Buck Boost Solar Charge Controller

What is the maximum capacity of battery that i can charge using this circuit.

Buck boost solar charge controller.

50 watt 3 5 amp buck boost mppt charge controller with lcd display for 12 volt systems. The sm72442 also features a proprietary algorithm called panel mode which allows for the panel to be connected directly to the output of your power optimizer circuit. The device operates from input voltages above below or equal to the output voltage and can be powered by a solar panel. The lt8490 is a buck boost switching regulator battery charger that implements a constant current constantvoltage cccv charging profile used for most battery types including sealed lead acid sla flooded gel and lithium ion.

I was trying to make the diy solar boost converter with mppt charge controller with the following components. The sm72442 is a programmable mppt controller capable of controlling four pwm gate drive signals for a 4 switch buck boost converter. L1 330uh 2 4a solar panel 6v 5w q1 irf540n d1 1n5819 will it work. At what value i should set r8.

This design uses a buck boost topology and allows the pv solar voltage to be above below or equal to the battery voltage. For example you could charge a 48v battery bank from a 72 cell pv panel with a maximum power point voltage v mp of around 37v.