4 layers60 × 56.1 mm
4 layers60 × 56.1 mm
AvionicsPower
esb8/AvionicsPower2PCB of a Power Management and supply board for an Avionics stack.
- Size
- 60 × 56.1 mm
- Copper layers
- 4
- Thickness
- 1.58 mm
- Parts
- 82
- Nets
- 102
- Pads
- 337
- Tracks, vias
- 550, 117
- Pours
- 9
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 3 Jul 2025
- Updated
- 4 Aug 2025
Overview
AvionicsPower is an open-source printed circuit board by esb8, from the esb8/AvionicsPower repository on GitHub. It is a 4-layer board of 60 × 56.1 mm with 82 parts on 102 nets, routed with 550 tracks and 117 vias.
It is built around the RP2040, SN65HVD230DR and TLV62585RWTR, with the W25Q128JVSIQ, AP2112K-3.3 and TPS77533PWPR among its other parts. Its parts include 29 capacitors, 23 resistors, 9 ICs, 6 connectors and 4 diodes. It belongs with the RP2040 boards of this library.
Main components
11
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
SN65HVD230DR
SOP-8CAN TransceiversTokmas
TLV62585RWTR
VQFN-11-HR(2x3)-40℃~+125℃@(TJ) 1 1.5MHz 2.5V~5.5V 35uA 3A 600mV~5.5V Adjustable Buck Buck Built-in Yes VQFN-11-HR(2x3) DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
W25Q128JVSIQ
SOIC-8-208mil-40℃~+85℃ 100,000 cycles 120ms@(32KB) 128Mbit 133MHz 1uA 2.7V~3.6V 20 Years 3ms Power-on reset、Hardware write protection、Software write protection、Write enable latch、Absolute write protection SPI SOIC-8-208mil NOR FLASH ROHSWinbondNOR FLASH
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
TPS77533PWPR
HTSSOP-20-EP-40℃~+125℃@(Tj) 1 10V 287mV@(500mA) 3.3V 500mA 60dB@(100Hz) 85uA Fixed Over Current Protection、Over Temperature Protection Positive HTSSOP-20-EP Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
ABM8-272-T3
SMD3225-4P-40℃~+85℃ 10pF 12MHz 50Ω SMD crystal oscillator ±30ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystals
CUS10S30
SOD-323Schottky DiodesDOWO
NCE8205
SOT-23-6L-55℃~+150℃ 1.25W 1.2V 140pF 2 N-Channel 20V 37mΩ@2.5V 4A 600pF SOT-23-6L MOSFETs ROHSWuxi NCE Power SemiconductorMOSFETsX322512MSB4SI
SMD3225-4P-40℃~+85℃ 12MHz 20pF 80Ω Crystal Oscillator ±10ppm ±20ppm SMD3225-4P Crystals ROHSYXCCrystals
README
README.mdOverview
This project is a custom RP2040-based Power Distribution Board, designed for use in an avionics stack comprising three CAN-connected PCBs:
- Sensor Board
- Power Distribution Board (this board)
- GPS Board
The system is intended for high-power model rocketry, and this board’s primary role is to distribute power to the rest of the system while also managing essential subsystems such as communication, monitoring, and recovery signaling.
📡 PCB Features
- High-current 3.3 V synchronous buck converter (up to 3 A), operating at 1.5 MHz and ~95% efficiency
- Low-noise LDO with 60 dB PSRR @ 100 Hz, delivering up to 500 mA at 3.3 V
- Single-cell Li-ion/LiPo battery protection IC with over-voltage, under-voltage, and over-current protection
- CAN controller and transceiver
- RP2040 microcontroller
- USB-C interface
- Onboard status LEDs for buck converter, MCU status, and USB-C diagnostics
- External 128 Mbit W25Q128JVS flash memory
- MAX98357A I²S digital amplifier connected to a speaker for audible recovery
✅ PCB Design Criteria
This board was designed to meet the following system-level criteria:
- Stable, low-noise 3.3 V rail for analog/digital loads — supports up to 500 mA with minimal line/load regulation (target: ±0.1%)
- High-current 3.3 V rail capable of supplying up to 3 A to downstream PCBs
- Battery protection for a 1S LiPo cell, including self-recovery from under-voltage and short-circuit protection
- CAN bus communication interface to enable modular system design with multiple nodes
- Audible recovery system — implemented using the MAX98357A I²S Class-D amplifier, which drives a speaker directly from the RP2040 using digital audio
📷 Media
Schematic
PCB Layout
3D Model
Parts
82| Qty | Value | Footprint | References |
|---|---|---|---|
| 15 | 100nF | PCM_JLCPCB:C_0402 | C1, C7, C8, C9, C10, C11, C12, C13, C14, C15, C17, C22, C24, C25, C26 |
| 5 | 1kΩ | Resistor_SMD:R_0402_1005Metric | R9, R10, R17, R18, R22 |
| 4 | 15pF | PCM_JLCPCB:C_0402 | C18, C19, C28, C29 |
| 4 | 1uF | PCM_JLCPCB:C_0402 | C6, C16, C20, C21 |
| 4 | 5.1kΩ | Resistor_SMD:R_0402_1005Metric | R12, R13, R20, R21 |
| 4 | LOGO | LOGO | G***, G***, G***, G*** |
| 3 | 10uF | PCM_JLCPCB:C_0603 | C3, C4, C23 |
| 3 | Green | PCM_JLCPCB:D_0805 | D1, D2, D3 |
| 2 | 100Ω | Resistor_SMD:R_0402_1005Metric | R11, R15 |
| 2 | 200Ω | PCM_JLCPCB:R_0402 | R14, R23 |
| 2 | 27.4 | Capacitor_SMD:C_0402_1005Metric | R6, R7 |
| 2 | AO3400A | PCM_JLCPCB:Q_SOT-23 | Q1, Q2 |
| 2 | TEST PAD | TestPoint:TestPoint_Pad_1.0x1.0mm | J1, J1 |
| 1 | 0.47u | PCM_JLCPCB:L_0805 | L1 |
| 1 | 10kΩ | PCM_JLCPCB:R_0402 | R1 |
| 1 | 10kΩ | Resistor_SMD:R_0402_1005Metric | R8 |
| 1 | 10nF | PCM_JLCPCB:C_0402 | C27 |
| 1 | 10uf | PCM_JLCPCB:C_0805 | C2 |
| 1 | 120Ω | Resistor_SMD:R_0402_1005Metric | R19 |
| 1 | 150kΩ | PCM_JLCPCB:R_0402 | R25 |
| 1 | 1MΩ | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 200kΩ | PCM_JLCPCB:R_0402 | R24 |
| 1 | 22uF | PCM_JLCPCB:C_0603 | C5 |
| 1 | 2kΩ | Resistor_SMD:R_0402_1005Metric | R16 |
| 1 | 45k | PCM_JLCPCB:C_0402 | R5 |
| 1 | ABM8-272-T3 | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | X1 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | CUS10S30 | PCM_JLCPCB:D_SOD-323 | D4 |
| 1 | Conn_01x02 | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J2 |
| 1 | Conn_01x02_Pin | Connector_JST:JST_PH_B2B-PH-K_1x02_P2.00mm_Vertical | J4 |
| 1 | Conn_01x04_Pin | Connector_PinHeader_2.00mm:PinHeader_1x04_P2.00mm_Vertical | J5 |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U8 |
| 1 | MCP2515-xSO | Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm | U9 |
| 1 | NCE8205 | PCM_JLCPCB:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BR | Q3 |
| 1 | RP2040 | Package_DFN_QFN:QFN-56-1EP_7x7mm_P0.4mm_EP3.2x3.2mm | U3 |
| 1 | SN65HVD230DR | PCM_JLCPCB:SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL | U7 |
| 1 | Shenzhen Fuman Elec FM2113 | PCM_JLCPCB:SOT-23-6_L2.9-W1.6-P0.95-LS2.8-BL | U6 |
| 1 | TLV62585RWTR | TLV62585:RWT0012A | U1 |
| 1 | TPS77533PWPR | TPS77533:PWP20_3P38X2P4 | U2 |
| 1 | USB_C_Plug | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | P1 |
| 1 | W25Q128JVS | Package_SO:SOIC-8_5.3x5.3mm_P1.27mm | U5 |
| 1 | X322512MSB4SI | PCM_JLCPCB:CRYSTAL-SMD_4P-L3.2-W2.5-BL | X2 |
The 81 most common of 82 parts.
Questions
How big is the AvionicsPower PCB?
It measures 60 × 56.1 mm and has 4 copper layers, 1.58 mm thick.
What parts does the AvionicsPower use?
82 parts, built around the RP2040, SN65HVD230DR, TLV62585RWTR and W25Q128JVSIQ. 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 AvionicsPower KiCad files?
From the esb8/AvionicsPower repository on GitHub, at the commit this page was made from: the board is AvionicsPower.kicad_pcb and its schematic AvionicsPower.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the AvionicsPower design in my own project?
Its repository states no licence, so its author keeps all rights: ask esb8 before reusing the design.
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