IBM25PPC750FL-GR0133T IBM MICROELECTRONICS, IBM25PPC750FL-GR0133T Datasheet - Page 57

• Manufacturer Part Number: IBM25PPC750FL-GR0133T
• Description: MPU 750xx RISC 32-Bit 0.13um 600MHz 1.8V/2.5V/3.3V 750-Pin CBGA Tray
• Manufacturer: IBM MICROELECTRONICS

Specifications of IBM25PPC750FL-GR0133T

• Package: 750CBGA
• Device Core: PowerPC
• Family Name: 750xx
• Number Of Cpu Cores: 1
• Data Bus Width: 32 Bit
• Maximum Speed: 600 MHz
• I/o Voltage: 1.8|2.5|3.3 V
• Operating Temperature: -40 to 105 °C

Preliminary
5.8.1 Heat Sink Selection Example
For preliminary heat sink sizing, the die junction temperature can be expressed as follows:
Where:
Typical die junction temperatures (T
Thermal Characteristics on page 17. The temperature of the air cooling the component greatly depends upon
the ambient inlet air temperature and the air temperature rise within the computer cabinet. An electronic
cabinet inlet air temperature (T
the range of 5 − 10°C. The thermal resistance of the interface material (θ
Assuming a T
the following expression for T
For a Thermalloy heat sink #2328B, the heat sink-to-ambient thermal resistance (θ
is shown in Figure 5-8 on page 58.
750flds60.fm.6.0
April 27, 2007
T
T
T
T
θ
θ
θ
P
Die junction temperature: T
A
JC
INT
SA
J
J
R
D
= T
is the die junction temperature
is the inlet cabinet ambient temperature
is the air temperature rise within the system cabinet
is the power dissipated by the device
is the junction-to-case thermal resistance
is the heat sink-to-ambient thermal resistance
is the thermal resistance of the thermal interface material
A
+ T
A
R
of 30°C, a T
+ (θ
JC
+ θ
INT
R
+ θ
of 5°C, a CBGA package θ
J
A
SA
is obtained.
) can range 30 − 40°C. The air temperature rise within a cabinet (T
J
) × P
= 30°C + 5°C + (0.03°C/W + 1.0°C/W + θ
J
) must be maintained less than the value specified in Table 3-3 Package
D
JC
= 0.03, and a power dissipation (P
PowerPC 750FL RISC Microprocessor
INT
) is typically approximately 1°C/W.
SA
) × 5 W
SA
) versus air flow velocity
System Design Information
D
) of 5.0 Watts,
Page 57 of 65
R
) can be in