Part Number: IWR6843AOPEVM
Hi TI Sensors Support Team,
I bought and received a IWR6843AOPEVM made by Mistral recently. This board with a on-board heat sink looks different from pictures on TI website. I found it unfits MMWAVEICBOOST and the J2 of IWR6843AOPEVM (a yellow rectangular area in Fig. 1) cannot be dropped in J4 of MMWAVEICBOOST due to the heat sink against J17 on MMWAVEICBOOST (a red circle area in Fig. 1 and a red rectangular area in Fig. 2 ). Per my observation, the displacement of the heat sink results from an uneven PCB edge (a green oval area in Fig 3). Who can I contact to resolve this issue? Thanks
Does it fit without the heat sink? if yes, then you can operate the board without it.
Although it is recommended, the Heat sink is not a mandatory requirement for the EVM use. Due to the smaller size of the IWR6843AOPEVM it is likely to get warmer than other larger sized EVMs on the mmWave Radar portfolio, therefore care needs to be taken to ensure the junction temperature does not exceed 105 deg C.
The plot below shows measurement of junction temperature vs duty cycle taken with and without the heat sink. As seen in the plot the EVM can safely operate up to 50% duty cycle.
When using the EVM for custom applications the duty cycle can be adjusted as needed, heat sink provided with the kit can be used, customer can also design their own heat sink.
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In reply to JAMES YU:
The setup looks good.
Please ensure you hit reset after setting the SOP pin and also confirm that there are not other applications connected to the COM ports.
Can you try flashing the EVM in standalone mode?
Section 4.5 of the user's guide has more details on this.
It appears you are attempting to flash the wrong binary to the device.
please follow the instructions on the link below
is it failing when you send the config?
In reply to Charles Oladimeji:
There was no response even though I clicked "SEND CONFIG TO MMWAVE DEVICE". "COM5:115200, COM6:921600 connecting to 2 of targets" was shown and the red bar line kept running.
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