Hello,
I purchased the STEVAL-ISV019V1 evaluation board. After connecting the solar panel, the VSTORE voltage reached the EOC threshold, and the LDO2 output voltage was also normal and stable at 3.3V. However, when I used LDO2 to power the sensor node, the VSTORE voltage dropped and the LDO2 output voltage fell to 1.2V. After that, I disconnected the load and measured the VSTORE voltage at 2.881V. However, the VSTORE voltage did not rise again for a long time. What could be causing this? Is it possible that the chip is damaged, or that another component has failed?
My solar panel open-circuit voltage is between 2.8V and 3.4V.
Thank you for your reply and help.
