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參數(shù)資料
| 型號(hào)： | Embedded Pentium Processor |
| 廠商： | Intel Corp. |
| 英文描述： | 32 Bit Embedded Pentium Processor with Voltage Reduction Technology(32位嵌入式帶壓降技術(shù)奔騰處理器) |
| 中文描述： | 32位嵌入式電壓還原技術(shù)奔騰處理器（32位嵌入式帶壓降技術(shù)奔騰處理器） |
| 文件頁(yè)數(shù)： | 27/44頁(yè) |
| 文件大?。?/td> | 826K |
| 代理商： | EMBEDDED PENTIUM PROCESSOR |
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Embedded Pentium
Processor with Voltage Reduction Technology
Datasheet
27
3.4.2
Thermal Equations
For the embedded Pentium processor with voltage reduction technology, an ambient temperature,
T
A
(air temperature around the processor), is not specified directly. The only requirement 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 11)
Table 12 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
Table 12. Thermal Resistances for Embedded Pentium
Processors
with Voltage Reduction Technology
Heatsink Height in
Inches
θ
JC
(°C/Watt)
θ
CA
(°C/Watt) vs. Laminar Airflow (Linear ft/min)
0
100
200
400
600
800
0.25
1.25
9.4
8.3
6.9
4.7
3.9
3.3
0.35
1.25
9.1
7.8
6.3
4.3
3.6
3.1
0.45
1.25
8.7
7.3
5.6
3.9
3.2
2.8
0.55
1.25
8.4
6.8
5.0
3.5
2.9
2.6
0.65
1.25
8.0
6.3
4.6
3.3
2.7
2.4
0.80
1.25
7.3
5.6
4.2
2.9
2.5
2.3
1.00
1.25
6.6
4.9
3.9
2.9
2.4
2.1
1.20
1.25
6.2
4.6
3.6
2.7
2.3
2.1
1.40
1.25
5.7
4.2
3.3
2.5
2.2
2.0
Without Heatsink
1.7
14.5
13.8
12.6
10.5
8.6
7.5
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