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

4.6 Dhrystone 1 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) 54.2 81.2
Heatsink (°C) 38.6 60.6 77.5 96
Heatsink + Fan (°C) 36.4 57.7 73.9 91.3
DHY1-HIGH-TjVTa.pngFigure 7. Dyrystone (Core 1) at OPP_HIGH (Junction Temp vs Ambient Temp)
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (mW) 4949.6 6362
Heatsink (mW) 4397.9 5151.9 6007.6 7521
Heatsink + Fan (mW) 4361.2 5041.5 5803.9 7063.7
DHY1-HIGH-PoVTa.pngFigure 8. Dyrystone (Core 1) at OPP_HIGH (Power Consumption vs Ambient Temp)