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3.1Short-CircuitProtectionandFault-ReportingCircuitry
3.2FaultReporting
Short-CircuitProtectionandFault-ReportingCircuitry
TheTAS5152isaself-protectingdevicethatprovidesfaultreporting(includinghigh-temperature
protectionandshort-circuitprotection).TheTAS5152isconfiguredinback-endauto-recoverymodeand,
therefore,resetsautomaticallyafterallerrors(M1,M2,andM3aresetlow).Thismeansthatthedevice
restartsitselfafteranerrorandreportsshortlythroughtheSDerrorsignal.
TheOTWandSDoutputsfromtheTAS5152indicatefaultconditions.PleaserefertotheTAS5152Data
Manualforadescriptionofthesepins.
Table3-1.TAS5152Warning/ErrorSignalDecoding
OTWSDDEVICECONDITION
00High-temperatureerrorand/orhigh-currenterror
01High-temperaturewarning
10Undervoltagelockoutorhigh-currenterror
11Normaloperation,noerrors/warnings
ThetemperaturewarningsignalsattheTAS5518-5152K8EVMboardarewired-ORtoonetemperature
warningsignal(OTW–pin22inthecontrolinterfaceconnector).Shutdownsignalsarewired-ORintoone
shutdownsignal(SD–pin20inthecontrolinterfaceconnector).
Theshutdownsignalswillactivatewiththetemperaturewarningsignaltogivechip-stateinformationas
describedinTable3-1.Devicefault-reportingoutputsareopen-drainoutputs.°
18ProtectionSLEU074–June2006
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