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IWR6843AOP: how to reduce power consumption on IWR6843AOP

Poh Kok Keng
Genius 5512 points
Part Number: IWR6843AOP

Tool/software:

hi Support, 

I am using IWR6843AOP in my custom board, I noticed Heat spreading still is a critical problem with high power consumption in module. May I know how the necessary operating duty cycle suitable for People counting application?  Current they set up default for 46% with 20frame/sec in application.  

If reduce the frame rate to 10frame/sec for People counting, how’s mmWave module performance impact? As you know, reduce frame rate the power consumption will be significate downgraded.

Can I also check if the current People counting solution in Resource Explorer is the general stack or only target to people counting application? If it is for general SDK stack application, are we able to stripe down the SDK to only suite for people counting applicaliton in order to lower down the power consumption? 

Best Regards,

KPK

  • 0
    TI__Genius 11850 points

    Hi

    There are couple of approaches which will help you to reduce 

    1. Implement DSS clock gating in inter frame time

    2.Change MSS clock to 40MHz in the interframe time

    This technique should help you to save around 500mW in 3D people tracking demo

    To implement these 2 techniques, you need to refer to the below example which already has both the techniques implemented.

    radar_toolbox_2_30_00_12\source\ti\examples\Fundamentals\xWR6843_Low_Power_Modes

    Same code structure in this demo can be brought over to people counting demo to reduce power significantly

    Regards