Dedicated page for the LT8490 MPPT solar charger online.
Finally I finished the prototype for the MPPT solar charger board with new Linear LT8490.
I got a 290W solar panel with a shattered glass cover for free.
Obviously someone else made a board layout from my schematic and put this online for manufacturing.
The green one is my layout version 3, shown here.
In December 2013 Linear Technology announced a new chip – LT8490. This chip includes a 80V Buck-Boost Lead Acid & Lithium Battery Charging Controller that actively finds true Maximum Power Point in solar applications.
No yet available, that chip looks very promising. It operates with input voltages down to 6V and can boost that to charge batteries with higher voltage. I made already a schematic and board design from the preliminary datasheet that charges a 3S LiPo from a solar panel with up to 5A. A small board size allows usage in model gliders with large wing span to charge the battery in flight.