Buck converter
About the Buck converter PCB
Buck converter is an open source PCB design by ajkumar-1907, published on GitHub under the MIT license. It is a 2-layer board measuring 53 × 36 mm, with 7 components from 7 distinct parts.
Other key parts include the LM2596S-5. By type, the board carries 2 connectors, 2 capacitors, 1 IC, 1 diode and 1 inductor.
It belongs with the power & battery designs in this gallery.
From the project
Open-source library of power electronics converter topologies — KiCad schematics, working principles, use cases, and design notes for DC-DC, AC-DC, DC-AC, and AC-AC converters. Free to use, modify, and build on.
A step-down DC-DC converter that produces a lower output voltage from a higher input voltage, using a switch, inductor, diode, and capacitor.
The buck converter is one of the most fundamental switch-mode power supply (SMPS) topologies. It steps down an input DC voltage to a lower, regulated output DC voltage by rapidly switching a transistor on and off and using an inductor-capacitor (LC) filter to smooth the output.
Main components on the Buck converter
Buck converter bill of materials (BOM)
7 components, 7 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | LM2596S-5 | TO-263-5_TabPin3 | U1 |
| 1 | INPUT | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J1 |
| 1 | OUTPUT | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J2 |
| 1 | 1N5820 | D_DO-35_SOD27_P7.62mm_Horizontal | D1 |
| 1 | 33uH | L_Coilcraft_MSS1278H-XXX | L1 |
| 1 | 470uF 50V | C_Radial_D8.0mm_H7.0mm_P3.50mm | C1 |
| 1 | 330uF 25V | C_Radial_D8.0mm_H7.0mm_P3.50mm | C2 |
Buck converter design files
The KiCad project lives in the ajkumar-1907/power-converter-lib repository on GitHub; these links point at the commit this page was built from.
Buck converter: common questions
How big is the Buck converter PCB?
The Buck converter measures 53 × 36 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Buck converter?
7 components, from 7 distinct parts. The full bill of materials is listed on this page.
Where can I download the Buck converter design files?
From the ajkumar-1907/power-converter-lib repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Buck converter design in my own project?
Yes, under the terms of its MIT license, which ajkumar-1907 chose for the repository.
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