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

4.5 Dhrystone 2 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) 50.5 73.3 93.4
Heatsink (°C) 38.2 58.4 75 91.8 111.4
Heatsink + Fan (°C) 35.3 54.8 71.5 88 105.8
DHY2-NOM-TjVTa.pngFigure 5. Dyrystone (Core 1 and Core 2) at OPP_NOM (Junction Temp vs Ambient Temp)
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (mW) 4111.4 4869.1 5966
Heatsink (mW) 3852.5 4303.7 4916.3 5819.6 7247.3
Heatsink + Fan (mW) 3849.7 4276.2 4825.1 5592.9 6827.6
DHY2-NOM-PoVTa.pngFigure 6. Dyrystone (Core 1 & Core 2) at OPP_NOM (Power Consumption vs Ambient Temp)