MPPT Li ion charger CN3791
About the MPPT Li ion charger CN3791 PCB
MPPT Li ion charger CN3791 is an open source PCB design by SolderedElectronics, published on GitHub under the TAPR-OHL-1.0 license. It is a 2-layer board measuring 54 × 38 mm, with 32 components from 25 distinct parts.
Other key parts include the CN3791. By type, the board carries 9 resistors, 7 capacitors, 5 diodes, 4 relays, 1 IC and 1 jumper.
It belongs with the power & battery designs in this gallery.
From the project
Hardware design, BOM, gerbers and 3D files for MPPT-Li-Ion-CN3791-charger-board designed by Soldered Electronics.
Introducing our new MPPT Li-Ion charger, your all-in-one solution for efficient and reliable battery charging using solar energy! Whether you’re a hobbyist tinkering with electronics or a professional in need of a compact charging solution, this board will make things easier.
On board is the CN3791 which provides sophisticated charging algorithms tailored to Li-Ion batteries, ensuring precise control over the charging process for maximum efficiency and safety. Next to it, there are quick terminals with springs on the board for an even simpler and faster connection of the solar panel and…
Main components on the MPPT Li ion charger CN3791
MPPT Li ion charger CN3791 bill of materials (BOM)
32 components, 25 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | CN3791 | CN3791 | U1 |
| 4 | HOLE_3.2mm | HOLE_3.2mm | H1, H2, H3, H4 |
| 1 | SMD-JUMPER-CONNECTED_TRACE_SLODERMASK | SMD-JUMPER-CONNECTED_TRACE_SLODERMASK | JP1 |
| 2 | TERMINAL_KF235-5.0-2P | TERMINAL_KF235-5.0-2P | K1, K6 |
| 1 | HEADER_FEMALE_4X2 | HEADER_FEMALE_4X2 | K2 |
| 1 | JST-2pin-SMD | JST-2pin-SMD | K3 |
| 1 | Green | 0402LED | D1 |
| 1 | Red | 0402LED | D2 |
| 1 | AOD4185 | DPAK | D3 |
| 1 | RBR5LAM30ATFTR | RBR5LAM30ATFTR | D4 |
| 1 | purple | 0402LED | D5 |
| 1 | YPRH1209-470M | YPRH1209-470M | L1 |
| 2 | 10uF | 1206C | C1, C6 |
| 1 | 1uF | 0603C | C2 |
| 2 | VKMD1451H221MV | ELECTROLITIC_CAP_8x8x14.5 | C3, C7 |
| 1 | 100nF | 0603C | C4 |
| 1 | 220nF | 0603C | C5 |
| 2 | 2k2 | 0402R | R1, R9 |
| 1 | 120R | 0603R | R2 |
| 1 | 30k | 0603R | R3 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 62k | 0603R | R4 |
| 1 | 300k | 0603R | R5 |
| 1 | 130k | 0603R | R6 |
| 1 | 75k | 0603R | R7 |
| 1 | 40m | 1210R | R8 |
MPPT Li ion charger CN3791 design files
The KiCad project lives in the SolderedElectronics/MPPT-Li-Ion-CN3791-charger-board-hardware-design repository on GitHub; these links point at the commit this page was built from.
MPPT Li ion charger CN3791: common questions
How big is the MPPT Li ion charger CN3791 PCB?
The MPPT Li ion charger CN3791 measures 54 × 38 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the MPPT Li ion charger CN3791?
32 components, from 25 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the MPPT Li ion charger CN3791 design files?
From the SolderedElectronics/MPPT-Li-Ion-CN3791-charger-board-hardware-design repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the MPPT Li ion charger CN3791 design in my own project?
Yes, under the terms of its TAPR-OHL-1.0 license, which SolderedElectronics chose for the repository.
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