參數(shù)資料
型號(hào): PKJ4618GEPILA
廠商: ERICSSON POWER MODULES AB
元件分類: 電源模塊
英文描述: 1-OUTPUT 65 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT PACKAGE-9
文件頁數(shù): 18/30頁
文件大?。?/td> 1870K
代理商: PKJ4618GEPILA
25
PKJ4000EPIEN/LZT146025R8AEricssonPowerModules,June2007
EMC Specification
TheconductedEMImeasurementwasperformedusinga
moduleplaceddirectlyonthetestbench.
Thefundamentalswitchingfrequencyis140kHzforPKJ
4810EPI@VI=53V,IO=(0.1...1.0)×IOmax.
External filter(classB)
RequiredexternalinputfilterinordertomeetclassBin
EN55022,CISPR22andFCCpart15J.
Thecapacitorsareceramictype.LowESRiscriticalfor
achieveingtheseresults.
Test set-up.
PKJ 4810E PI with filter.
DC
Power
Source
+
-
5H 50
5H 50
LISN
in
out
rcvr
50 ohm input
1 m Twisted Pair
50 ohm temination
Optional Connection
to Earth Ground
Filter
(if used)
Power Module
Resistive
Load
Printed Circuit Board
EMC
Reciver
Computer
Conducted EMI Inputterminalvalue(typ)
PKJ 4810E PI without filter.
C1,2,6: 0.68uF
C3,7: 47uF
C4,5: 3.9nF
L1: Common mode inductor
on 768 uH (Pulse PO 422)
L2: DC choke: 15uH
C1
C2
C3
C6
C7
C5
C4
Layout Recommendation
TheradiatedEMIperformanceoftheDC/DCconverterwill
beoptimisedbyincludingagroundplaneinthePCBarea
undertheDC/DCconverter.Thisapproachwillreturnswitch-
ingnoisetogroundasdirectlyaspossible,withimprove-
mentstobothemissionsandsusceptibility.Ifoneground
traceisused,itshouldbeconnectedtotheinputreturn.
Alternatively,twogroundtracesmaybeused,withthetrace
undertheinputsideoftheDC/DCconverterconnectedto
theinputreturnandthetraceundertheoutputsideofthe
DC/DCconverterconnectedtotheoutputreturn.Makesure
touseappropriatesafetyisolationspacingbetweenthese
tworeturntraces.Theuseoftwotracesasdescribedwill
providethecapabilityofroutingtheinputnoiseandoutput
noisebacktotheirrespectivereturns.
BNC
Connector
to Scope
Ceramic
Capacitor
+Vout
+Sense
Trim
-Sense
-Vout
Load
Tantalum
Capacitor
* Conductor from Vout to capacitors = 50mm [1.97in]
+
0.1uF
10uF
Outputrippleandnoisetestsetup
Output ripple and noise
Thecircuitbelowhasbeenusedfortherippleandnoise
measurementsonthePKJ4000ESeriesDC/DCconverters.
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