2 layers82 × 44.8 mm
6 layers75 × 50 mm
OpenMD
oserup/OpenMD12Open Source GaN Motor Driver
- Size
- 75 × 50 mm
- Copper layers
- 6
- Thickness
- 1.6 mm
- Parts
- 187
- Nets
- 63
- Pads
- 471
- Tracks, vias
- 490, 2,406
- Pours
- 218
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 20 May 2024
- Updated
- 6 Jan 2025
Overview
OpenMD is an open-source printed circuit board by oserup, from the oserup/OpenMD repository on GitHub, published under the CERN-OHL-W-2.0 licence. It is a 6-layer board of 75 × 50 mm with 187 parts on 63 nets, routed with 490 tracks and 2,406 vias.
It is built around the INA241A2ID, UP1966E and EPC2302. Its parts include 80 capacitors, 36 resistors, 32 diodes, 7 ICs and 7 connectors. It belongs with the robots and motor control boards of this library.
Main components
3
INA241A2ID
SOIC-8-40℃~+125℃ -5V~110V 1.1MHz 150nV/℃ 166dB 2.5mA 2.7V~20V 20V/V 3uV 8V/us Bidirectional detection、Zero drift / auto-zero、Programmable output reference level ±30V SOIC-8 Current Sense Amplifiers ROHSTexas InstrumentsCurrent Sense Amplifiers
UP1966E
WLCSP-12-B(1.6x1.6)-40℃~+125℃ 120uA 2 20ns 20ns 4.5V~5.5V 4ns 8ns Half-Bridge MOSFET Under Voltage Protection WLCSP-12-B(1.6x1.6) Gate Drivers ROHSEPCGaN Transistors(GaN HEMT)
EPC2302
SMD-40℃~+150℃ 1 N-channel 1.3V 1.8mΩ@5V 100V 101A 29nC@5V 4.8nF 7pF SMD MOSFETs ROHSEPCMOSFETs
README
README.mdOpenMD
A Versatile Motor Driver powered by GaN
Operating Voltage: 7V-80V
Operating Current: 0A-70A
Max Theoretical Power: 4kW
Parts
187| Qty | Value | Footprint | References |
|---|---|---|---|
| 31 | 10uF | Capacitor_SMD:C_1210_3225Metric | C2, C3, C12, C15, C18, C19, C21, C23, C24, C26, C27, C28, C29, C31, C32, C34 +15 |
| 21 | 100nF | Capacitor_SMD:C_0603_1608Metric | C5, C10, C13, C14, C16, C17, C30, C33, C36, C38, C39, C41, C42, C44, C45, C47 +5 |
| 11 | 1uF | Capacitor_SMD:C_0805_2012Metric | C1, C11, C20, C22, C25, C70, C71, C72, C73, C74, C75 |
| 7 | 3.3V | Diode_SMD:D_SOD-323 | D7, D8, D9, D11, D21, D22, D23 |
| 7 | 5V | Diode_SMD:D_0603_1608Metric | D12, D13, D14, D15, D16, D17, D20 |
| 7 | 6V | Diode_SMD:D_SOD-323 | D18, D27, D28, D29, D30, D31, D32 |
| 6 | .85V | Diode_SMD:D_SMB | D1, D2, D3, D4, D5, D6 |
| 6 | 0 | Resistor_SMD:R_0603_1608Metric | R2, R3, R7, R8, R12, R13 |
| 6 | 1 | Resistor_SMD:R_0603_1608Metric | R1, R4, R6, R9, R11, R14 |
| 6 | 10 | Resistor_SMD:R_0603_1608Metric | R22, R24, R25, R27, R28, R30 |
| 6 | 10nF | Capacitor_SMD:C_0603_1608Metric | C49, C54, C59, C67, C68, C69 |
| 6 | C | Capacitor_SMD:C_0603_1608Metric | C56, C61, C66, C83, C84, C85 |
| 6 | EPC2302 | EPC_FETs:D0606F_100V | Q1, Q2, Q3, Q4, Q5, Q6 |
| 6 | Fiducial | Fiducial:Fiducial_0.5mm_Mask1mm | FID1, FID2, FID3, FID4, FID5, FID6 |
| 6 | R | Resistor_SMD:R_0603_1608Metric | R38, R39, R40, R41, R42, R43 |
| 5 | 10k | Resistor_SMD:R_0603_1608Metric | R17, R19, R21, R31, R34 |
| 5 | 4.7uF | Capacitor_SMD:C_0603_1608Metric | C37, C40, C43, C64, C65 |
| 4 | 240k | Resistor_SMD:R_0603_1608Metric | R16, R18, R20, R32 |
| 4 | M3 | MountingHole:MountingHole_3.2mm_M3_ISO14580_Pad_TopOnly | H1, H2, H3, H4 |
| 3 | .3m | Resistor_SMD:R_2512_6332Metric | R23, R26, R29 |
| 3 | 100V | Diode_SMD:D_0603_1608Metric | D24, D25, D26 |
| 3 | INA241A2 | Package_TO_SOT_SMD:SOT-23-8 | U8, U9, U10 |
| 3 | UP1966E | OpenMD:WLCSP1.6x1.6-12B_ECC | U1, U2, U3 |
| 2 | LOGO | OpenMD:CrabLabs | G***, G*** |
| 2 | Logo_Open_Hardware_Large | Symbol:OSHW-Symbol_8.9x8mm_SilkScreen | SYM1, SYM1 |
| 2 | M2 | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad_TopOnly | H6, H7 |
| 1 | .85V | Diode_SMD:D_SOD-123 | D10 |
| 1 | 10k NTC | Resistor_SMD:R_0603_1608Metric | TH1 |
| 1 | 22uH | Inductor_SMD:L_Abracon_ASPI-3012S | L1 |
| 1 | 82V | Diode_SMD:D_SMA | D19 |
| 1 | A | OpenMD:DIP-4_252 | J5 |
| 1 | Analog | Connector_JST:JST_SH_SM12B-SRSS-TB_1x12-1MP_P1.00mm_Horizontal | J3 |
| 1 | B | OpenMD:DIP-4_252 | J6 |
| 1 | C | OpenMD:DIP-4_252 | J7 |
| 1 | Digital | Connector_JST:JST_SH_SM08B-SRSS-TB_1x08-1MP_P1.00mm_Horizontal | J2 |
| 1 | GND | OpenMD:DIP-4_252 | J1 |
| 1 | M2 | MountingHole:MountingHole_2.2mm_M2_ISO7380_Pad_TopOnly | H5 |
| 1 | RAA211805 | Package_TO_SOT_SMD:SOT-23-5 | IC2 |
| 1 | V_{BATT} | OpenMD:DIP-4_252 | J8 |
Questions
How big is the OpenMD PCB?
It measures 75 × 50 mm and has 6 copper layers, 1.6 mm thick.
What parts does the OpenMD use?
187 parts, built around the INA241A2ID, UP1966E and EPC2302. 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 OpenMD KiCad files?
From the oserup/OpenMD repository on GitHub, at the commit this page was made from: the board is OpenMD.kicad_pcb and its schematic CurrentSensors.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the OpenMD design in my own project?
Its repository publishes it under the CERN-OHL-W-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).
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