Greetings, Im currently testing my custom made PCB which houses the AWR1843AOP radar sensor chip. The design is mostly based on the reference schematics of the AWR1843AOPEVM (basically a redesign of the break-away part on the EVM, excluding the FTDI part).
The issue is that after supplying the board with power, the whole board draws about 0.73 Watts (0.22 A at 3.33v) for seems like exactly 8 seconds, then goes to zero. If I do a reset or turn power on/off, it turns again for said 8 seconds before shutting off.
Perhaps it's a known pattern and you could suggest a cause for it, before doing a complete debug. I verified that input voltages of 3.3, 1.8, 1.2 and 1.0v are there (but could be a loose connection/short circuit under some BGA pin)
Thanks in advance.