I am having a problem getting a supercap to be fully charged before being discharged by a 0.9 V to 5 V booster.
Here is my situation: I am using TEG to charge a capacitor to 2.3 V. I am able to do that if I disconnect the 0.9 V to 5 V booster. However, when I connect the booster, it will discharge my supercap when it is charged to 0.9 V.
How do I allow my supercap to be fully charged to 2.3 V before being discharged completely? Based on the diagram, I want my microcontroller to be active for around 10 seconds to complete a task. If the supercap is always being discharged at 0.9 V, my microcontroller is only active for 1 second and then goes back to off mode.
Does anyone have an idea? I'm doing energy harvesting, I don't want to use any external power sources like batteries.