参数资料
型号: MPC8245LZU266D
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 32-BIT, 266 MHz, RISC PROCESSOR, PBGA352
封装: 35 X 35 MM, 1.27 MM PITCH, TBGA-352
文件页数: 46/64页
文件大小: 893K
代理商: MPC8245LZU266D
50
MPC8245 Integrated Processor Hardware Specifications
MOTOROLA
System Design Information
1.7.8
Thermal Management Information
This section provides thermal management information for the tape ball grid array (TBGA) package for
air-cooled applications. Depending on the application environment and the operating frequency, heat sinks
may be required to maintain junction temperature within specifications. Proper thermal control design is
primarily dependent upon the system-level design: the heat sink, airflow, and thermal interface material. To
reduce the die-junction temperature, heat sinks may be attached to the package by several methods:
adhesive, spring clip to holes in the printed-circuit board or package, or mounting clip and screw assembly.
Figure 29 displays a package-exploded cross-sectional view of a TBGA package with several heat sink
options.
Figure 29. Package-Exploded Cross-Sectional View with Several Heat Sink Options
Figure 30 depicts the die junction-to-ambient thermal resistance for four typical cases:
A heat sink is not attached to the TBGA package, and there exists high board-level thermal loading
from adjacent components.
A heat sink is not attached to the TBGA package, and there exists low board-level thermal loading
from adjacent components.
A heat sink (for example, ChipCoolers) is attached to the TBGA package, and there exists high
board-level thermal loading from adjacent components.
A heat sink (for example, ChipCoolers) is attached to the TBGA package, and there exists low
board-level thermal loading from adjacent components.
Thermal Interface
Heat Sink
TBGA Package
Heat Sink
Clip
Printed-Circuit Board
Option
Material
Die
Adhesive or
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