P1 tx
About the P1 tx PCB
P1 tx is an open source STM32 PCB design by Deco025, published on GitHub under the CERN-OHL-S-2.0 license. It is a 4-layer board measuring 82 × 60 mm, with 88 components from 44 distinct parts.
Its main chip is the STM32G474CETx, from the STM32 family. Other key parts include the INA240A2D, UCC27211, LMR16006X and TC2185-3.3. By type, the board carries 43 capacitors, 20 resistors, 7 ICs, 4 transistors, 4 connectors and 4 diodes.
It belongs with the power & battery and iot & wireless designs in this gallery.
From the project
Resonare: open-source 120 W LCC-S resonant wireless charger, transmitter and receiver boards (KiCad 10, 4-layer)
第 2 层为整层地、第 3 层为整层电源（TX：VBUS；RX：VRECT），图中只画出两个外层。
- 主要指标 - 系统结构 - 仓库结构 - 打开工程 - 打样与装配 - 设计要点 - 安全提示 - 许可证 - 致谢
- 发射端过流保护：INA240 输出同时进 ADC 和片内比较器（COMP1），比较器直接触发 HRTIM 故障关断。 - 接收端过流保护：充电电流进 ADC 和片内比较器，比较器阈值用片内 1.19 V 基准，对应约 11.9 A。 - 防倒灌：同步 Buck 上管的体二极管会让超级电容反向放电到 VRECT，所以输出端串联 LM74700 + N-MOS 理想二极管，由 MCU 的 CHGEN 控制。 - 接收端的辅助电源只从 VRECT 取电。小车离开发射线圈后，接收端 MCU 掉电，Buck 停止，理想二极管关断。 - 发射与接收的地完全隔离（GND / GNDRX）。
Main components on the P1 tx
P1 tx bill of materials (BOM)
88 components, 44 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | INA240A2D | SOIC-8_3.9x4.9mm_P1.27mm | U101 |
| 2 | UCC27211 | HVSON-8-1EP_4x4mm_P0.8mm_EP2.2x3.1mm | U201, U202 |
| 2 | LMR16006X | SOT-23-6 | U401, U402 |
| 1 | TC2185-3.3 | SOT-23-5 | U403 |
| 1 | STM32G474CETx | LQFP-48_7x7mm_P0.5mm | U501 |
| 4 | BSC070N10NS3G | Infineon_PG-TDSON-8_6.15x5.15mm | Q1, Q2, Q3, Q4 |
| 1 | 8MHz | Crystal_SMD_3225-4Pin_3.2x2.5mm | Y501 |
| 1 | XT30_24V_IN | AMASS_XT30PW-M_1x02_P2.50mm_Horizontal | J101 |
| 1 | TX_COIL | TerminalBlock_Phoenix_MKDS-1,5-2-5.08_1x02_P5.08mm_Horizontal | J301 |
| 1 | SWD | PinHeader_1x05_P2.54mm_Vertical | J501 |
| 1 | UART | PinHeader_1x04_P2.54mm_Vertical | J502 |
| 1 | 10A | Fuse_Littelfuse-NANO2-451_453 | F101 |
| 1 | SMAJ28A | D_SMA | D101 |
| 2 | SS110 | D_SMA | D401, D402 |
| 1 | LED_G | LED_0603_1608Metric | D501 |
| 1 | 600R@100MHz | L_0603_1608Metric | FB501 |
| 1 | 6uH | L_12x12mm_H8mm | L301 |
| 1 | 47uH | L_Taiyo-Yuden_NR-50xx | L401 |
| 1 | 33uH | L_Taiyo-Yuden_NR-50xx | L402 |
| 1 | 220uF | CP_Elec_10x10.5 | C1 |
Show 24 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 4.7uF | C_1210_3225Metric | C2, C3 |
| 3 | 10uF | C_1210_3225Metric | C101, C401, C406 |
| 15 | 100nF | C_0603_1608Metric | C102, C105, C202, C205, C402, C403, C405, C407 +7 |
| 1 | 1nF | C_0603_1608Metric | C104 |
| 2 | 2.2uF | C_0805_2012Metric | C201, C204 |
| 2 | 220nF | C_0805_2012Metric | C203, C206 |
| 2 | 100nF | C_1812_4532Metric | C301, C302 |
| 1 | 3.3nF | C_1812_4532Metric | C303 |
| 1 | 82nF | C_1812_4532Metric | C304 |
| 1 | 5.6nF | C_1812_4532Metric | C305 |
| 2 | 22uF | C_1210_3225Metric | C404, C409 |
| 4 | 1uF | C_0603_1608Metric | C411, C413, C506, C508 |
| 3 | 10nF | C_0603_1608Metric | C412, C507, C509 |
| 1 | 4.7uF | C_0805_2012Metric | C505 |
| 2 | 15pF | C_0603_1608Metric | C510, C511 |
| 4 | 10R | R_0603_1608Metric | R1, R2, R3, R4 |
| 8 | 10k | R_0603_1608Metric | R6, R7, R8, R9, R104, R403, R406, R501 |
| 1 | 2m | R_Shunt_Vishay_WSK2512_6332Metric_T1.19mm | R101 |
| 1 | 100 | R_0603_1608Metric | R102 |
| 1 | 150k | R_0603_1608Metric | R103 |
| 2 | 100k | R_0603_1608Metric | R401, R404 |
| 1 | 147k | R_0603_1608Metric | R402 |
| 1 | 54.9k | R_0603_1608Metric | R405 |
| 1 | 1k | R_0603_1608Metric | R502 |
P1 tx design files
The KiCad project lives in the Deco025/resonare repository on GitHub; these links point at the commit this page was built from.
- Layoutp1_tx/p1_tx.kicad_pcb
- Schematicp1_tx/p1_tx.kicad_sch
- BOMp1_tx/fab/p1_tx-bom.csv
P1 tx: common questions
What microcontroller does the P1 tx use?
The P1 tx is built around the STM32G474CETx, from the STM32 family.
How big is the P1 tx PCB?
The P1 tx measures 82 × 60 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the P1 tx?
88 components, from 44 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 P1 tx design files?
From the Deco025/resonare 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 P1 tx design in my own project?
Yes, under the terms of its CERN-OHL-S-2.0 license, which Deco025 chose for the repository.
Can I test firmware for the P1 tx 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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