SPRADM7 March   2025 AWR2944 , IWR2944

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Definitions, Abbreviations, Acronyms
  5. 2Introduction
  6. 3Device Architecture Overview
  7. 4Key Power Consuming Blocks In AWR2944 Device
  8. 5Fundamental Power Optimization Strategies
  9. 6SDK-based Power Optimization methods for AWR2944 Device
    1. 6.1 Typical Radar Measurement Cycle
    2. 6.2 Power States During a Typical Radar Measurement Cycle
    3. 6.3 Power Reduction Techniques Implemented In Mililmeter Wave Demo
  10. 7Equipment Needed For Evaluation
  11. 8Summary
  12. 9References

6 SDK-based Power Optimization methods for AWR2944 Device

The power consumption of AWR294x can be reduced by some techniques. These power reduction techniques can be achieved through appropriate programming of the MSS and DSP. These techniques are designed for applications with a significant time gap between successive radar measurement cycles or chirp transmissions. The techniques include static programming of the digital cores, peripherals and RF or analog circuits of the device in appropriate high-performance and low-power states, and dynamic transitions between the states. Low power states are generally achieved by switching off the bias current, or power supply, or clock inputs of a component, or significantly reducing the clock frequency.

During the operation of the radar sensor, identifying avenues to enter low power operations is important. The window of opportunity depends on the module and the nature of the processing being performed. The opportunities during the radar cycles include during the inter-chirp and inter-frame durations.