桂花蒸

Single lithium battery mppt module

Overview

The single-cell lithium battery charging module using CN3791
has MPPT function .
The mppt voltage can be switched through different pads.
The constant current value can be set through the current detection resistor. The maximum 4A

has been verified and used normally. I share it for your reference.
The video tests the charging in 5v mode, and the effect is very obvious.
Some notes are written in the schematic diagram, and the chip manual is also in the attachment for
your reference.

Design Files

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Update:2025-05-08 15:35:11

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