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| 型号： | IBM25PPC750FX-GB0112T |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 32-BIT, 600 MHz, RISC PROCESSOR, CBGA292 |
| 封装： | 21 X 21 MM, 1 MM PITCH, CERAMIC, BGA-292 |
| 文件页数： | 49/62页 |
| 文件大小： | 452K |
| 代理商： | IBM25PPC750FX-GB0112T |
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DD 2.X
Preliminary
PowerPC 750FX RISC Microprocessor
Body_750FX_DS_DD2.X.fm.2.0
June 9, 2003
5. System Design Information
Page 51 of 63
Assuming an air velocity of 0.5m/s, we have an effective
θ
SA of 7
°C/W, thus
T
J = 30
°C + 5°C + (2.2°C/W +1.0°C/W + 7°C/W) × 4.5W,
resulting in a junction temperature of approximately 81
°C which is well within the maximum operating
temperature of the component.
Other heat sinks offered by Chip Coolers, IERC, Thermalloy, Aavid, and Wakefield Engineering offer different
heat sink-to-ambient thermal resistances, and may or may not need air flow.
Though the junction-to-ambient and the heat sink-to-ambient thermal resistances are a common
figure-of-merit used for comparing the thermal performance of various microelectronic packaging technolo-
gies, one should exercise caution when only using this metric in determining thermal management because
no single parameter can adequately describe three-dimensional heat flow. The final chip-junction operating
temperature is not only a function of the component-level thermal resistance, but the system-level design and
its operating conditions. In addition to the component's power dissipation, a number of factors affect the final
operating die-junction temperature. These factors might include air flow, board population (local heat flux of
adjacent components), heat sink efficiency, heat sink attach, next-level interconnect technology, system air
temperature rise, and so forth.
Figure 5-8. Thermalloy #2328B Pin-Fin Heat Sink-to-Ambient Thermal Resistance vs. Airow Velocity
Approach Air Velocity (m/s)
Heat
Sink
Ther
mal
Resistance
(
×°
C/W)
1
2
3
4
5
6
7
8
0
0.5
1
1.5
2
2.5
3
3.5
Thermalloy #2328B Pin-n Heat Sink
(25 x 28 x 15 mm)
相关PDF资料 |
PDF描述 |
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| IBM25PPC750FX-DB0513T | 32-BIT, 700 MHz, RISC PROCESSOR, CBGA292 |
| IBM25PPC750FX-FB0533T | 32-BIT, 700 MHz, RISC PROCESSOR, CBGA292 |
| IBM25PPC750FX-FB0112T | 32-BIT, 600 MHz, RISC PROCESSOR, CBGA292 |
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| IBM25PPC750FX-EB0122T | 32-BIT, 600 MHz, RISC PROCESSOR, CBGA292 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| IBM25PPC750FX-GB0122V | 制造商:IBM 功能描述:MPU 750XX RISC 32BIT - Trays |
| IBM25PPC750FX-GB0132T | 制造商:IC'S/TRANSISTORS/DIO 功能描述: 制造商:IC'S/TRANSISTORS/DIODES 功能描述: |
| IBM25PPC750FX-GB0132V | 制造商:IBM 功能描述:MPU 750XX RISC 32BIT - Trays |
| IBM25PPC750FX-GB0133V | 制造商:IBM 功能描述:MPU 750XX RISC 32BIT - Trays |
| IBM25PPC750FX-GB0532V | 制造商:IBM 功能描述:MPU 750XX RISC 32BIT - Trays |
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