HardLabs

Stm32-buck converter

ikajdan·stm32-buck-converter·hardware/buck_converter.kicad_pcb

Stm32-buck converter

About the Stm32-buck converter PCB

Stm32-buck converter is an open source PCB design by ikajdan, published on GitHub under the MIT license. It is a 2-layer board, with 45 components from 29 distinct parts.

Other key parts include the LM358. By type, the board carries 14 resistors, 9 capacitors, 7 switches, 4 connectors, 3 diodes and 2 ICs.

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

From the project

A DC-DC buck converter based on an STM32 Nucleo board

A buck converter is a DC-DC power electronics device which reduces input voltage to a desired level. The most basic implementation consists of a transistor, a diode, an inductor and output capacitor. The efficiency of a such circuit can often exceed 90 percent.

The goal of this project is to design and build a DC to DC buck converter. The system will perform cyclic, synchronous measurement of the output voltage and current (using a series shunt resistor) and adjust these parameters according to values set by the user. A maximum steady-state error should not exceed 1% of the control range…

Main components on the Stm32-buck converter

LM358

Stm32-buck converter bill of materials (BOM)

45 components, 29 distinct parts.

QtyPartRefs
2
LM358
U1, U2
1
IRF9540N
Q1
1
BC547
Q2
1
In
J1
1
Out
J2
1
MicroSD Card
J3
1
Nucleo
J4
1
WC1602
DS1
1
Photo
LDR1
1
10kΩ
RV1
1
Preset #1
SW1
1
Preset #2
SW2
1
Preset #3
SW3
1
Preset #4
SW4
1
Output
SW5
1
Reset
SW6
1
Encoder
SW7
1
1N4007
D1
2
LED
D2, D3
1
100µH
L1
Show 9 more
QtyPartRefs
1
10µF
C1
1
47µF
C2
7
100nF
C3, C4, C5, C6, C7, C8, C9
1
0.1Ω (5W)
R1
2
10kΩ
R2, R14
1
8.2kΩ
R3
6
1kΩ
R4, R6, R7, R9, R10, R11
2
100Ω
R5, R8
2
300Ω
R12, R13

Stm32-buck converter design files

The KiCad project lives in the ikajdan/stm32-buck-converter repository on GitHub; these links point at the commit this page was built from.

Stm32-buck converter: common questions

How big is the Stm32-buck converter PCB?

The Stm32-buck converter has 2 copper layers and is 1.6 mm thick.

How many components are on the Stm32-buck converter?

45 components, from 29 distinct parts. The full bill of materials is listed on this page.

Where can I download the Stm32-buck converter design files?

From the ikajdan/stm32-buck-converter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Stm32-buck converter design in my own project?

Yes, under the terms of its MIT license, which ikajdan chose for the repository.

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