SPRABF9 March   2019 TMS320C6742 , TMS320C6742 , TMS320C6746 , TMS320C6746 , TMS320C6748 , TMS320C6748

 

  1.   1
  2.   Trademarks
  3. 1Introduction
  4. 2Model Activity
    1. 2.1 Activity-Based Models
    2. 2.2 Baseline Power
    3. 2.3 Activity Power
    4. 2.4 Modules
  5. 3Using the Power Estimation Spreadsheet
    1. 3.1 Choosing Appropriate Values
      1. 3.1.1 Utilization
      2. 3.1.2 % Writes
      3. 3.1.3 % Switching
  6. 4Using the Results
    1. 4.1 Adjusting I/O Power Result
  7. 5Thermal Considerations
  8. 6Example
  9. 7Limitations
  10. 8References

4 Using the Results

The intent of the power estimation spreadsheet is to provide estimates of the upper bounds in an application-specific loading and peripheral utilization scenario. The measured units were selected to be a strong unit at the maximum end of power consumption for production units. No production units will have average power consumption that exceeds the spreadsheet values. Therefore, the spreadsheet data may be considered maximum average power consumption; the actual observed power may vary. That is, transient currents may cause power to spike above the spreadsheet value for a small amount of time. However, over a long period, the observed average consumption will be below the spreadsheet value. The spreadsheet value may be used for board thermal analysis and power supply design as a maximum long-term average.