AGF600-48S30 DC-DC Converter
ApplicationꢀNoteꢀ
8/15
TypicalꢀApplicationꢀ
AGF600
EMIꢀfilter
Fuse
Vin+
Vo+
In+
Out+
S+
R1
Vdc
C3
C4
C1
C2
Trim
Load
Sꢁ
Inꢁ
Outꢁ
Vinꢁ
Voꢁ
+ON/OFF
ꢁON/OFF
ꢀ
Figureꢀ11ꢀ ꢀ Typicalꢀapplicationꢀ ꢀ
R1:ꢀ24kꢃꢀ(1/2W),ꢀcurrentꢀlimitingꢀresistorꢀ
C1:ꢀ470ꢂF/100Vꢀelectrolyticꢀcapacitor,ꢀP/N:ꢀUPW2A471MHDꢀ(Nichicon)ꢀorꢀequivalentꢀcaps.ꢀ
C2,ꢀC3:ꢀ1ꢂF/100VꢀX7Rꢀceramicꢀcapacitor,ꢀP/N:ꢀC3225X7R2A105KT0L0U(TDK)ꢀorꢀequivalentꢀcapsꢀ
C4:ꢀ1000ꢂF/50Vꢀelectrolyticꢀcapacitor,ꢀP/N:ꢀUPM1H102MHDꢀ(Nichicon)ꢀorꢀequivalentꢀcapsꢀ
Externalꢀfastꢁactingꢀfuseꢀwithꢀaꢀratingꢀofꢀ30Aꢀshouldꢀbeꢀusedꢀinꢀtheꢀapplication.ꢀTheꢀrecommendedꢀ
fuseꢀmodelꢀisꢀ0324030ꢀorꢀ314030ꢀfromꢀLITTELFUSE.ꢀ
RemoteꢀON/OFFꢀ ꢀ
AꢀremoteꢀON/OFFꢀcontrolꢀcircuitꢀisꢀprovidedꢀwhichꢀisꢀisolatedꢀfromꢀtheꢀinputꢀside,ꢀasꢀwellꢀas,ꢀtheꢀ
outputꢀside.ꢀ(Isolationꢀwithstandꢀvoltage:ꢀ1.5kVdc).ꢀ ꢀ
ConnectionꢀofꢀremoteꢀON/OFFꢀterminalꢀisꢀasꢀfollows.ꢀAsꢀshownꢀinꢀtheꢀfigureꢀbelow,ꢀoutputꢀvoltageꢀ
turnsꢀremoteꢀONꢀwhenꢀcurrentꢀisꢀmadeꢀtoꢀflowꢀthroughꢀremoteꢀON/OFFꢀterminal.ꢀRemoteꢀON/OFFꢀ
terminalꢀcanꢀbeꢀcontrolledꢀbyꢀopeningꢀorꢀclosingꢀconnectionsꢀ(withꢀswitchꢀorꢀrelay).ꢀ
Maximumꢀ sourceꢀ currentꢀ forꢀ remoteꢀ ON/OFFꢀ terminalꢀ isꢀ 5mA.ꢀ Therefore,ꢀ setꢀ currentꢀ limitingꢀ
resistorꢀvalueꢀsuchꢀthatꢀthisꢀmaximumꢀsourceꢀcurrentꢀvalueꢀisꢀnotꢀexceeded.ꢀAlso,ꢀtheꢀallowableꢀ
maximumꢀreverseꢀcurrentꢀflowꢀisꢀ5mA.ꢀ
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