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12V5VBuckConverter

mtthewwatts·12V5VBuckConverter

12V5VBuckConverter PCB layout, top view — open source board by mtthewwatts

About the 12V5VBuckConverter PCB

12V5VBuckConverter is an open source PCB design by mtthewwatts, published on GitHub under the MIT license. It is a 2-layer board measuring 54 × 45 mm, with 19 components from 16 distinct parts.

Other key parts include the LM2679SD-5.0/NOPB. By type, the board carries 3 capacitors, 2 connectors, 2 LEDs, 1 IC, 1 diode and 1 inductor.

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

From the project

12V to 5V buck converter using LM2679, designed in KiCad 9. This was made for my MTE380 Course Project, to specifically fit my robot, but the physical board can be altered to fit other designs.

A custom KiCad-designed buck (step-down) converter PCB that regulates an 11.4V–12V LiPo battery input down to a stable 5V/5A output. Designed to power a Raspberry Pi 5 and control electronics on an autonomous line-following search-and-rescue robot, consolidating the robot's entire power system into a single battery source.

Built for MTE 380: Mechatronics Engineering Design Workshop at the University of Waterloo (Group 12).

Main components on the 12V5VBuckConverter

LM2679SD-5.0/NOPB

12V5VBuckConverter bill of materials (BOM)

19 components, 16 distinct parts.

QtyPartRefs
1
LM2679SD-5.0/NOPB
LM2679SD-5.0_NOPB
IC1
1
Battery Input
J1
1
Pi Power Out
J2
3
15 μF
C_IN1, C_IN2, C_IN3
2
180 μF
C_OUT1, C_OUT2
1
5.6k
R_LED_IN1
1
1.5k
R_LED_OUT1
1
0.01
R_SHUNT1
1
Red
D_LED_IN1
1
Blue
D_LED_OUT1
1
VS-6TQ045S-M3
D1
1
22 μH
L1
1
0.47 μF
C1
1
1 nF
C2
1
0.01 μF
C3
1
5.6k
R1

12V5VBuckConverter design files

The KiCad project lives in the mtthewwatts/12V5VBuckConverter repository on GitHub; these links point at the commit this page was built from.

12V5VBuckConverter: common questions

How big is the 12V5VBuckConverter PCB?

The 12V5VBuckConverter measures 54 × 45 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 12V5VBuckConverter?

19 components, from 16 distinct parts. The full bill of materials is listed on this page.

Where can I download the 12V5VBuckConverter design files?

From the mtthewwatts/12V5VBuckConverter repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the 12V5VBuckConverter design in my own project?

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

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