4 layers200 × 110 mm
2 layers65 × 56.5 mm
Dcdchat
KPI-Rover/rpi-power-hat1Power hat for RPI
- Size
- 65 × 56.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 52
- Pads
- 152
- Tracks, vias
- 168, 144
- Pours
- 7
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 1 Jan 2025
- Updated
- 16 Jul 2025
Overview
Dcdchat is an open-source printed circuit board by KPI-Rover, from the KPI-Rover/rpi-power-hat repository on GitHub. It is a 2-layer board of 65 × 56.5 mm with 42 parts on 52 nets, routed with 168 tracks and 144 vias.
It is built around the AP64500SP, DMMT5401 and M2.5. Its parts include 12 resistors, 8 capacitors, 6 diodes, 6 connectors and 2 ICs.
Main components
3
AP64500SP
SO-8-EP-40℃~+85℃ 1 100kHz~2.2MHz 25uA 3.8V~40V 5A 800mV~39V Adjustable Buck Built-in Overcurrent Protection、Light load efficient mode、Cycle-by-cycle current limiting、Frequency synchronization、Hiccup current limiting、External compensation、EMI optimization (spread spectrum) Step-down type Yes SO-8-EP DC-DC Converters ROHSDiodes IncorporatedDC-DC Converters
DMMT5401
SOT-26(SC74R)-55℃~+150℃ 150V 2 PNP 200mA 200mV 300MHz 300mW 50uA 5V 60 PNP SOT-26(SC74R) Bipolar (BJT) ROHSDiodes IncorporatedBipolar (BJT)M2.5
-0.45mm 2.5mm 2mm 5mm DIN934 Hex M2.5X0.45 Nickel plated Silver white - Hexagonal nutsShuntianHex Nut
README
README.mdRPI Power HAT
In development! Not verified!
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 5 | 330 | Resistor_SMD:R_0805_2012Metric | R8, R11, R12, R13, R14 |
| 4 | BLUE | LED_SMD:LED_0805_2012Metric | D3, D4, D5, D6 |
| 4 | M2.5 | MountingHole:MountingHole_2.7mm_M2.5_Pad | MK1, MK2, MK3, MK4 |
| 3 | 22 uF | Capacitor_SMD:C_1206_3216Metric | C6, C7, C8 |
| 2 | 47k | Resistor_SMD:R_0805_2012Metric | R1, R7 |
| 2 | Conn_01x04_Male | Connector_JST:JST_PH_B4B-PH-K_1x04_P2.00mm_Vertical | J3, J5 |
| 2 | HSBA100P04_C2987717 | HSBA100P04:DFN-8_L5.7-W5.1-P1.27-LS6.1-BL-1 | Q1, Q2 |
| 2 | Screw_Terminal_01x02 | DB127V-5.08-2P-GN-S:CONN-TH_2P-P5.08 | J1, J2 |
| 1 | 100nF | Capacitor_SMD:C_0805_2012Metric | C3 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric | C1 |
| 1 | 120k | Resistor_SMD:R_0805_2012Metric | R4 |
| 1 | 16k | Resistor_SMD:R_0805_2012Metric | R3 |
| 1 | 2.7nF | Capacitor_SMD:C_0805_2012Metric | C2 |
| 1 | 200k | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | 22.1k | Resistor_SMD:R_0805_2012Metric | R5 |
| 1 | 3.3uH | HX_CYA1050-3.3UH:IND-SMD_L11.6-W10.1 | L1 |
| 1 | 39pF | Capacitor_SMD:C_0805_2012Metric | C4 |
| 1 | 47pF | Capacitor_SMD:C_0805_2012Metric | C5 |
| 1 | AP64500 | ultralibAP64500:AP64500SP-13 | U1 |
| 1 | Conn_01x03_Male | Connector_JST:JST_PH_B3B-PH-K_1x03_P2.00mm_Vertical | J4 |
| 1 | Conn_02x20_Odd_Even | Connector_PinSocket_2.54mm:PinSocket_2x20_P2.54mm_Vertical | P1 |
| 1 | DMMT5401 | Package_TO_SOT_SMD:SOT-23-6 | U2 |
| 1 | GREEN | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | JTJ-USB-AF-08 | 902-131A1011D10100:USB-A-TH__USB-AF-90 | USB1 |
| 1 | SMF5V0A | Diode_SMD:D_SMF | D1 |
Similar boards
- 4 layers96 × 60 mm
Mainboard-2023
luhbots/luhsoccer_electronics
The eletronics projects of our robots and basestation.
212 parts2 - 2 layers70 × 82.5 mm
AMP PCBv3
Autonomous-Motorsports-Purdue/AMP_PCBv3
Files relating to version 3 of the PCB for AMP kart
86 partsMIT - 6 layers160 × 136 mm
Serie
npgo22/Serie
The board itself is based around an STM32H723, the fastest microcontroller supported by Klipper at the moment.
549 parts - 4 layers90 × 90 mm
01 2x30w audio amp
tomek-szczesny/byos_m2
Build Your Own System - a collection of stackable add-ons
103 parts - 4 layers200 × 100 mm
Heteromycin
hasenbanck/heteromycin
A 3D printer board using a powerfull STM32 MCU, TMC5160/TMC2160 driver and a Raspberry Pi or compatible SBC
373 parts40 - 2 layers65 × 56.5 mm
- 2 layers128.8 × 110 mm
Questions
How big is the Dcdchat PCB?
It measures 65 × 56.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dcdchat use?
42 parts, built around the AP64500SP, DMMT5401 and M2.5. 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 Dcdchat KiCad files?
From the KPI-Rover/rpi-power-hat repository on GitHub, at the commit this page was made from: the board is kicad/dcdchat.kicad_pcb and its schematic kicad/dcdchat.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dcdchat design in my own project?
Its repository states no licence, so its author keeps all rights: ask KPI-Rover before reusing the design.