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STM32G474-Power-Charger

Aleksei327·STM32G474-Power-Charger·hardware/kicad/Power_Charg_AUTO_12V_C.kicad_pcb

STM32G474-Power-Charger PCB layout, top view — open source board by Aleksei327

About the STM32G474-Power-Charger PCB

STM32G474-Power-Charger is an open source PCB design by Aleksei327, published on GitHub. It is a 2-layer board measuring 116 × 90.5 mm, with 134 components from 49 distinct parts.

Other key parts include the IR2113, WeAct_STM32G474CEU6_MiniCore, LM2596S-ADJ(12V), AMS1117-3.3V and PC817. By type, the board carries 52 resistors, 45 capacitors, 18 diodes, 6 connectors, 5 ICs and 4 transistors.

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

From the project

Experimental STM32G474-based high-current battery charger and programmable synchronous buck converter. KiCad hardware and STM32CubeIDE firmware.

The hardware is an STM32G474-controlled synchronous buck converter fed by a modified ATX power supply.

The PCB file contains the main converter board and several small auxiliary board sections in one drawing. This is why the 3D top/bottom render shows separated islands.

The assembled prototype includes hand wiring and component changes made during bring-up. Photographs and engineering notes document that state, but the KiCad layout must still be reviewed against the actual unit before another board is manufactured.

Main components on the STM32G474-Power-Charger

IR2113WeAct_STM32G474CEU6_MiniCoreLM2596S-ADJ(12V)AMS1117-3.3VPC817

STM32G474-Power-Charger bill of materials (BOM)

134 components, 49 distinct parts.

QtyPartRefs
1
IR2113
U1
1
WeAct_STM32G474CEU6_MiniCore
U2
1
LM2596S-ADJ(12V)
U4
1
AMS1117-3.3V
U5
1
PC817
U6
2
IRFB4110
Q1, Q2
2
D882
Q4, Q5
1
LCD_ST7735
J1
1
ENCODER
J2
1
BTN_RESET
J3
1
BTN_MENU
J4
1
BTN_START
J5
1
FAN
J6
1
JD1914
K1
1
Thermistor_NTC
TH1
2
SS14
D2, D5
1
B340
D3
15
1N4148
D4, D6, D7, D8, D9, D10, D11, D12 +7
1
68uH
L1
1
22uH
L2
Show 29 more
QtyPartRefs
2
330uF
C1, C2
2
220uF
C5, C6
18
100nF
C7, C8, C9, C10, C24, C27, C28, C29 +10
8
470uF
C11, C17, C18, C19, C20, C39, C40, C41
4
10uF
C13, C14, C15, C16
2
10nF
C21, C26
2
10uF
C22, C42
3
1uF
C23, C34, C43
1
2nF
C32
2
470pF
C36, C37
1
4.7uF
C46
1
0 Om
R00
1
1,2 kOm
R1
1
10,5 kOm
R2
1
680
R3
2
100kOm
R4, R48
3
0.01
R6, R10, R11
1
180kOm
R7
1
220
R8
10
100
R12, R13, R16, R17, R18, R19, R20, R29 +2
2
1kOm
R14, R52
14
10kOm
R15, R31, R32, R35, R36, R40, R41, R42 +6
1
200kOm
R21
3
22kOm
R22, R27, R28
4
4.7kOm
R23, R25, R26, R47
1
6.8kOm
R24
4
10
R33, R34, R38, R39
1
1kOm
R46
1
470
R50

STM32G474-Power-Charger design files

The KiCad project lives in the Aleksei327/STM32G474-Power-Charger repository on GitHub; these links point at the commit this page was built from.

STM32G474-Power-Charger: common questions

How big is the STM32G474-Power-Charger PCB?

The STM32G474-Power-Charger measures 116 × 90.5 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the STM32G474-Power-Charger?

134 components, from 49 distinct parts. The full bill of materials is listed on this page.

Where can I download the STM32G474-Power-Charger design files?

From the Aleksei327/STM32G474-Power-Charger repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the STM32G474-Power-Charger design in my own project?

The repository has no license, so all rights stay with Aleksei327. Use it as a reference, and ask the author before reusing the design.

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