Hi,
I probed 3.3V rail with the oscilloscope and attached the same. As we can see, it is not dropping to 0.9V but going between 3.3V and 2.4V. Also,I have noticed a strange behaviour in my board, I removed the 3.3V sense resistor and connected my multimeter in 10A current mode across the sense resistor. With this setup, I do not see anything like in the image attached, it was a stable 3.3V. The sense resistor is just 20mili ohms and I hav no idea why my board is not working as expected with the sense resistor connected instead of multimeter in current mode. Is there any logic behind this?
Thanks,
Muthu