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SAMA7G5 Series Power Consumption and Thermal Considerations AN4797
Scope
Reference Documents
1 Introduction
2 Basic Thermal Concepts
2.1 Junction Temperature
2.2 Thermal Equations
2.3 Junction-to-Air Thermal Resistance
2.4 Total Power Dissipation
3 SAMA7G54 Evaluation Kit Measurements
3.1 Use Case 1: Linux Idle
3.2 Use Case 2: iPerf Test
4 Application-Specific Use Cases
4.1 Board-Specific Junction-to-Air Thermal Resistance
4.2 Junction Temperature as a Function of the Use Case
4.3 Junction Temperature Response Time
5 SAMA7G5 Series System-in-Package (SiP) Measurement Results
5.1 Power and Thermal Measurements
5.2 Thermal Resistance Measurements
6 Hardware and Software Recommendations for High Temperature Applications
6.1 Software Recommendations
6.2 Hardware Recommendations
7 Appendix A: Linux-Specific Information
7.1 CPU Frequency Scaling Framework
7.2 Thermal Management Framework
8 Revision History
8.1 Rev. B - 10/2023
8.2 Rev. A - 10/2022
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