SPRACL7 March   2019 AM5746 , AM5748 , AM5749

 

  1.   AM574x thermal considerations
    1.     Trademarks
    2. 1 Overview
    3. 2 Important Notes
    4. 3 Test Overview
      1. 3.1 OS Idle
      2. 3.2 Dhrystone
      3. 3.3 Temperature Measurement
      4. 3.4 OPP Definitions
    5. 4 Data and Results
      1. 4.1 OPP Settings and Linux Thermal Framework
      2. 4.2 Power and Thermal Chamber Measurements
      3. 4.3 OS Idle at OPP_NOM
      4. 4.4 Dhrystone 1 Core at OPP_NOM
      5. 4.5 Dhrystone 2 Core at OPP_NOM
      6. 4.6 Dhrystone 1 Core at OPP_HIGH
      7. 4.7 Dhrystone 2 Core at OPP_HIGH
    6. 5 References

4.7 Dhrystone 2 Core at OPP_HIGH

OPP Levels
MPU GPU DSP IVA
HIGH HIGH HIGH HIGH
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (°C) 68.4 102.4
Heatsink (°C) 44.6 66.4 84.5 104.4
Heatsink + Fan (°C) 40.8 62.2 79 97.5
DHY2-HIGH-TjVTa.pngFigure 9. Dyrystone (Core 1 & Core 2) at OPP_HIGH (Junction Temp vs Ambient Temp)
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (mW) 7311.6 9999.8
Heatsink (mW) 6269.4 7156.7 8338.7 10297.3
Heatsink + Fan (mW) 6162.4 6958 7938.4 9487.3
DHY2-HIGH-PoVTa.pngFigure 10. Dyrystone (Core 1 & Core 2) at OPP_HIGH (Power Consumption vs Ambient Temp)