參數(shù)資料
型號(hào)： MPC755CRX400
廠商： FREESCALE SEMICONDUCTOR INC
元件分類： 微控制器/微處理器
英文描述： 32-BIT, 400 MHz, RISC PROCESSOR, CBGA360
封裝： 25 X 25 MM, 3.20 MM HEIGHT, 1.27 MM PITCH, CERAMIC, BGA-360
文件頁(yè)數(shù)： 43/56頁(yè)
文件大?。?/td> 1521K
代理商： MPC755CRX400
MPC755 RISC Microprocessor Hardware Specifications, Rev. 8
48
Freescale Semiconductor
System Design Information
Shin-Etsu MicroSi, Inc.
888-642-7674
10028 S. 51st St.
Phoenix, AZ 85044
Internet: www.microsi.com
Thermagon Inc.
888-246-9050
4707 Detroit Ave.
Cleveland, OH 44102
Internet: www.thermagon.com
8.8.3
Heat Sink Selection Example
This section provides a heat sink selection example using one of the commercially-available heat sinks.
For preliminary heat sink sizing, the die-junction temperature can be expressed as follows:
Tj = Ta + Tr + (θjc + θint + θsa) × Pd
where:
Tj is the die-junction temperature
Ta is the inlet cabinet ambient temperature
Tr is the air temperature rise within the computer cabinet
θ
jc is the junction-to-case thermal resistance
θ
int is the adhesive or interface material thermal resistance
θ
sa is the heat sink base-to-ambient thermal resistance
Pd is the power dissipated by the device
During operation the die-junction temperatures (Tj) should be maintained less than the value specified in
Table 3. The temperature of air cooling the component greatly depends on the ambient inlet air temperature
and the air temperature rise within the electronic cabinet. An electronic cabinet inlet-air temperature (Ta)
may range from 30° to 40°C. The air temperature rise within a cabinet (Tr) may be in the range of 5° to
10°C. The thermal resistance of the thermal interface material (
θ
int) is typically about 1°C/W. Assuming
a Ta of 30°C, a Tr of 5°C, a CBGA package Rθjc < 0.1, and a power consumption (Pd) of 5.0 W, the
following expression for Tj is obtained:
Die-junction temperature:
Tj = 30°C + 5°C + (0.1°C/W + 1.0°C/W + θsa) × 5.0 W
For a Thermalloy heat sink #2328B, the heat sink-to-ambient thermal resistance (
θ
sa) versus airflow
velocity is shown in Figure 28.
Assuming an air velocity of 0.5 m/s, we have an effective Rsa of 7°C/W, thus
Tj = 30°C + 5°C + (0.1°C/W + 1.0°C/W + 7°C/W) × 5.0 W,
resulting in a die-junction temperature of approximately 76°C which is well within the maximum
operating temperature of the component.
Other heat sinks offered by Aavid Thermalloy, Alpha Novatech, The Bergquist Company, IERC, Chip
Coolers, and Wakefield Engineering offer different heat sink-to-ambient thermal resistances, and may or
may not need airflow.
相關(guān)PDF資料
PDF描述
MPC745BPX300 32-BIT, 300 MHz, RISC PROCESSOR, PBGA255
MPC755CVT400 32-BIT, 400 MHz, RISC PROCESSOR, PBGA360
MPC755BPX350 32-BIT, 350 MHz, RISC PROCESSOR, PBGA360
MPC755CRX400LE 32-BIT, 400 MHz, RISC PROCESSOR, CBGA360
MPC755CPX400LER2 32-BIT, 400 MHz, RISC PROCESSOR, PBGA360
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MPC755CRX400LE 功能描述:微處理器 - MPU GF RV2.84A105C 360CBGA 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
MPC755CRX400TE 功能描述:微處理器 - MPU GF RV2.84A-40C 360CBGA 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
MPC755CVT350LE 功能描述:微處理器 - MPU GF RV2.8,4A,105C,6W 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
MPC755CVT400LE 功能描述:微處理器 - MPU GF RV2.84A105C 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
MPC76 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Metal Plate Cement Resistors
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*