2 layers28 × 40 mm
Power pd trigger
HeyPCB/power-kit
Six open power and charging boards: KiCad 10, JLCPCB-ready, CERN-OHL-S-2.0
17 partsCERN-OHL-S-2.0
4 layers50 × 36 mm
Power dual buck
HeyPCB/power-kitSix open power and charging boards: KiCad 10, JLCPCB-ready, CERN-OHL-S-2.0
- Size
- 50 × 36 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 34
- Nets
- 14
- Pads
- 75
- Tracks, vias
- 156, 65
- Pours
- 15
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 18 Oct 2026
- Updated
- 18 Oct 2026
Overview
Power dual buck is an open-source printed circuit board by HeyPCB, from the HeyPCB/power-kit repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 4-layer board of 50 × 36 mm with 34 parts on 14 nets, routed with 156 tracks and 65 vias.
It is built around the TPS563201DDCR, CL21A226MAQNNNE and CC0603KRX7R9BB104, with the CL31A226KAHNNNE, CL31A106KBHNNNE and SWPA4030S4R7MT among its other parts. Its parts include 13 capacitors, 6 resistors, 4 diodes, 2 ICs and 2 connectors. It belongs with the power boards of this library.
Main components
12
TPS563201DDCR
SOT-23-THIN-6-40℃~+125℃@(TJ) 1 3A 4.5V~17V 580kHz 768mV~7V Adjustable Buck Buck Built-in Yes SOT-23-THIN-6 DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
CL21A226MAQNNNE
080522uF 25V X5R ±20% 0805 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
CC0603KRX7R9BB104
0603100nF 50V X7R ±10% 0603 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMT
CL31A226KAHNNNE
120622uF 25V X5R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMTCL31A106KBHNNNE
120610uF 50V X5R ±10% 1206 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSSamsung Electro-MechanicsMultilayer Ceramic Capacitors MLCC - SMD/SMT
SWPA4030S4R7MT
SMD,4x4mm2A 3.2A 4.7uH 78mΩ ±20% SMD,4x4mm Power Inductors ROHSSunlordPower Inductors
SWPA6045S4R7MT
SMD,6x6mm26mΩ 3.3A 4.7uH 5.5A ±20% SMD,6x6mm Power Inductors ROHSSunlordPower Inductors
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
BZT52C10
SOD-123-65℃~+150℃ 1 Independent 10V 150Ω 200nA 20Ω 370mW 9.4V~10.6V SOD-123 Zener Diodes ROHSDiodes IncorporatedZener Diodes
PZ254V-11-04P
插件,P=2.54mm-40℃~+105℃ 1 1x4P 2.54mm 2.5mm 250V 3A 3mm 4P 6.1mm Black Brass Gold Square pin Through Hole Plugin,P=2.54mm Pin Headers ROHSXFCNPin Headers
SMAJ15A
DO-214AC(SMA)-65℃~+150℃ 15V 16.4A@10/1000us 18.5V 1uA 24.4V 400W@10/1000us TVS Unidirectional DO-214AC(SMA) ESD and Surge Protection (TVS/ESD) ROHSMDDESD And Surge Protection (TVS/ESD)
MX126-5.0-02P-GN01-CU-S-A
插件,P=5mm-40℃~+105℃ 1 10A 14~26 1x2P 2 2.5 2P 300V 5mm Green M2.5 Through Hole 插件,P=5mm Screw Terminal Blocks ROHSMAXScrew Terminal Blocks
README
README.mdHeyPCB Power Kit
Six small power and charging boards, each a complete KiCad 10 project with Gerbers, BOM and a CPL fitted to JLCPCB's own footprints.
| Board | What it does | Size | DRC errors / unconnected / parity |
|---|---|---|---|
| Dual Rail | 6-15 V to 5 V / 3 A + 3.3 V / 2 A | 50 x 36 mm, 4 layers | 0 / 0 / 0 |
| PD Trigger | USB-C PD sink, DIP-selected 5-20 V | 28 x 40 mm, 2 layers | 0 / 0 / 0 |
| 1S Boost | One lithium cell to 5.1 V | 28 x 30 mm, 2 layers | 0 / 0 / 0 |
| Power Mux | USB-C first, 1S cell as backup | 28 x 32 mm, 2 layers | 0 / 0 / 0 |
| USB eFuse | 5 V inline protection | 26 x 30 mm, 2 layers | 0 / 0 / 0 |
| USB-C Power Meter | Inline power monitor, Qwiic | 32 x 24 mm, 2 layers | 0 / 0 / 0 |
Not fabricated, assembled or powered. Every number in a board's README is measured by KiCad 10 on the files in its folder (report.json). Parts are LCSC-numbered and were in JLCPCB's stock on the date each README gives.
Each board folder holds kicad/ (project), fab/ (Gerbers zip, BOM, CPL, STEP, schematic PDF), media/ (renders and a design-process video) and board.json (the brief it was built from).
Designed with the HeyPCB method on KiCad 10 by heypcb-kicad's headless pipeline with Freerouting 2.4.1.
Licence
CERN-OHL-S-2.0, © 2026 heypcb.ai. See LICENSE.
Parts
34| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 22uF | Capacitor_SMD:C_0805_2012Metric | C3, C4, C7, C8, C9, C12, C13 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100nF | Capacitor_SMD:C_0603_1608Metric | C5, C6, C11 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R1, R4 |
| 2 | 22uF | Capacitor_SMD:C_1206_3216Metric | C1, C2 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C10 |
| 1 | 15k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 2.2k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 4.7uH | Inductor_SMD:L_Sunlord_SWPA4030S | L2 |
| 1 | 4.7uH | Inductor_SMD:L_Sunlord_SWPA6045S | L1 |
| 1 | 82k | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | AP63203WU-7 | Package_TO_SOT_SMD:TSOT-23-6 | U2 |
| 1 | BZT52C10 | Diode_SMD:D_SOD-123 | D1 |
| 1 | Green (3V3) | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | Green (5V) | LED_SMD:LED_0603_1608Metric | D3 |
| 1 | OUT | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | SMAJ15A | Diode_SMD:D_SMA | D2 |
| 1 | TPS563201 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
| 1 | VIN 6-15V | TerminalBlock:TerminalBlock_MaiXu_MX126-5.0-02P_1x02_P5.00mm | J1 |
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Questions
How big is the Power dual buck PCB?
It measures 50 × 36 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Power dual buck use?
34 parts, built around the TPS563201DDCR, CL21A226MAQNNNE, CC0603KRX7R9BB104 and CL31A226KAHNNNE. 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 dual buck KiCad files?
From the HeyPCB/power-kit repository on GitHub, at the commit this page was made from: the board is boards/dual-rail/kicad/power_dual_buck.kicad_pcb and its schematic boards/boost-1s/kicad/power_boost_1s.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Power dual buck design in my own project?
Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).