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

4.4 Dhrystone 1 Core at OPP_NOM

OPP Levels
MPU GPU DSP IVA
NOM HIGH HIGH HIGH
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (°C) 44.2 65 85.9 112
Heatsink (°C) 35.2 55.6 71.5 88.5 106.8
Heatsink + Fan (°C) 33 52.3 68.4 85.5 103.2
DHY1-NOM-TjVTa.pngFigure 3. Dyrystone (Core 1) at OPP_NOM (Junction Temp vs Ambient Temp)
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (mW) 3157.5 3707.1 4610.1 6366.7
Heatsink (mW) 3010.6 3448.8 3952.1 4778.4 6071.4
Heatsink + Fan (mW) 2974.7 3399.1 3916 4614.9 5777.2
DHY1-NOM-PoVTa.pngFigure 4. Dyrystone (Core 1) at OPP_NOM (Power Consumption vs Ambient Temp)