HardLabs

USB-C-Portable-PSU

Ng-Chen-Xuan·USB-C-Portable-PSU·elec/elec.kicad_pcb

USB-C-Portable-PSU PCB layout, top view — open source STM32 board by Ng-Chen-Xuan

About the USB-C-Portable-PSU PCB

USB-C-Portable-PSU is an open source STM32 PCB design by Ng-Chen-Xuan, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 58 × 58 mm, with 151 components from 34 distinct parts.

Its main chip is the STM32G030K8T6, from the STM32 family. Other key parts include the HUSB238A-XXXXX-QN16R, SY8303AIC, TPS55289RYQR and IS31FL3731-QF. By type, the board carries 65 diodes, 41 resistors, 24 capacitors, 6 switches, 5 ICs and 5 connectors.

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

From the project

USB-C PD powered variable power supply

The USB-C-Portable-PSU Project is a portable variable power supply designed using KiCad v10.

The PCB was designed with a 4 layer stackup of SIG + PWR / GND / GND / PWR + SIG.

This PCB design serves as both an introduction to power electronics design, as well as a practical tool for hobbyist. Theoretical design practices learnt such as minimising trace inductance, buck-boost converter topology and USB-PD design can be tested in real-life conditions; Practice in programming an LED matrix display and experimentation of the STM32 ecosystem can be gained too.

USB-C-Portable-PSU, from the project README
From the project README

Main components on the USB-C-Portable-PSU

HUSB238A-XXXXX-QN16RSY8303AICSTM32G030K8T6TPS55289RYQRIS31FL3731-QF

USB-C-Portable-PSU bill of materials (BOM)

151 components, 34 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
HUSB238A-XXXXX-QN16R
HUSB238A-xxxxx-QN16R
U1
1
SY8303AIC
U2
1
STM32G030K8T6
U3
1
TPS55289RYQR
U4
1
IS31FL3731-QF
U6
1
AO4419
Q1
1
C5178539
USB_C_Receptacle
J1
1
CONN_01X05
Conn_01x05
J2
1
SCREW_TERMINAL_01X02
Screw_Terminal_01x02
J3
2
CONN_01X03
Conn_01x03
J4, J5
1
C391035
Buzzer
BZ1
1
SW_Push
SW2
5
SW_Push
SW3, SW4, SW5, SW6, SW7
1
C13564
Thermistor_NTC
TH1
1
C2103
D_Zener
D1
64
LED
D2, D3, D4, D5, D6, D7, D8, D9 +56
1
47UH
47uH
L1
1
4.7UH
4.7uH
L2
3
4U7
4u7
C1, C3, C4
9
0.1UF
0.1uF
C2, C6, C7, C8, C9, C10, C20, C21 +1
Show 14 more
QtyPartRefs
1
10PF
10pF
C5
6
22UF
22uF
C11, C13, C14, C15, C16, C17
1
10UF
10uF
C12
1
100PF
100pF
C18
3
1UF
1uF
C19, C22, C23
21
20K
20k
R1, R2, R3, R4, R5, R11, R14, R18 +13
3
2K2
2k2
R6, R12, R13
3
1M
R7, R8, R40
3
100K
100k
R9, R15, R16
1
470R
R10
1
15M
15m
R17
1
147K
147k
R20
7
1k
R26, R27, R28, R32, R34, R35, R36
1
C21189
0R
R33

USB-C-Portable-PSU design files

The KiCad project lives in the Ng-Chen-Xuan/USB-C-Portable-PSU repository on GitHub; these links point at the commit this page was built from.

USB-C-Portable-PSU: common questions

What microcontroller does the USB-C-Portable-PSU use?

The USB-C-Portable-PSU is built around the STM32G030K8T6, from the STM32 family.

How big is the USB-C-Portable-PSU PCB?

The USB-C-Portable-PSU measures 58 × 58 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the USB-C-Portable-PSU?

151 components, from 34 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 USB-C-Portable-PSU design files?

From the Ng-Chen-Xuan/USB-C-Portable-PSU 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 USB-C-Portable-PSU design in my own project?

Yes, under the terms of its CERN-OHL-S-2.0 license, which Ng-Chen-Xuan chose for the repository.

Can I test firmware for the USB-C-Portable-PSU without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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