參數(shù)資料
型號: PMC4318TWSN
廠商: ERICSSON POWER MODULES AB
元件分類: 電源模塊
英文描述: 1-OUTPUT 33 W DC-DC REG PWR SUPPLY MODULE
封裝: ROHS COMPLIANT, PACKAGE-6
文件頁數(shù): 21/31頁
文件大?。?/td> 1603K
代理商: PMC4318TWSN
EN/LZT146056R4A EricssonPowerModules,March2007
PMC4318TWSDatasheet
Thermal Considerations
General
ThePMC4000SeriesDC/DCregulatorsaredesigned
tooperateinavarietyofthermalenvironments,however
sufficientcoolingshouldbeprovidedtohelpensurereliable
operation.Heatisremovedbyconduction,convectionand
radiationtothesurroundingenvironment.Increasedairflow
enhancestheheattransferviaconvection.
Propercoolingcanbeverifiedbymeasuringthe
temperatureatthereferencepoint(Tref).
Calculation of ambient temperature
Byusingthethermalresistancethemaximumallowed
ambienttemperaturecanbecalculated.
A.Thepowerlossiscalculatedbyusingtheformula
((1/
η)-1)×outputpower=powerlosses.
η=efficiencyofregulator.Example:95%=0.95
B.FindthevalueofthethermalresistanceRthTref-Ainthedia-
grambyusingtheairflowspeedatthemodule.Takethether-
malresistance×powerlosstogetthetemperatureincrease.
Thermalresistancevs.airspeedmeasuredattheregulator.
C.Maxallowedcalculatedambienttemperatureis:
MaxTrefofDC/DCregulator-temperatureincrease.
Example:1.8Voutputat1m/s,fullload,3.3Vin:
B.1.67W×9°C/W=15°C
C.115°C-15°C=maxambienttemperatureis100°C
Therealtemperaturewillbedependentonseveralfactors,
likePCBsizeandtype,directionofairflow,airturbulence
etc.Itisrecommendedtoverifythetemperaturebytesting.
A.((1/0.915)-1)×18W=1.67W
Tref
ThePMC4000thermaltestingisperformedwiththe
productmountedonanFR4board254× 254 mm with 8
× 254 mm with 8
254mmwith8
layersof
35mcopper.
AIRFLOW
(max115°C)
相關(guān)PDF資料
PDF描述
PMC4219WSN/C 1-OUTPUT 25 W DC-DC REG PWR SUPPLY MODULE
PMC4118LWS/C 1-OUTPUT 12 W DC-DC REG PWR SUPPLY MODULE
PMC4310WSN 1-OUTPUT 33 W DC-DC REG PWR SUPPLY MODULE
PMC4118HWS/C 1-OUTPUT 15 W DC-DC REG PWR SUPPLY MODULE
PMC4118NWSN/C 1-OUTPUT 10 W DC-DC REG PWR SUPPLY MODULE
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PMC4318TWSOP 制造商:Ericsson 功能描述:NON-ISOLATED, SURFACE MOUNT, REGULATORS - Tape and Reel
PMC4518TWS 功能描述:DC/DC轉(zhuǎn)換器 .75-3.6 Vdc 16A Iso Input 3.0-5.5V 53W 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:
PMC-46RX5-SC1 制造商:Omron Corporation 功能描述:
PMC-46TX5-SC1 制造商:Omron Corporation 功能描述:
PMC-48V150W1BA 制造商:Delta Power 功能描述: 制造商:Delta Electronics Inc 功能描述:AC/DC CONVERTER 48V 150W PNL MT