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參數(shù)資料
| 型號(hào)： | MPC8560VTAQJC |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 32-BIT, 1000 MHz, RISC PROCESSOR, PBGA783 |
| 封裝： | 29 X 29 MM, 3.75 MM HEIGHT, 1 MM PITCH, LEAD FREE, FLIP CHIP, PLASTIC, BGA-783 |
| 文件頁(yè)數(shù)： | 94/108頁(yè) |
| 文件大?。?/td> | 1379K |
| 代理商： | MPC8560VTAQJC |
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MPC8560 Integrated Processor Hardware Specifications, Rev. 4
86
Freescale Semiconductor
Thermal
Figure 52. Package with Heat Sink Mounted to a Printed-Circuit Board
The heat sink removes most of the heat from the device. Heat generated on the active side of the chip is
conducted through the silicon and through the lid, then through the heat sink attach material (or thermal
interface material), and finally to the heat sink. The junction-to-case thermal resistance is low enough that
the heat sink attach material and heat sink thermal resistance are the dominant terms.
16.2.3 Thermal Interface Materials
A thermal interface material is required at the package-to-heat sink interface to minimize the thermal
contact resistance. For those applications where the heat sink is attached by spring clip mechanism,
Figure 53 shows the thermal performance of three thin-sheet thermal-interface materials (silicone,
graphite/oil, floroether oil), a bare joint, and a joint with thermal grease as a function of contact pressure.
As shown, the performance of these thermal interface materials improves with increasing contact pressure.
The use of thermal grease significantly reduces the interface thermal resistance. The bare joint results in a
thermal resistance approximately six times greater than the thermal grease joint.
Heat sinks are attached to the package by means of a spring clip to holes in the printed-circuit board (see
Figure 50). Therefore, the synthetic grease offers the best thermal performance, especially at the low
interface pressure.
When removing the heat sink for re-work, it is preferable to slide the heat sink off slowly until the thermal
interface material loses its grip. If the support fixture around the package prevents sliding off the heat sink,
the heat sink should be slowly removed. Heating the heat sink to 40-50C with an air gun can soften the
interface material and make the removal easier. The use of an adhesive for heat sink attach is not
recommended.
External Resistance
Internal Resistance
Radiation
Convection
Radiation
Convection
Heat Sink
Printed-Circuit Board
Thermal Interface Material
Package/Leads
Die Junction
Die/Package
(Note the internal versus external package resistance)
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| MPC8567EPXAQGG | 功能描述:微處理器 - MPU 8567 PB Encrypt 1GHz RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
| MPC8567EPXAUJJ | 功能描述:微處理器 - MPU 8567 PB Encrypt 1.3GHz RoHS:否 制造商:Atmel 處理器系列:SAMA5D31 核心:ARM Cortex A5 數(shù)據(jù)總線寬度:32 bit 最大時(shí)鐘頻率:536 MHz 程序存儲(chǔ)器大小:32 KB 數(shù)據(jù) RAM 大小:128 KB 接口類型:CAN, Ethernet, LIN, SPI,TWI, UART, USB 工作電源電壓:1.8 V to 3.3 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:FBGA-324 |
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