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BMS-6s

Manasviii15·BMS-6s·Netlist/BMS_Netlist.net

This repository ships a schematic but no board layout.
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About the BMS-6s PCB

BMS-6s is an open source STM32 PCB design by Manasviii15, published on GitHub. It is a board, with 15 components from 6 distinct parts.

Its main chip is the STM32G0B1RET6, from the STM32 family. Other key parts include the BQ76940PFBR and TJA1051T/3/1J. By type, the board carries 8 transistors, 3 ICs and 1 fuse.

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

From the project

Battery Management System for 6s Li-ion pack

1. Upload Gerbers ZIP → Select 4-layer 2. Dimensions: 160 × 110 mm 3. Quantity: 5–10 (prototype) 4. Layer stackup: JLC04161H-7628 (or equivalent) 5. Cu thickness: Specify 1/1/2/3 oz (non-standard — confirm with fab) 6. Surface finish: ENIG 7. Solder mask: Green 8. Request impedance test coupon (50 Ω)

⚠️ High voltage warning: Pack voltage up to 26.1V (6S), max 60V transient ⚠️ High current: 70A continuous, 300A short-circuit. Use proper fusing. ⚠️ ESD sensitive: U1, U2, U3 are ESD sensitive. Handle with ESD precautions. ⚠️ Pre-charge: Always use pre-charge circuit before connecting capacitive…

Main components on the BMS-6s

BQ76940PFBRSTM32G0B1RET6TJA1051T/3/1J

BMS-6s bill of materials (BOM)

15 components, 6 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
BQ76940PFBR
BQ76940
Texas Instruments
U1
1
STM32G0B1RET6
STMicroelectronics
U2
1
TJA1051T/3/1J
TJA1051T/3
NXP Semiconductors
U3
8
IRFB7537PBF
Vishay Siliconix
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8
1
0498100.MXP
100A/58V
Littelfuse
F1
3
B57164K103J
10k B3977
TDK
NTC1, NTC2, NTC3

BMS-6s design files

The KiCad project lives in the Manasviii15/BMS-6s repository on GitHub; these links point at the commit this page was built from.

BMS-6s: common questions

What microcontroller does the BMS-6s use?

The BMS-6s is built around the STM32G0B1RET6, from the STM32 family.

How many components are on the BMS-6s?

15 components, from 6 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 BMS-6s design files?

From the Manasviii15/BMS-6s repository on GitHub, which has a netlist and the BOM; the links under Design files point to each one.

Can I use the BMS-6s design in my own project?

The repository has no license, so all rights stay with Manasviii15. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the BMS-6s without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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