4 open source boards using the CN3791
Real designs built with the CN3791, from public GitHub projects: a quick way to see how others power, decouple and connect it. Each board comes with its KiCad files, full parts list and a render — and you can simulate its firmware on HardLabs.
MPPT Li-Ion CN3791 charger board
SolderedElectronics
54 × 38 mm33 parts2LTAPR-OHL-1.05- schematic only · 23 parts
SmartGarden
Silverlode76
23 partsMIT1 
MPPT Li-Ion CN3791 charger board panel
4.8 × 4.7 mm33 parts2LTAPR-OHL-1.05
MPPT Li ion charger CN3791
54 × 38 mm32 parts2LTAPR-OHL-1.05
The CN3791 in open source designs
The gallery holds 4 open source boards using the CN3791 from 2 GitHub repositories; a typical one measures about 54 × 38 mm and carries around 33 components.
100% are two-layer designs, the rest use four layers or more, and 100% carry an open source license.
The most starred is MPPT Li-Ion CN3791 charger board by SolderedElectronics.
What boards using the CN3791 are built for
CN3791: common questions
Where can I find a CN3791 reference design?
Each of the 4 boards on this page is a real design using the CN3791. Open one to see how it is wired up, with the full BOM, a render of the layout and links to its KiCad files.
How big is a typical board using the CN3791?
The median is 54 × 38 mm, and 100% are two-layer designs.
What is the most popular open source board using the CN3791?
By GitHub stars, MPPT Li-Ion CN3791 charger board by SolderedElectronics, with 5 stars.
Can I simulate one of these boards using the CN3791 before building it?
Yes. HardLabs turns a board's netlist and BOM into a working simulation, so you can boot and test firmware against it with no hardware on your desk.