4 layers57 × 22.5 mm
NB3 hindbrain
NoBlackBoxes/LastBlackBox
A course for brains interested in brains (not tools interested in tools)
147 parts69
2 layers24.4 × 35.8 mm
RotoPD Pro
CentyLab/RotoPD_Pro13Repo for RotoPD Pro hardware and documentation
- Size
- 24.4 × 35.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 50
- Nets
- 40
- Pads
- 196
- Tracks, vias
- 404, 103
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 15 Apr 2026
- Updated
- 10 Aug 2026
Overview
RotoPD Pro is an open-source printed circuit board by CentyLab, from the CentyLab/RotoPD_Pro repository on GitHub. It is a 2-layer board of 24.4 × 35.8 mm with 50 parts on 40 nets, routed with 404 tracks and 103 vias.
It is built around the XRS40N10D, TXS0102DCUR and RUM001L02T2CL, with the TPD4E05U06DQAR and U263-163N-4GS1735 among its other parts. Its parts include 15 capacitors, 13 resistors, 7 ICs, 5 diodes and 4 connectors.
Main components
5
XRS40N10D
PDFN-8L(3.3x3.3)-55℃~+150℃ 1 N-channel 1.208nF 1.7V 100V 10mΩ@10V 11.3pF 144pF 22.7nC@10V 40A 67.5W N-Channel PDFN-8L(3.3x3.3) MOSFETs ROHSXNRUSEMIMOSFETs
TXS0102DCUR
VSSOP-8-40℃~+85℃ 1 1.65V~3.6V 2 2.3V~5.5V 24Mbps Auto Direction Detection Bidirectional Push-Pull、Open-drain VSSOP-8 Translators, Level Shifters ROHSTexas InstrumentsTranslators, Level Shifters
RUM001L02T2CL
SOT-723-55℃~+150℃ 1 N-channel 1.7pF 100mA 150mW 1V 20V 3.3pF 7.1pF 9Ω@1.5V N-Channel SOT-723 MOSFETs ROHSROHM SemiconductorMOSFETs
TPD4E05U06DQAR
USON-10-40℃~+125℃ 0.5pF 10nA 14V 2.5A@8/20us 40W@8/20us 5.5V 6.5V ESD Four channels IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 Unidirectional USON-10(1x2.5) ESD and Surge Protection (TVS/ESD) ROHSTexas InstrumentsESD Protection Devices
U263-163N-4GS1735
SMD-25℃~+85℃ 1 10000 times 16P 50V 5A 7.35mm Female Surface Mount, Right Angle Type-C SMD USB Connectors ROHSXKB ConnectionUSB Connectors
README
Readme.mdRotoPD Pro - USB-C PD 3.1 Breakout I2C 240W
Related Links
You can install the libraries directly on ArduinoIDE. Library version 1.1.0 and later will support RotoPD Pro
Description
While traditional power adapters can provide a variety of current but fixed to 5V output, our RotoPD Pro leverages advanced power delivery protocols to achieve a versatile output range — 4.5V to 48V at 240W max. The breakout board use a stand alone Power Delivery Sink controller to negotiate with your modern charger and provide different output voltage.
Centylab's RotoPD Pro can unlock more advance mode in your USB-C power supplies like Programmable Power Supply (PPS) and Adjustable Voltage Supply (AVS), to provide even more granular voltage adjustment. The RotoPD Pro simplifies power negotiation with USB-C adapters, handling the complex process of establishing power delivery contracts. The controller does all the heavy lifting of power negotiation and provides an easy way to configure over I2C, free your micro-controller from the complicated USB-C PD protocol.
To config the board, you will need an I2C bus. The board integrates seamlessly into the Qwiic and STEMMA QT ecosystems, no soldering is required. Unlike the previous version, the board only work with 3.3V I2C logic voltage.
To make it even easier to use, RotoPD Pro includes a built-in buck converter that efficiently steps down USB-C VBUS power to a stable 5V output, making it perfect for powering microcontrollers, sensors, and other low-voltage components in your project.
Requirements for AVS
To ultilize AVS power profile, you will need a powerbank or charger that has AVS profile and a 240W USB-C cable. Here are some chargers that we found support AVS profile.
Specification
- Input and output voltage range of 48V at 5A max
- On board buck for 5V output at 1A max, 0.4A continuous
- Support Qwiic or STEMMA QT connector with 3.3V logic
- Support PD3.1 EPR/AVS Up to 48V and SPR/PPS Up to 21V
- Certified USB PD3.1 v1.6 TID: 10062
- Integrated ESD and flyback diode protection
- Integrated NTC temperature monitoring
- On board VBUS switch (back-to-back NMOS)
- Current sensing from 0 to 5 A at ±2% accuracy up to 60C
Pinout
Schematic
Demo
AVSCycle example with Sparkfun Pro Micro ESP32-C3. We are requesting AVS profile from 15V to 48V.
Parts
50| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 100n | Capacitor_SMD:C_0402_1005Metric | C2, C3, C7, C8, C10, C11, C12, C15 |
| 5 | 5.1k | Resistor_SMD:R_0402_1005Metric | R1, R2, R7, R13, R15 |
| 2 | 100k | Resistor_SMD:R_0402_1005Metric | R6, R8 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C9, C14 |
| 2 | 22u | Capacitor_SMD:C_1210_3225Metric | C5, C13 |
| 2 | 4.7u | Capacitor_SMD:C_1210_3225Metric | C1, C6 |
| 2 | MountingHole | MountingHole:MountingHole_2.7mm_M2.5_DIN965_Pad_TopBottom | H1, H2 |
| 2 | RED | LED_SMD:LED_0603_1608Metric | D1, D5 |
| 2 | XRS40N10D | Transistor_MOSFET:DFN-8(3.3x3.3) | U3, U6 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 100n | Resistor_SMD:R_0402_1005Metric | C4 |
| 1 | 10k | Resistor_SMD:R_0402_1005Metric | R14 |
| 1 | 18k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R4 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 3.3uH | Inductor_SMD:L_APV_APH0530 | L1 |
| 1 | 5m | Resistor_SMD:R_0805_2012Metric | R9 |
| 1 | AP33772S | Interface_USBC:QFN-24-1EP_4x4mm_P0.5mm_EP2.6x2.6mm | U5 |
| 1 | Conn_01x08 | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J4 |
| 1 | D_Schottky | Diode_SMD:D_SOD-123 | D6 |
| 1 | D_TVS | Diode_SMD:D_SOD-123F | D2 |
| 1 | INA238 | Package_SO:VSSOP-10_3x3mm_P0.5mm | U4 |
| 1 | LM74502DDFR | Package_TO_SOT_SMD:TSOT-23-8 | U1 |
| 1 | LMR51635YDDCR | Package_TO_SOT_SMD:TSOT-23-6 | U2 |
| 1 | LOGO | Logo:CentyLab_logo | G*** |
| 1 | QWIIC | Connector_JST:JST_SH_SM04B-SRSS-TB_1x04-1MP_P1.00mm_Horizontal | J2 |
| 1 | RUM001L02T2CL | Package_TO_SOT_SMD:SOT-723 | Q1 |
| 1 | Screw_Terminal_5mm | TerminalBlock_Phoenix:TerminalBlock_Phoenix_MKDS-1,5-2_1x02_P5.00mm_Horizontal | J3 |
| 1 | TPD4E05U06DQAR | Diode_TVS:SON50P100X255X50-10N | D4 |
| 1 | TXS0102DCUR | Package_SO:VSSOP-8_2.3x2mm_P0.5mm | U7 |
| 1 | Thermistor_NTC | Resistor_SMD:R_0402_1005Metric | TH1 |
| 1 | U263-163N-4GS1735 | Connector_USBC:USB_C_GSwitch | J1 |
Questions
How big is the RotoPD Pro PCB?
It measures 24.4 × 35.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the RotoPD Pro use?
50 parts, built around the XRS40N10D, TXS0102DCUR, RUM001L02T2CL and TPD4E05U06DQAR. 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 RotoPD Pro KiCad files?
From the CentyLab/RotoPD_Pro repository on GitHub, at the commit this page was made from: the board is Hardware/RotoPDPro.kicad_pcb and its schematic Hardware/RotoPDPro.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the RotoPD Pro design in my own project?
Its repository states no licence, so its author keeps all rights: ask CentyLab before reusing the design.
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