[Moved] Solar Li-ion battery charger

[pmadithya]

Hello,

Could anyone provide me a schematic or charging ic to charge a Li ion battery 11.1V,5.2Ah using 10W solar panel. Panel Specs - Maximum Power Voltage- 17.5 ,Maximum Power Current (A) - 0.57.

 

[Mithun_K_Das]

use a buck converter. Also read this document first:

 

[mtwieg]

It recently occurred to me that it would be an interesting challenge to charge a Li chemistry battery with a solar panel. The standard implementation of lithium charging schemes and MPPT have somewhat contradicting needs, and I have yet to see anyone come out with a control IC that addresses this issue (many can handle lead acid or NiMh batteries, but not lithium). If you don't care about absolute optimization then you could forget about MPPT and save yourself a lot of trouble, though.