參數(shù)資料
型號： Embedded Pentium 133
廠商： Intel Corp.
英文描述： 32 BIT Embedded Pentium Processor(32位嵌入式奔騰處理器)
中文描述： 32位嵌入式奔騰處理器（32位嵌入式奔騰處理器）
文件頁數(shù)： 27/42頁
文件大小： 882K
代理商： EMBEDDED PENTIUM 133
Embedded Pentium
Processor
Datasheet
27
2.3.2
Thermal Equations And Data
For the Pentium processor, an ambient temperature, T
A
(air temperature around the processor), is
not specified directly. The only restriction is that the case temperature (T
C
) is met. To calculate T
A
values, use the following equations:
T
A
= T
C
– (P *
θ
CA
)
θ
CA
=
θ
JA
–
θ
JC
where:
T
A
and T
C
=
θ
CA
=
θ
JA
=
θ
JC
=
P =
ambient and case temperature (
°
C)
case-to-ambient thermal resistance (
°
C/W)
junction-to-ambient thermal resistance (
°
C/W)
junction-to-case thermal resistance (
°
C/W)
maximum power consumption in Watts (see Table 13)
Table 14 lists the
θ
CA
values for the Pentium processor with passive heatsinks.
Thermal data collection parameters:
Heatsinks are omnidirectional pin aluminum alloy
Features were based on standard extrusion practices for a given height
Pin size ranged from 50 to 129 mils
Pin spacing ranged from 93 to 175 mils
Base thickness ranged from 79 to 200 mils
Heatsink attach was 0.005" of thermal grease
Using an attach thickness of 0.002” improves performance by approximately 0.3
°
C/W
Figure 5. Technique for Measuring Case Temperature (T
C
)
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