2 layers113 × 56.3 mm
MP1Flight
TangoPush/MP1Flight
STM32MP1 based flight controller based off the Pixracer.
72 parts5CC0-1.0
2 layers98.3 × 93.3 mm
Power Control Unit PCB
BLESS-BEXUS/Power-Control-Unit-System-PCBOpen-source PCB for power distribution and regulation from a 28 V DC input to 3.3 V, 5 V and 12 V regulated rails.
- Size
- 98.3 × 93.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 30
- Nets
- 11
- Pads
- 143
- Tracks, vias
- 108, 30
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 14 Jun 2026
- Updated
- 14 Jun 2026
Overview
Power Control Unit PCB is an open-source printed circuit board by BLESS-BEXUS, from the BLESS-BEXUS/Power-Control-Unit-System-PCB repository on GitHub. It is a 2-layer board of 98.3 × 93.3 mm with 30 parts on 11 nets, routed with 108 tracks and 30 vias.
It is built around the TSR 3-24120N, TSR 1-2433 and TSR 1-2450, with the 04511.25MRL among its other parts. Its parts include 6 capacitors, 5 connectors, 3 ICs, 3 diodes and 1 fuse.
Main components
4
TSR 3-24120N
插件,14x7.6mm-40℃~+90℃ 1 10.2mm 12V 14mm 15V~36V 1MHz 1mA 3A 470uF 7.6mm 75mVp-p 94% Plastic encapsulated type Short Circuit Protection、Over Current Protection、Under Voltage Protection、Automatic fault recovery Step-down type ±2% 插件,14x7.6mm DC-DC Power Modules ROHSTRACO POWERDC-DC Power Modules
TSR 1-2433
SIP,11.6x7.5mm-40℃~+85℃ 1 10.2mm 11.6mm 1A 2200uF 3.3V 300uA 50mVp-p 6V~36V 7.5mm 80%、90% 850kHz Plastic encapsulated type Short Circuit Protection、Automatic fault recovery Step-down type ±1% SIP,11.6x7.5mm DC-DC Power Modules ROHSYLPTECDC-DC Power ModulesTSR 1-2450
SIP,11.6x7.5mm-40℃~+85℃ 10.2mm 11.6mm 1A 2200uF 300uA 50mVp-p 5V 7.5mm 7V~36V 850kHz 94% Short Circuit Protection、Automatic fault recovery ±1% SIP,11.6x7.5mm DC-DC Power Modules ROHSYLPTECDC-DC Power Modules
04511.25MRL
2410-55℃~+125℃ 0.664 1.25A 125V 125V 2.5mm 50A 6.1mm Surface Mount Fuse 2410 Disposable fuses ROHSLittelfuseDisposable Fuses
README
README.md
Power Control Unit
A custom PCB designed to distribute and regulate a single 28 V DC input into multiple power rails for embedded hardware systems.
Overview
The main goal of this PCB is to provide a compact and reliable power distribution stage for embedded systems that require several regulated voltage rails from a single DC input.
The board takes a nominal 28 V DC input and generates the regulated power rails required by the system:
- 3.3 V for logic, microcontrollers and digital sensors.
- 5 V for auxiliary electronics and interface modules.
- 12 V for higher-power loads such as heaters or dedicated subsystems.
This PCB centralizes power conversion, protection and distribution, making the overall system easier to integrate, debug and maintain.
Purpose
This board is designed to simplify power management in systems where multiple voltage levels are required from a single supply line.
It is especially useful in applications that need:
- Centralized power distribution.
- Regulated low-voltage rails.
- Separation between logic, auxiliary and high-power loads.
- Protection against electrical faults.
- Cleaner wiring between subsystems.
- Easier integration with the rest of the electronics.
Main Features
- Single 28 V DC input.
- Regulated 3.3 V output rail.
- Regulated 5 V output rail.
- Regulated 12 V output rail.
- TRACO POWER DC/DC converters.
- Input protection stage.
- Reverse-polarity protection.
- Fuse protection.
- Decoupling and filtering capacitors.
- Dedicated outputs for different subsystem power rails.
- Custom KiCad symbols, footprints and 3D models.
Contributing
· Code of Conduct · Contributing Guide ·
We welcome collaboration from the aerospace and hardware community. For major changes or data inquiries, please open an issue first.
License
Copyright © 2025-2026 The BLESS Project TeamThis Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
file, You can obtain one at http://mozilla.org/MPL/2.0/.
Credits & Team
Supported by the REXUS/BEXUS Program and our generous sponsors.
Parts
30| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | TestPoint | TestPoint:TestPoint_Pad_D1.0mm | TP1, TP2, TP3, TP4, TP5 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_Pad_Via | MH1, MH2, MH3, MH4 |
| 3 | 22µ/16V | Capacitor_SMD:CP_Elec_5x5.8 | C4, C5, C6 |
| 3 | 47µ/50V | Capacitor_SMD:CP_Elec_6.3x7.7 | C1, C2, C3 |
| 3 | Fiducial | Fiducial:Fiducial_1mm_Mask2mm | FID1, FID2, FID3 |
| 3 | SS36-E3/9AT | Diode_SMD:D_SMC | D1, D2, D3 |
| 1 | 1.25A | Fuse:Fuse_Littelfuse-NANO2-451_453 | F1 |
| 1 | Molex_Conn_01x04 | Connector_Molex:Molex_Micro-Fit_3.0_43650-0415_1x04_P3.00mm_Vertical | J1 |
| 1 | TSR3-24120N | Converter_DCDC:Converter_DCDC_TRACO_TSR2-24xxN_TSR2-24xxxN_THT | U3 |
| 1 | TSR_1-2433 | Converter_DCDC:Converter_DCDC_TRACO_TSR-1_THT | U1 |
| 1 | TSR_1-2450 | Converter_DCDC:Converter_DCDC_TRACO_TSR-1_THT | U2 |
| 1 | WR-BHD_Conn_02x03_Odd_Even | Connector_IDC:IDC-Header_2x03_P2.54mm_Vertical | J4 |
| 1 | WR-BHD_Conn_02x04_Odd_Even | Connector_IDC:IDC-Header_2x04_P2.54mm_Vertical | J3 |
| 1 | WR-BHD_Conn_02x08_Odd_Even | Connector_IDC:IDC-Header_2x08_P2.54mm_Vertical | J2 |
| 1 | WR-BHD_Conn_02x17_Odd_Even | Connector_IDC:IDC-Header_2x17_P2.54mm_Vertical | J5 |
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Questions
How big is the Power Control Unit PCB PCB?
It measures 98.3 × 93.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Power Control Unit PCB use?
30 parts, built around the TSR 3-24120N, TSR 1-2433, TSR 1-2450 and 04511.25MRL. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the Power Control Unit PCB KiCad files?
From the BLESS-BEXUS/Power-Control-Unit-System-PCB repository on GitHub, at the commit this page was made from: the board is Power_Control_Unit_PCB.kicad_pcb and its schematic Power_Control_Unit_PCB.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Power Control Unit PCB design in my own project?
Its repository states no licence, so its author keeps all rights: ask BLESS-BEXUS before reusing the design.