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

4.3 OS Idle 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) 39 59.8 78 100.8
Heatsink (°C) 32.6 53.3 69.8 85.6 102.2
Heatsink + Fan (°C) 31 49.6 66.3 81.8 99.6
OSIDLE-NOM-TjVTa.pngFigure 1. OS Idle - OPP_NOM (Junction Temp vs Ambient Temp)
Thermal Management Ta (°C)
25 45 60 75 90
No Heatsink (mW) 2319.1 2776.4 3427.2 4744
Heatsink (mW) 2212 2621.4 3124.9 3811.9 4877.3
Heatsink + Fan (mW) 2208.1 2518 2978.5 3641.7 4703.1
OSIDLE-NOM-PoVTa.pngFigure 2. OS Idle - OPP_NOM (Power Consumption vs Ambient Temp)