HardLabs

Power Supply

adsehgal·Bench_Power_Supply·V1.0/Hardware/DC_DC_Converter/KiCad_Project_Files/Power_Supply.kicad_pcb

Power Supply PCB layout, top view — open source AVR/Arduino board by adsehgal
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About the Power Supply PCB

Power Supply is an open source AVR/Arduino PCB design by adsehgal, published on GitHub. It is a 2-layer board measuring 100 × 50 mm, with 94 components from 43 distinct parts.

Its main chip is the ATMEGA328PB-AU, from the AVR/Arduino family. Other key parts include the MIC5205-5.0YM5, TPS54531DDAR, LM358, INA138 and MCP4023-103ECH. By type, the board carries 35 capacitors, 25 resistors, 11 ICs, 9 diodes, 4 connectors and 4 switches.

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

From the project

A design for a custom bench top power supply for prototyping.

This repo contains project files for a bench top power supply I designed for my home lab.

- Small for crammed work spaces - Adjustable and designed to store values on each power cycle - 2 layer board - V2.0 bumped to 4 layer - Digitally controlled - no mechanical parts - Clear annunciators - Uses an external AC-DC converter - At least a 2A max load - Cover most logic levels - Possibly have preset buttons

Power Supply, from the project README
From the project README

Main components on the Power Supply

MIC5205-5.0YM5ATMEGA328PB-AUTPS54531DDARLM358INA138MCP4023-103ECHCH340EMIC5205-3.3YM5PCA9306SSD1306_0.96IN

Power Supply bill of materials (BOM)

94 components, 43 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
MIC5205-5.0YM5
U1
1
ATMEGA328PB-AU
ATmega328PB-AU
U2
1
TPS54531DDAR
U3
2
LM358
U4, U11
1
INA138
U5
1
MCP4023-103ECH
U6
1
CH340E
U7
1
MIC5205-3.3YM5
U8
1
PCA9306
U9
1
SSD1306_0.96IN
SSD1306_0.96in
U10
3
FDN335N
Q1, Q2, Q3
1
16MHZ
16MHz
Y1
2
CONN_01X01
Conn_01x01
J2, J3
1
SCREW_TERMINAL_01X02
Screw_Terminal_01x02
J4
1
USB_C_RECEPTACLE_USB2.0
USB_C_Receptacle_USB2.0
J5
1
MF-PSMF020X-2
F1
1
UP
SW1
1
DW
SW2
1
V_I_SEL
SW3
1
O_EN
SW4
Show 23 more
QtyPartRefs
1
CL
D1
1
OUT
D2
1
BAT1000
D3
6
CUS10S30
D4, D5, D6, D7, D8, D9
1
4.7µH
L1
2
10NF
10nF
C1, C8
15
100NF
100nF
C2, C3, C6, C9, C10, C19, C20, C21 +7
5
4.7µF
C4, C5, C16, C18, C32
2
10UF
10uF
C7, C12
6
1µF
C11, C26, C29, C30, C31, C33
1
2.2NF
2.2nF
C13
3
22PF
22pF
C14, C15, C17
1
2.2µF
C34
2
330R
R1, R2
9
10K
R3, R6, R8, R9, R10, R12, R17, R20 +1
2
5.1K
R4, R11
2
2.2K
R5, R14
1
37.4K
R7
1
0.01R
R13
1
390K
R15
3
14K
R16, R19, R23
1
500K
R18
3
1K
R21, R22, R25

Power Supply design files

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

Power Supply: common questions

What microcontroller does the Power Supply use?

The Power Supply is built around the ATMEGA328PB-AU, from the AVR/Arduino family.

How big is the Power Supply PCB?

The Power Supply measures 100 × 50 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Power Supply?

94 components, from 43 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 Power Supply design files?

From the adsehgal/Bench_Power_Supply repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Power Supply design in my own project?

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

Can I test firmware for the Power Supply without the hardware?

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

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