalogcurrentmonitoroutputprovidesasignal
readyforsamplingwithanexternalA/Dconverter.
Additionalfeaturesincludeprogrammableovervoltage
andundervoltageshutdown,power-goodfor
coordinatingloadswithinrush,andafaultindicatorto
indicateanover-currentshutdown.
APPLICATIONS
•
•
•
•
•
ServerBackplanes
StorageAreaNetworks(SAN)
MedicalSystems
Plug-inModules
BaseStations
TypicalApplicationCircuit
R
SENSE
0.01W
V
IN
R
GATE
10W
R1
C1
1
D1
R2
UVEN
141312
GATE
11
OUT
FLT9
8
6
c
o
M1
V
OUT
V
LOGIC
470 kW
470 kW
VCC
SENSE
DRAIN-TO-SOURCE CURRENT
vs
DRAIN-TO-SOURCE VOLTAGE
1000
Operation in the gray area is limited by R
DS(on)
I
D
-
D
r
a
i
n
-
t
o
-
S
o
u
r
c
e
C
u
r
r
e
n
t
-
A
100
TPS2492/93
VREF
2
R4
41.2 kW
PG
OV
5
PROG
3
IMON
GNDTIMER
74
100ms
10
1 ms
R3
C
T
0.068mF
R5
8.25 kW
P
LIM
= 34 W
I
LIM
= 5A
Timeout = 10 ms
1
10 ms
Programmed SOA10 ms
0.1
110100
V
DS
- Drain-to-Source Voltage - V
1000
Pleasebeawarethatanimportantnoticeconcerningavailability,standardwarranty,anduseincriticalapplicationsofTexas
Instrumentssemiconductorproductsanddisclaimerstheretoappearsattheendofthisdatasheet.
PRODUCTIONDATAinformationiscurrentasofpublicationdate.
ProductsconformtospecificationsperthetermsoftheTexas
tionprocessingdoesnot
necessarilyincludetestingofallparameters.
Copyright©2010–2011,TexasInstrumentsIncorporated
/
TPS2492
TPS2493
SLUSA65B–JULY2010–
PRODUCTINFORMATION
(1)
TEMPERATURE
-40°Cto125°C
(1)
FUNCTION
Latched
Retry
PACKAGE
PW14
PARTNUMBER
TPS2492PW
TPS2493PW
Forthemostcurrentpackageandorderinginformation,seethePackageOptionAddendumattheendofthisdocument,orvisitthe
.
ABSOLUTEMAXIMUMRATINGS
(1)
overrecommendedT
J
andvoltageswithrespecttoGND(unlessotherwisenoted)
VALUE
VCC,SENSE,UVEN,OUT
PROG,OV
VCC–SENSE
GATE,PG,FLT
TIMER,VREF,IMON
PG,FLT
PROG
VREF
HBM
CDM
(1)
Inputvoltagerange
Differentialvoltage
Outputvoltagerange
Sinkcurrent
Sourcecurrent
ESDrating
-0.3to100
-0.3to6
-1.5to1.5
-0.3to100
-0.3to6
10
2
2
2
0.5
kV
mA
V
UNIT
Stressesbeyondthoselistrestressratings
only,andfunctionaloperationofthedeviceattheseoranyotherconditionsbeyondthoseindicatedunderrecommendedoperating
retoabsolute-maximum-ratedconditionsforextendedperiodsmayaffectdevicereliability.
THERMALINFORMATION
THERMALMETRIC
(1)
θ
JA
θ
JB
ψ
JT
ψ
JB
(1)
(2)
(3)
(4)
(5)
Junction-to-ambientthermalresistance
(2)
Junction-to-boardthermalresistance
(3)
Junction-to-topcharacterizationparameter
(4)
Junction-to-boardcharacterizationparameter
(5)
VALUE
116.4
53.8
1.4
58.8
°C/W
UNITS
Formoreinformationabouttraditionalandnewthermalmetrics,seetheICPackageThermalMetricsapplicationreport,SPRA953.
Thejunction-to-ambientthermalresistanceundernaturalconvectionisobtainedinasimulationonaJEDEC-standard,high-Kboard,as
specifiedinJESD51-7,inanenvironmentdescribedinJESD51-2a.
Thejunction-to-boardthermalresistanceisobtainedbysimulatinginanenvironmentwitharingcoldplatefixturetocontrolthePCB
temperature,asdescribedinJESD51-8.
Thejunction-to-topcharacterizationparameter,ψ
JT
,estimatesthejunctiontemperatureofadeviceinarealsystemandisextracted
fromthesimulationdataforobtainingθ
JA
,usingaproceduredescribedinJESD51-2a(sections6and7).
Thejunction-to-boardcharacterizationparameter,ψ
JB
,estimatesthejunctiontemperatureofadeviceinarealsystemandisextracted
fromthesimulationdataforobtainingθ
JA
,usingaproceduredescribedinJESD51-2a(sections6and7).
RECOMMENDEDOPERATINGCONDITIONS
overrecommendedT
J
andvoltageswithrespecttoGND(unlessotherwisenoted)
MIN
VCC
PROG
VREF
IMON
T
J
Inputvoltagerange
Sourcingcurrent
capacitiveloading
Sourcingcurrent
Junctionoperatingtemperature-40
9
0.4
0
0
NOMMAX
80
4
1
1000
1.9
125
UNIT
V
mA
pF
mA
°C
2SubmitDocumentationFeedback
Copyright©2010–2011,TexasInstrumentsIncorporated
ProductFolderLink(s):TPS2492TPS2493
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