HardLabs

Lipo Charger

kkjjkamal123·Lipo_Charger

This repository ships a schematic but no board layout.

About the Lipo Charger PCB

Lipo Charger is an open source PCB design by kkjjkamal123, published on GitHub. It is a board, with 57 components from 24 distinct parts.

Other key parts include the BQ25703ARSNR. By type, the board carries 31 capacitors, 17 resistors, 5 transistors, 2 test points, 1 IC and 1 inductor.

It belongs with the power & battery and test & measurement designs in this gallery.

From the project

BMS and Circuit Designs for Base Station

- Overview - Key Features - Hardware Specifications - Power Stage & Signals - Bill of Materials Highlights - Repository Structure - Getting Started - Project Status - License - Acknowledgements

This repository contains a KiCad 9 electronics design project for a multi-cell Lithium-Polymer battery charger. The design is built around the Texas Instruments BQ25703A — a buck-boost, NVDC battery charge controller with an SMBus host interface, system power monitor (PSYS), and processor-hot (PROCHOT) output.

Main components on the Lipo Charger

BQ25703ARSNR

Lipo Charger bill of materials (BOM)

57 components, 24 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ25703ARSNR
U1
1
PMOS
Q1
4
NMOS
Q2, Q3, Q4, Q5
2
TestPoint
TP1, TP2
1
2.2uh
L1
2
47nf
C1, C2
1
3.3uf
C3
3
1uf
C4, C13, C18
17
10uf
C5, C6, C7, C8, C12, C14, C15, C16 +9
2
0.033uf
C9, C10
1
0.1uf
C11
1
33pf
C27
1
1800pf
C28
1
15pf
C29
1
680pf
C30
1
100pf
C31
2
R
R1, R2
7
10K
R3, R4, R5, R6, R13, R14, R16
1
10mohm
R7
2
4.99ohm
R8, R9
Show 4 more
QtyPartRefs
1
0.01ohm
R10
2
10ohm
R11, R12
1
40.2k
R15
1
137k
R17

Lipo Charger design files

The KiCad project lives in the kkjjkamal123/Lipo_Charger repository on GitHub; these links point at the commit this page was built from.

Lipo Charger: common questions

How many components are on the Lipo Charger?

57 components, from 24 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 Lipo Charger design files?

From the kkjjkamal123/Lipo_Charger repository on GitHub, which has the schematic and the BOM; the links under Design files point to each one.

Can I use the Lipo Charger design in my own project?

The repository has no license, so all rights stay with kkjjkamal123. Use it as a reference, and ask the author before reusing the design.

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