Buck Boost Solar Charge Controller

The sm72442 is a programmable mppt controller capable of controlling four pwm gate drive signals for a 4 switch buck boost converter.
Buck boost solar charge controller. 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. Buck boost battery charging controller handles 55 v. The device operates from input voltages above below or equal to the output voltage and can be powered by a solar panel. What is the maximum capacity of battery that i can charge using this circuit.
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. 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. 50 watt 3 5 amp buck boost mppt charge controller with lcd display for 12 volt systems. At what value i should set r8.
I was trying to make the diy solar boost converter with mppt charge controller with the following components. The lt8490 allows for a pv panel voltage in the range of 6v to 80v.