Wow, now I'm completly confused.
Here is the right schematic:
"Without any gate driven low the uC gets it´s power via the mosfet internal body diodes. There will be about 0.55V of voltage drop.
Adding schottky diodes in parallel to the internal body diodes may reduce the voltage drop. "
So what is the point of this circuit compare to a simple schottky diode if finnaly I still have a schottky diode with a low voltrage drop at the end?
Sorry I really don't understand, here is the schematic of what i think you tell me:
"For sure the gate needs some logic to drive it. Currently there are just the powerpath switches.
Your uC maybe has an ADC to measure all the capacitor voltages... and four outputs for the Mosfet_gates."
I need an ADC powered to drive the fourth PMOS, means I need minimum one PMOS to powersupply the ADC, it's like a loop ∞
"Why do you have four capacitors with individual charge levels? What is the idea behind this? Why not one big capacitor?"
Imagine that I have a solar cells which charge a super cap, another solar cell charges a super cap, a micro motor generator charges another supercap then micro motor generator charges a 4th supercap.
It's like energy havesting, I want to use these potential energy to supply a my µC
Thank you very much for your help I really appreciate