background image

Intel® Core™ 2 Duo Mobile Processors on 45-nm process for Embedded Applications

June 2008

TDG

Order Number: 320028-001

6

Introduction—Core™ 2 Duo Mobile Processors

1.0

Introduction

The power dissipation of electronic components has risen along with the increase in complexity of 

computer systems. To ensure quality, reliability, and performance goals are met over the product’s life 

cycle, the heat generated by the device must be properly dissipated. Typical methods to improve heat 

dissipation include selective use of airflow ducting, and/or the use of heatsinks.

The goals of this document are to:

• Identify the thermal and mechanical specification for the device.
• Describe a reference thermal solution that meets the specifications.

A properly designed thermal solution will adequately cool the device at or below the thermal 

specification. This is accomplished by providing a suitable local-ambient temperature, ensuring 

adequate local airflow, and minimizing the die to local-ambient thermal resistance. Operation outside 

the functional limits can degrade system performance and may cause permanent changes in the 

operating characteristics of the component.

This document describes thermal design guidelines for the Intel® Core™ 2 Duo Mobile Processors on 

45-nm process for Embedded Applications in the micro Flip Chip Pin Grid Array (micro-FCPGA) 

package and the micro Flip Chip Ball Grid Array (micro-FCBGA) package. The information provided in 

this document is for reference only and additional validation must be performed prior to implementing 

the designs into final production. The intent of this document is to assist each original equipment 

manufacturer (OEM) with the development of thermal solutions for their individual designs. The final 

heatsink solution, including the heatsink, attachment method, and thermal interface material (TIM) 

must comply with the mechanical design, environmental, and reliability requirements delineated in 

the processor datasheetIt is the responsibility of each OEM to validate the thermal solution design 

with their specific applications.

This document addresses thermal and mechanical design specifications for the Intel Core 2 Duo 

processor only. For thermal design information on other Intel components, refer to the respective 

component datasheets.

1.1

Design Flow

Several tools are available from Intel to assist with the development of a reliable, cost-effective 

thermal solution. 

Figure 1

 illustrates a typical thermal solution design process with available tools 

noted. The tools are available through your local Intel field sales representative.

Summary of Contents for CORE 2 DUO MOBILE - THERMAL DESIGN GUIDE 6-2008

Page 1: ...Order Number 320028 001 Intel Core 2 Duo Mobile Processors on 45 nm process for Embedded Applications Thermal Design Guide June 2008...

Page 2: ...g from future changes to them The Intel Core 2 Duo Mobile Processors on 45 nm process for Embedded Applications may contain design defects or errors known as errata which may cause the product to devi...

Page 3: ...lution Characterization 15 5 1 1 Calculating the Required Thermal Performance for the Intel Core 2 Duo processor 16 6 0 Reference Thermal Solutions 18 6 1 ATCA Reference Thermal Solution 18 6 2 Keep O...

Page 4: ...ction 23 13 Measuring TLA with an Active Heatsink 26 14 Measuring TLA with a Passive Heatsink 27 15 AdvancedTCA Reference Heatsink PCB Keep Out Zone Requirements Sheet 1 of 2 31 16 AdvancedTCA Referen...

Page 5: ...bile Processors Tables Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 5 Order Number 320028 001 Revision History Date Revision Description June 2008 1 0 First P...

Page 6: ...sign guidelines for the Intel Core 2 Duo Mobile Processors on 45 nm process for Embedded Applications in the micro Flip Chip Pin Grid Array micro FCPGA package and the micro Flip Chip Ball Grid Array...

Page 7: ...Junction to ambient thermal characterization parameter A measure of heatsink thermal performance using the total package power Defined as T JUNCTION TLA Total Package Power TIM Thermal interface mater...

Page 8: ...l model user s guide to aid system designers in simulating analyzing and optimizing thermal solutions in an integrated system level environment The models are for use with commercially available Compu...

Page 9: ...terials Doing so may short the capacitors and possibly damage the device or render it inactive The processor package has mechanical load limits that are specified in the processor datasheet These load...

Page 10: ...mal solution is also minimal so Intel requires the use of a heatsink for all usage conditions 3 2 Maximum Allowed Component Temperature The device must maintain a maximum temperature at or below the v...

Page 11: ...e TIM specified for thermal solutions mentioned later die pressure should not be lower than approximately 138 kPa 20 psi This will keep TIM resistance better than approximately 0 30 o C cm2 W 4 2 Pack...

Page 12: ...45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 12 Mechanical Specifications Core 2 Duo Mobile Processors Notes 1 Dimension in millimeters inches Figure 2 Primary Side K...

Page 13: ...ical Specifications Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 13 Order Number 320028 001 Notes 1 Dimension in millimeters inches Figure 3 Primary Side Keep...

Page 14: ...rs on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 14 Mechanical Specifications Core 2 Duo Mobile Processors Notes 1 Dimension in millimeters inches Figure 4 Secondary...

Page 15: ...s dissipated through the package socket motherboard stack to the environment and should not be considered to be a means of thermal control The junction to local ambient thermal characterization parame...

Page 16: ...sume TDP 35 W and TJUNCTION 105 C Local processor ambient temperature TA 40 C Using Equation 1 the maximum allowable resistance junction to ambient is calculated as To determine the required heatsink...

Page 17: ...w rate Table 3 summarizes the thermal budget required to adequately cool the Intel Core 2 Duo Mobile Processors on 45 nm process Since the data is based on air data at sea level a correction factor wo...

Page 18: ...the reference thermal solutions The heatsinks were tested as an assembly with a thermal test vehicle TTV TIM socket and test board The test assembly is placed in a rectangular duct with no upstream o...

Page 19: ...n all copper C1100 design The performance of this heatsink has been tested at flow rates from 10 CFM to 30 CFM The heatsink is expected to meet the thermal performance needed when the air flow rate is...

Page 20: ...ritical for board designers to allocate space for the heatsink 6 4 2 Thermal Performance The 1U reference heatsink employs a thick copper C1100 base with aluminum Al 1050 stamped fins soldered to the...

Page 21: ...e maximum heatsink height is constrained to 8 7 mm The heatsink uses the fastener assembly refer to Section 6 6 to mount to the PCB Detailed drawings of this heatsink are provided in Appendix B Mechan...

Page 22: ...h all of the keep out zone requirements described in this document and should not degrade the thermal performance of the reference heatsinks Finally the fastener assembly should be designed to meet th...

Page 23: ...TIM could be replaced during standard maintenance cycles The reference thermal solution uses Shin Etsu G751 Alternative materials can be used at the user s discretion Regardless the entire heatsink a...

Page 24: ...or datasheet for more information on the DTS The legacy on board thermal diode is not recommended for performing heatsink validation The thermal diode is suitable for long term trending data but is no...

Page 25: ...eyond the edge of the thermal solution Typical distance from the motherboard to the barrier is 81 mm 3 2 in If a barrier is used the thermocouple can be taped directly to the barrier with clear tape a...

Page 26: ...ile Processors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 26 Thermal Metrology Core 2 Duo Mobile Processors Note Drawing not to scale Figure 13 Measuring TLA with...

Page 27: ...Processors Thermal Metrology Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 27 Order Number 320028 001 Note Drawing not to scale Figure 14 Measuring TLA with a...

Page 28: ...ability Requirements Test1 Requirement Pass Fail Criteria2 Mechanical Shock 50 g board level 11 msec 3 shocks axis Visual Check and Electrical Functional Test Random Vibration 7 3 g board level 45 min...

Page 29: ...nctionality or compatibility of these devices This list and or these devices may be subject to change without notice Note The enabled components may not be currently available from all suppliers Conta...

Page 30: ...sink PCB Keep Out Zone Requirements Sheet 2 of 2 Figure 16 AdvancedTCA Reference Heatsink Assembly Figure 17 AdvancedTCA Reference Heatsink Figure 18 CompactPCI Reference Heatsink PCB Keep Out Zone Re...

Page 31: ...sors Mechanical Drawings Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 31 Order Number 320028 001 Figure 15 AdvancedTCA Reference Heatsink PCB Keep Out Zone Re...

Page 32: ...ocessors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 32 Mechanical Drawings Core 2 Duo Mobile Processors Figure 16 AdvancedTCA Reference Heatsink PCB Keep Out Zone...

Page 33: ...Duo Mobile Processors Mechanical Drawings Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 33 Order Number 320028 001 Figure 17 AdvancedTCA Reference Heatsink As...

Page 34: ...l Core 2 Duo Mobile Processors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 34 Mechanical Drawings Core 2 Duo Mobile Processors Figure 18 AdvancedTCA Reference Heat...

Page 35: ...ssors Mechanical Drawings Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 35 Order Number 320028 001 Figure 19 CompactPCI Reference Heatsink PCB Keep Out Zone Re...

Page 36: ...ocessors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 36 Mechanical Drawings Core 2 Duo Mobile Processors Figure 20 CompactPCI Reference Heatsink PCB Keep Out Zone...

Page 37: ...Duo Mobile Processors Mechanical Drawings Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 37 Order Number 320028 001 Figure 21 CompactPCI Reference Heatsink Ass...

Page 38: ...l Core 2 Duo Mobile Processors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 38 Mechanical Drawings Core 2 Duo Mobile Processors Figure 22 CompactPCI Reference Heats...

Page 39: ...Processors Mechanical Drawings Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 39 Order Number 320028 001 Figure 23 1U Reference Heatsink PCB Keep Out Requireme...

Page 40: ...bile Processors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 40 Mechanical Drawings Core 2 Duo Mobile Processors Figure 24 1U Reference Heatsink PCB Keep Out Requir...

Page 41: ...re 2 Duo Mobile Processors Mechanical Drawings Intel Core 2 Duo Mobile Processors on 45 nm process Thermal Design Guide TDG June 2008 41 Order Number 320028 001 Figure 25 1U Reference Heatsink Assembl...

Page 42: ...Intel Core 2 Duo Mobile Processors on 45 nm process for Embedded Applications June 2008 TDG Order Number 320028 001 42 Mechanical Drawings Core 2 Duo Mobile Processors Figure 26 1U Reference Heatsink...

Reviews: