參數(shù)資料
型號(hào)： PKJ4115EIP
廠商： ERICSSON POWER MODULES AB
元件分類： 電源模塊
英文描述： 1-OUTPUT 100 W DC-DC REG PWR SUPPLY MODULE
封裝： ROHS COMPLIANT, PACKAGE-8
文件頁(yè)數(shù)： 25/33頁(yè)
文件大?。?/td> 2116K
代理商： PKJ4115EIP
31
PKJ4000EPIEN/LZT146025R7AEricssonPowerModules,March2007
Thermal Consideration
Position
Device
Tcritical
RecommendedMaxValue
P1
FR4PWB
Tsurface
125C
P2
Transformer
Tcore
125C
P2
P1
Airflow
General
The PKJ 4000E Series DC/DC converters are designed
to operate in a variety of thermal environments, however
sufficient cooling should be provided to help ensure reliable
operation. Heat is removed by conduction, convection and
radiation to the surrounding environment. Increased airflow
enhances the heat transfer via convection. The available load
current vs. ambient air temperature and airflow at Vin=53 V
for each model is according to the information given under
the output section. The test is done in a wind tunnel with a
cross section of 305x305mm, the DC/DC converter vertically
mounted on a 8 layer PCB with a size of 254x254mm. Each
layer with 35 m (1oz) copper. Proper cooling can be verified
by measuring the temperature of selected devices. Peak
temperature can occur at position P1 and P2. The temperature
at these positions should not exceed the recommended max
values.
Calculation of ambient temperature
Byusingthethermalresistancethemaximumallowed
ambienttemperaturecanbecalculated.
1.Thepowerlossiscalculatedbyusingtheformula
((1/η)-1)×outputpower=powerlosses.
η=efficiencyofconverter.E.g89%=0.89
2.Findthevalueofthethermalresistanceforeachproductin
thediagrambyusingtheairflowspeedattheoutputsection
oftheconverter.Takethethermalresistancexpowerlossto
getthetemperatureincrease.
3.Maxallowedcalculatedambienttemperatureis:Max
TPCBofDC/DCconverter–temperatureincrease.
B.10.2W×5.1°C/W=52°C
C.125°C-52°C=maxambienttemperatureis73°C
Therealtemperaturewillbedependentonseveralfactors,
likePCBsizeandtype,directionofairflow,airturbulence
etc.Itisrecommendedtoverifythetemperaturebytesting.
A.(()-1)×82.5W=10.2W
1
0.89
E.gPKJ4810EPIat1m/s:
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PKJ4115EPI 功能描述:DC/DC轉(zhuǎn)換器 15 Vdc 6.7A Iso Input 48V 100W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PKJ4119BPIT 功能描述:DC/DC轉(zhuǎn)換器 2.5 Vdc 40A Iso Input 36-75V 100W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PKJ4216N PIM 制造商:Ericsson 功能描述:
PKJ4216NPI 功能描述:DC/DC轉(zhuǎn)換器 30Vdc 8.3A Isolated Input 36 -75V 250W RoHS:否 制造商:Murata 產(chǎn)品: 輸出功率: 輸入電壓范圍:3.6 V to 5.5 V 輸入電壓（標(biāo)稱）: 輸出端數(shù)量:1 輸出電壓（通道 1）:3.3 V 輸出電流（通道 1）:600 mA 輸出電壓（通道 2）: 輸出電流（通道 2）: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體尺寸:
PKJ4216NPIM 制造商:Ericsson 功能描述:30V, 8.3A / 250W - Bulk
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