參數(shù)資料
型號: MPC755BRX400LX
廠商: MOTOROLA 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
文件頁數(shù): 37/48頁
文件大?。?/td> 1265K
代理商: MPC755BRX400LX
42
MPC755 RISC Microprocessor Hardware Specifications
System Design Information
135 W. Magnolia Blvd.
Burbank, CA 91502
Thermalloy
214-243-4321
2021 W. Valley View Lane
P.O. Box 810839
Dallas, TX 75731
Wakefield Engineering
617-245-5900
60 Audubon Rd.
Wakefield, MA 01880
Aavid Engineering
603-528-3400
One Kool Path
Laconia, NH 03247-0440
Ultimately, the final selection of an appropriate heat sink depends on many factors, such as thermal
performance at a given air velocity, spatial volume, mass, attachment method, assembly, and cost.
1.8.9.1 Internal Package Conduction Resistance
For the exposed-die packaging technology, shown in Table 4, the intrinsic conduction thermal resistance
paths are as follows:
The die junction-to-case (or top-of-die for exposed silicon) thermal resistance
The die junction-to-ball thermal resistance
Figure 28 depicts the primary heat transfer path for a package with an attached heat sink mounted to a
printed-circuit board.
Figure 28. C4 Package with Heat Sink Mounted to a Printed-Circuit Board
Heat generated on the active side of the chip is conducted through the silicon, then through the heat sink
attach material (or thermal interface material), and finally to the heat sink where it is removed by forced-air
convection.
Since the silicon thermal resistance is quite small, for a first-order analysis, the temperature drop in the
silicon may be neglected. Thus, the heat sink attach material and the heat sink conduction/convective
External Resistance
Internal Resistance
(Note the internal versus external package resistance)
Radiation
Convection
Radiation
Convection
Heat Sink
Printed-Circuit Board
Thermal Interface Material
Package/Leads
Die Junction
Die/Package
相關PDF資料
PDF描述
MPC755BRX450LE 32-BIT, 450 MHz, RISC PROCESSOR, CBGA360
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