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參數(shù)資料
| 型號(hào)： | MPC5554EVBE |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 56/58頁 |
| 文件大小： | 0K |
| 描述： | BOARD EVAL FOR MPC5554 |
| 產(chǎn)品培訓(xùn)模塊： | MPC55xx PitchPak Family |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | Qorivva |
| 類型： | MCU |
| 適用于相關(guān)產(chǎn)品： | MPC5554 |
| 所含物品： | 評(píng)估板和演示軟件 |
| 配用： | MFR4310FRDC-ND - FRDC FLEXRAY DAUGHTER CARD |
| 相關(guān)產(chǎn)品： | MPC5554MZP132R2-ND - IC MCU 2M FLASH 132MHZ 416-PBGA MPC5554MZP132-ND - IC MCU 2M FLASH 132MHZ 416-PBGA MPC5554MVR132R2-ND - IC MCU 2M FLASH 132MHZ 416-PBGA MPC5554MVR132-ND - IC MCU 2M FLASH 132MHZ 416-PBGA MPC5554AZP132-ND - IC MPU 2M FLASH 132MHZ 416-PBGA |
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Electrical Characteristics
MPC5554 Microcontroller Data Sheet, Rev. 4
Freescale Semiconductor
7
At a known board temperature, the junction temperature is estimated using the following equation:
TJ = TB + (RJB PD)
where:
TJ = junction temperature (oC)
TB = board temperature at the package perimeter (oC/W)
RJB = junction-to-board thermal resistance (oC/W) per JESD51-8
PD = power dissipation in the package (W)
When the heat loss from the package case to the air does not factor into the calculation, an acceptable value
for the junction temperature is predictable. Ensure the application board is similar to the thermal test
condition, with the component soldered to a board with internal planes.
The thermal resistance is expressed as the sum of a junction-to-case thermal resistance plus a
case-to-ambient thermal resistance:
RJA = RJC + RCA
where:
RJA = junction-to-ambient thermal resistance (oC/W)
RJC = junction-to-case thermal resistance (oC/W)
RCA = case-to-ambient thermal resistance (oC/W)
RJC is device related and is not affected by other factors. The thermal environment can be controlled to
change the case-to-ambient thermal resistance, RCA. For example, change the air flow around the device,
add a heat sink, change the mounting arrangement on the printed circuit board, or change the thermal
dissipation on the printed circuit board surrounding the device. This description is most useful for
packages with heat sinks where 90% of the heat flow is through the case to heat sink to ambient.
For most packages, a better model is required.
A more accurate two-resistor thermal model can be constructed from the junction-to-board thermal
resistance and the junction-to-case thermal resistance. The junction-to-case thermal resistance describes
when using a heat sink or where a substantial amount of heat is dissipated from the top of the package. The
junction-to-board thermal resistance describes the thermal performance when most of the heat is
conducted to the printed circuit board. This model can be used to generate simple estimations and for
computational fluid dynamics (CFD) thermal models.
To determine the junction temperature of the device in the application on a prototype board, use the
thermal characterization parameter (
JT) to determine the junction temperature by measuring the
temperature at the top center of the package case using the following equation:
TJ = TT + (JT PD)
where:
TT = thermocouple temperature on top of the package (oC)
JT = thermal characterization parameter (oC/W)
PD = power dissipation in the package (W)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MPC5554EVBE | 制造商:Freescale Semiconductor 功能描述:MPC5554 CUSTOMER DEMO BD |
| MPC5554EVBGHS | 功能描述:開發(fā)軟件 GREEN HILLS SW Qorivva RoHS:否 制造商:Atollic Inc. 產(chǎn)品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| MPC5554EVBISYS | 功能描述:開發(fā)軟件 ISYSTEMS CONTENT Qorivva RoHS:否 制造商:Atollic Inc. 產(chǎn)品:Compilers/Debuggers 用于:ARM7, ARM9, Cortex-A, Cortex-M, Cortex-R Processors |
| MPC5554FS | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:Qorivva MPC5554 Family |
| MPC5554INT | 功能描述:開發(fā)板和工具包 - 其他處理器 MPC5554 CUST. DEMO Qorivva RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類型:I2C, SPI, USB 工作電源電壓: |
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