I am attempting to make a usb solar charger from 8 solar panels. Each solar cell rated as such:
- Max Voltage: 0.574 V
- Max Current: 2.915 A
From what I understand if I connect 8 of these panels in series, their voltages add up to a total of 4.592 V @ 2.915 A
Firstly, how can I set up a circuit so I get a steady flow of 5V and a maximum of 2A from the solar panels, while still allowing for headroom, meaning that if ideal weather conditions aren't met, causing the panels' voltage and amperage to drop, I would still get 5V but amperage could be allowed to drop?
I've browsed the web for up-step voltage regulators but they mainly deal with maximums of 500mA. What other solutions are there, or can I hook up multiple voltage regulators to get a max of 2A? Additionally 8 solar panels is the maximum amount of panels I can fit on my project.