參數(shù)資料
型號(hào): PPC440GR-3pbfffCx
廠商: Applied Micro Circuits Corp.
英文描述: Power PC 440GR Embedded Processor
中文描述: 440GR的Power PC嵌入式處理器
文件頁(yè)數(shù): 62/82頁(yè)
文件大小: 527K
代理商: PPC440GR-3PBFFFCX
62
AMCC Proprietary
Revision 1.16 – July 19, 2006
Preliminary Data Sheet
440GR – PPC440GR Embedded Processor
Thermal Management
The following heat sinks were used in the above thermal analysis:
ALPHA W35-15W (35mm x 35mm x15mm)
ALPHA LPD35-15B (35mm x 35mm x15mm)
The heat sinks are manufactured by:
Alpha Novatech, Inc. (www.alphanovatech.com)
473 Sapena Court, #12
Santa Clara, CA 95054
Phone: 408-567-8082
Table 14. Package Thermal Specifications
Thermal resistance values for the E-PBGA package are as follows:
Parameter
Symbol
Package
Airflow
ft/min (m/sec)
Unit
Notes
0 (0)
100 (0.51)
200 (1.02)
Junction-to-ambient thermal resistance
without heat sink
θ
JA
E-PBGA
20.0
18.7
17.9
°C/W
TE-PBGA
15.6
13.6
12.8
°C/W
Junction-to-ambient thermal resistance
with heat sink
θ
JA
E-PBGA
15.3
11.9
10.5
°C/W
TE-PBGA
13.9
10.4
9.0
°C/W
Resistance Value
Junction-to-case thermal resistance
θ
JC
E-PBGA
8.3
°C/W
TE-PBGA
6.3
°C/W
Junction-to-board thermal resistance
θ
JB
E-PBGA
14.3
°C/W
TE-PBGA
9.3
°C/W
Notes:
1. Case temperature, T
C
, is measured at top center of case surface with device soldered to circuit board.
2. T
A
= T
C
- P
×θ
CA
, where T
A
is ambient temperature and P is power consumption.
3. T
CMax
=
T
JMax
- P
×θ
JC
, where T
JMax
is maximum junction temperature (+125°C) and P is power consumption.
4. The preceding equations assume that the chip is mounted on a board with at least one signal and two power planes.
5. Values in the table were achieved with a JEDEC standard board: 114.5mm x 101.6mm x 1.6mm, 4 layers.
6. Values for an attached heat sink were achieved with a 35mm x 35mm x 15mm unit (see Thermal Management below), attached with a
0.1mm thickness of adhesive having a thermal conductivity of 1.3 W/mK.
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