PSU
About the PSU PCB
PSU is an open source PCB design by Blaze-Pascal, published on GitHub under the GPL-3.0 license. It is a 4-layer board measuring 50 × 26 mm, with 28 components from 16 distinct parts.
Other key parts include the TPS560430XDBVR and LM27762. By type, the board carries 14 capacitors, 8 resistors, 2 ICs, 2 connectors and 1 inductor.
It belongs with the test & measurement designs in this gallery.
From the project
Custom 2-channel digital oscilloscope DAQ with 20MHz bandwidth. Built with a custom KiCad analog front-end (AFE) PCB, Gowin FPGA (Tang Nano 9K) for high-speed signal buffering (VHDL), and an RPi Pico MCU for SCPI-like control. Includes a simple Python GUI for data visualization.
Goal: Build a custom data acquisition system capable of capturing and displaying fast analog signals with at least a 15 MHz bandwidth.
Project Scope: - Custom PCB & Analog Front-End (AFE): Designed and routed in KiCad. - FPGA Data Acquisition Engine (DAQ): Written in VHDL, deployed on a Tang Nano 9K (Gowin GW1NR-9). - MCU Control & Data Handling: Written in C (Arduino core) on a Raspberry Pi Pico, featuring a pseudo-SCPI command parser. - PC Software: A basic Python GUI for data visualization.
Main components on the PSU
PSU bill of materials (BOM)
28 components, 16 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | TPS560430XDBVR | SOT-23-6 | U101 |
| 1 | LM27762 | WSON-12-1EP_3x2mm_P0.5mm_EP1x2.65_ThermalVias | U102 |
| 1 | OUT_Conn | PinHeader_1x06_P2.54mm_Vertical | J101 |
| 1 | Barrel_Jack_Switch | BarrelJack_Horizontal | J102 |
| 1 | 50k | Potentiometer_Bourns_3296W_Vertical | RV101 |
| 1 | 15u | L_Wuerth_MAPI-3015 | L101 |
| 2 | 22u | C_0805_2012Metric | C101, C103 |
| 1 | 100n | C_0603_1608Metric | C102 |
| 4 | 4.7u | C_0603_1608Metric | C104, C106, C107, C108 |
| 1 | 470n | C_0603_1608Metric | C105 |
| 3 | 22u | CP_Elec_5x5.4 | C109, C110, C111 |
| 3 | DNP | C_0603_1608Metric | C112, C113, C114 |
| 1 | 10k | R_0603_1608Metric | R101 |
| 3 | 0R | R_0603_1608Metric | R102, R103, R108 |
| 2 | 470k | R_0603_1608Metric | R104, R105 |
| 2 | 150k | R_0603_1608Metric | R106, R107 |
PSU design files
The KiCad project lives in the Blaze-Pascal/Masters-Multi-Channel_DAQ repository on GitHub; these links point at the commit this page was built from.
- LayoutKiCad/PSU/PSU.kicad_pcb
- SchematicKiCad/PSU/PSU.kicad_sch
PSU: common questions
How big is the PSU PCB?
The PSU measures 50 × 26 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the PSU?
28 components, from 16 distinct parts. The full bill of materials is listed on this page.
Where can I download the PSU design files?
From the Blaze-Pascal/Masters-Multi-Channel_DAQ repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the PSU design in my own project?
Yes, under the terms of its GPL-3.0 license, which Blaze-Pascal chose for the repository.
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