IWR1443BOOST: Current consumption

Shoko

Intellectual 745 points

Part Number: IWR1443BOOST
Other Parts Discussed in Thread: IWR1443

I'm demonstrating "lab0009-gesture-recog-twirl" of IWR1443BOOST.
I have a question;

How much amperage is a Current consumption of IWR1443BOOST in the gesture demo?

Please advise.

Shoko

over 6 years ago

0 Former Member over 6 years ago

Hello Shoko,

We do not have measurements specifically for the gesture demo. However you can reference the 1443 device datasheet. Section 5.6 Power consumption lists the values that can give you an approximate estimate of the values when the device is running the gesture demo.

Amanda

0 Shoko over 6 years ago in reply to Former Member

Intellectual 745 points

Dear Amanda,

Thanks for reply. I know the power consumption lists(Secyion 5.6) of IWR1443's datasheet.
However, I can't estimate the power comsumption when IWR1443BOOST is running the gesture demo.
It seems that the total current consumption value(3400mA) are too large.
Also, I don't know how many antennas are driven in the gesture demo.

Please let me know the following items;
-The average value of current comsumption in the gesture demo.
-Number of working TX & RX Antenna in the gesture demo.

Regards,
Shoko

0 Former Member over 6 years ago in reply to Shoko

Hello Shoko,

We do no have the average current consumption value of the demo. It has not been power optimized. You can either use the worst case information in the datasheet or download the power spreadsheet here and estimate the value based on the chirp parameters in the .cfg file

You can also check the configuration file (.cfg) to see how the sensors is configured.

For example, if you open the profile_2d_gesture_128.cfg file you will see the line: channelCfg 15 5 0 which translates to RX0-3 enabled (1111) and TX 0 & 2 enabled (101). Therefore there are 4RX and 2TX enabled.

Amanda

0 Shoko over 6 years ago in reply to Former Member

Intellectual 745 points

Dear Amanda,

Thank you very much for your response, power spreadsheet for IWR1443 and the information of configuration file!
I have checked power spreadsheet.
Could you please let me know the following item?
- Frame time
- ADC sampling rate
- Number of ADC samples/Chirp
- No of Chirps

I checked the datasheet, but I can't find & estimate them.

Thanks for your helping.
Shoko

0 Former Member over 6 years ago in reply to Shoko

Hello Shoko,

These parameters can be extracted from the .cfg file that is loaded to the sensor.
Please refer to the profile_2d_gesture_128.cfg file located at C:\ti\mmwave_industrial_toolbox_3_2_0_c\labs\lab0009-gesture-recog-twirl\chirp_configs

The SDK user's guide will show you how to extract the parameters in section 3. 4. Configuration (.cfg) File Format
software-dl.ti.com/.../mmwave_sdk_user_guide.pdf

For example,
From the .cfg file we see:
profileCfg 0 77 360 6 40 0 0 100 1 64 2000 0 0 48
frameCfg 0 0 128 0 55 1 0

The SDK user's guide details that the parameters mean:
profileCfg <profileID> <startFreq> <idleTime> <adcStatrtTime> <rampEndTime> <txPowerBackoff> <txPhaseShifter> <freqSlopeConst> <txStartTime> <numAdcSamples> <digOutSampleRate> <hpfCornerFreq1> <hpfCornerFreq2> <rxGain>
and
frameCfg <chirp start index> <chirp end index> <number of loops> <number of frames> <frame periodicity in ms> <trigger select> <Frame trigger delay>

Therefore as an example for the cfg parameters above:
- ADC sampling rate: 2000 ksps
- Number of ADC samples/Chirp: 64
- Frame time: 55ms
- No of Chirps: number of loops x virtual antennas = 128*4RX*2TX = 1024

Amanda

Sensors

Sensors forum

IWR1443BOOST: Current consumption