Thermal Design User Guide: MAX® 10 FPGA B610 Package

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ID 851247
Date 5/20/2025
Public
Document Table of Contents
Document Table of Contents x
1. Introduction to MAX® 10 FPGA B610 Package Thermal Design Guidelines 2. MAX® 10 FPGA B610 Package Mechanical Construction 3. MAX® 10 FPGA B610 Package CTM Construction 4. Quartus Requirements and Power Estimation 5. General FPGA Thermal Design Considerations 6. Thermal Design Process 7. Thermal Solution Mechanical Design 8. Vendor References 9. Document Revision History for the MAX® 10 FPGA B610 Package Thermal Design User Guide A. Thermal Design Elements
1. Introduction to MAX® 10 FPGA B610 Package Thermal Design Guidelines x
1.1. Thermal Design Requirements 1.2. Definitions of Thermal and Power Terms Used in this Document
2. MAX® 10 FPGA B610 Package Mechanical Construction x
2.1. Thermal Design Process Flow 2.2. Thermal Resistance Values Summary
3. MAX® 10 FPGA B610 Package CTM Construction x
3.1. CTM File Format 3.2. Thermal Modeling with the CTM 3.3. Obtaining the CTM
4. Quartus Requirements and Power Estimation x
4.1. Board Thermal Model 4.2. QPA Outputs
5. General FPGA Thermal Design Considerations x
5.1. FPGA Power Considerations 5.2. FPGA Maximum Allowed Power Dissipation 5.3. Static, Dynamic, and Standby Power
6. Thermal Design Process x
6.1. Package Heat Flow Path 6.2. Recommended Thermal Design Methodology
7. Thermal Solution Mechanical Design x
7.1. Mechanical Design 7.2. TIM2 Selection 7.3. Summary
7.1. Mechanical Design x
7.1.1. Bond Line Thickness (BLT) 7.1.2. Die Warpage 7.1.3. Package Loading 7.1.4. Recommended Pressure Variation Across the Package
7.2. TIM2 Selection x
7.2.1. Gap Pad TIMs 7.2.2. Gap Pad TIM Thermal Conductivity Data 7.2.3. Parametric Studies with Different TIM Materials
1. Introduction to MAX® 10 FPGA B610 Package Thermal Design Guidelines
2. MAX® 10 FPGA B610 Package Mechanical Construction
3. MAX® 10 FPGA B610 Package CTM Construction
4. Quartus Requirements and Power Estimation
5. General FPGA Thermal Design Considerations
6. Thermal Design Process
7. Thermal Solution Mechanical Design
8. Vendor References
9. Document Revision History for the MAX® 10 FPGA B610 Package Thermal Design User Guide
A. Thermal Design Elements

7.1.4. Recommended Pressure Variation Across the Package

Altera has characterized various thermal interface materials (TIMs) of gap pads using an in-house TIM tester, and obtained curves of resistance vs. pressure. These tests were conducted for various TIMs across different pressure ranges.

As shown below, the measured curves for initial gap pad thicknesses in the range of 0.8 to 1.2 mm reveal that performance varies based on material composition and manufacturer. These are provided as a best guide for typical low-power FPGA applications. However, the appropriate gap pad thickness and TIM type can be selected based on the gap between the package and heatsink requirements.

As discussed in the previous section, package load limits, die warpage, and thermal solution tolerance cause the attached pressure to vary.

The contact pressure must be maintained in the typical range of 10 to 40 psi. This ensures that it meets both thermal and mechanical loading specification requirements.

Figure 9. Low Power Applications: GAP PAD TIM Resistance Pressure Map Curves Obtained from TIM Test Vehicle

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