

- Size
- 60 × 63 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 118
- Nets
- 79
- Pads
- 464
- Tracks, vias
- 679, 392
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 8 May 2025
- Updated
- 8 May 2025
Overview
Bldc sic is an open-source printed circuit board by klaus-liebler, from the klaus-liebler/esp32-bldc-controller repository on GitHub, published under the MIT licence. It is a 2-layer board of 60 × 63 mm with 118 parts on 79 nets, routed with 679 tracks and 392 vias.
It is built around the ESP32-S3-WROOM-1-N8, SN65HVD230D and SP3485EEN, with the DRV8323HRTAR, TP6841S6 and SRV05-4 among its other parts. Its parts include 46 capacitors, 23 resistors, 16 connectors, 7 ICs and 6 transistors. It belongs with the robots and motor control boards and the ESP32 boards of this library.
Main components
10ESP32-S3-WROOM-1-N8
SMD,25.5x18mm-40℃~+85℃ -98.2dBm 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA Bluetooth5.0 ESP32-S3 Chip On-board PCB Antenna UART、SPI、I2C、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi ModulesSN65HVD230D
SOIC-8-40℃~+85℃ 1 17mA 1Mbps 370uA 3V~3.6V CAN Transceiver Low-power mode、Wake-up function、ESD protection、Thermal shutdown protection、Bus fault protection、Hot-swap protection SOIC-8 CAN Transceivers ROHSTexas InstrumentsCAN TransceiversSP3485EEN
SOP-8-40℃~+85℃ 1 1 12Mbps 2.97V~3.63V 256 520uA Half-Duplex Transceiver SOP-8 RS-485 / RS-422 ICs ROHSUMWRS-485 / RS-422 ICsDRV8323HRTAR
WQFN-40-EP(6x6)-40℃~+125℃ 12uA 3 No SPI Three Phase WQFN-40-EP(6x6) Brushless DC (BLDC) Motor Driver ROHSTexas InstrumentsBrushless DC (BLDC) Motor DriverTP6841S6
SOT-23-6-40℃~+125℃ 1 4.5V~40V 800kHz 800mA Adjustable Buck Buck Built-in Yes SOT-23-6 DC-DC Converters ROHSTECH PUBLICDC-DC ConvertersSRV05-4
SOT-23-6L-55℃~+150℃ 15V 1pF 4A 5V 5uA 6V 80W ESD Four channels IEC 61000-4-2、IEC 61000-4-5 Unidirectional SOT-23-6L ESD and Surge Protection (TVS/ESD) ROHShongjiachengESD And Surge Protection (TVS/ESD)K12
SOD-123FL-55℃~+125℃ 1 Independent 1A 20V 30A 500uA@20V 550mV@1A SOD-123FL Schottky Diodes ROHSDDFSchottky DiodesNUP2105
SOT-23-40℃~+125℃ 100nA 2 24V 30pF 32V 350W@8/20us 44V 8A@8/20us Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSShikuesESD And Surge Protection (TVS/ESD)PSM712
SOT-23-55℃~+125℃ 10V、26V 12A 1uA 2 400W 45pF、75pF 7.5V、13.3V 7V、12V Bidirectional ESD IEC 61000-4-2、IEC 61000-4-5、IEC 61000-4-4 SOT-23 ESD and Surge Protection (TVS/ESD) ROHSDOWOESD And Surge Protection (TVS/ESD)K22
SOD-123FLSchottky DiodesDoeshare
README
pcb/README.mdesp32-bldc - a bldc controller for stationary applications
-
Main components are ESP32-S3, DRV8323HRTAR, 6x IRF7480
-
Intgrated synchronous step down converter
-
CAN-BUS, RS485 (both with switchable termination)
-
USB-C, I2C
-
All ceramic capacitors
-
Power-LED
-
Reset Button, Boot Button
-
Thermal sensor
-
breakable connector area
-
optional MT6816 at the bottom PCB side
-
parts available at jlcpcb, (5pcs = 113€)
-
various GPIO; especially for external magnetic sensor
-
desinged with KiCad with https://simplefoc.com/ in mind
-
Four mounting holes
-
dimensions 60mm x 52mm (63mm with big connectors)
-
currently COMPLETELY untested

Parts
118| Qty | Value | Footprint | References |
|---|---|---|---|
| 31 | 10u/50V | liebler_PASSIVES:C_1206_3216Metric_smaller | C1, C2, C3, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C28, C29 +15 |
| 6 | IRF7480M | Package_DirectFET:DirectFET_ME | Q1, Q2, Q3, Q4, Q5, Q6 |
| 6 | u1 | Capacitor_SMD:C_0402_1005Metric | C22, C27, C33, C35, C41, C42 |
| 4 | 10k | Resistor_SMD:R_0402_1005Metric | R9, R12, R18, R30 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3_DIN965 | H1, H2, H3, H4 |
| 3 | R001 | Resistor_SMD:R_2512_6332Metric | R1, R2, R3 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R25, R26 |
| 2 | 22u | Capacitor_SMD:C_0603_1608Metric | C36, C37 |
| 2 | 4k7 | Resistor_SMD:R_0402_1005Metric | R14, R15 |
| 2 | 5k1 | Resistor_SMD:R_0402_1005Metric | R4, R5 |
| 2 | Conn_01x06 | Connector_JST:JST_XH_S6B-XH-A_1x06_P2.50mm_Horizontal | J9, J10 |
| 2 | K12 | Resistor_SMD:R_1206_3216Metric_Pad1.30x1.75mm_HandSolder | R10, R27 |
| 2 | ON TERM | liebler_MECH:Switch_SS12D00 | SW1, SW3 |
| 2 | u1/50V | Capacitor_SMD:C_0603_1608Metric | C21, C26 |
| 1 | 10uH | Inductor_SMD:L_Abracon_ASPI-0630LR | L1 |
| 1 | 15k | Resistor_SMD:R_0402_1005Metric | R7 |
| 1 | 18k | Resistor_SMD:R_0402_1005Metric | R24 |
| 1 | 1k | Resistor_SMD:R_0402_1005Metric | R29 |
| 1 | 1u/50V | Capacitor_SMD:C_0603_1608Metric | C23 |
| 1 | 1u/6V3 | Capacitor_SMD:C_0402_1005Metric | C25 |
| 1 | 22k | Resistor_SMD:R_0402_1005Metric | R28 |
| 1 | 22uF | Capacitor_SMD:C_0603_1608Metric | C40 |
| 1 | 47k | Resistor_SMD:R_0402_1005Metric | R6 |
| 1 | 47n/50V | Capacitor_SMD:C_0603_1608Metric | C24 |
| 1 | 48V | liebler_CONN:Steckzunge_4_8mm | J14 |
| 1 | 48V | liebler_CONN:SolderWirePad_1x01_SMD_3x5mm | J4 |
| 1 | 75k | Resistor_SMD:R_0402_1005Metric | R19 |
| 1 | A | liebler_CONN:Steckzunge_4_8mm | J11 |
| 1 | A | liebler_CONN:SolderWirePad_1x01_SMD_3x5mm | J1 |
| 1 | B | liebler_CONN:Steckzunge_4_8mm | J12 |
| 1 | B | liebler_CONN:SolderWirePad_1x01_SMD_3x5mm | J2 |
| 1 | BOOT | Button_Switch_SMD:SW_SPST_TL3342 | SW4 |
| 1 | C | liebler_CONN:SolderWirePad_1x01_SMD_3x5mm | J3 |
| 1 | C | liebler_CONN:Steckzunge_4_8mm | J13 |
| 1 | DRV8323HRTAR | Package_DFN_QFN:Texas_S-PVQFN-N40_EP4.15x4.15mm_ThermalVias | U1 |
| 1 | ESP32-S3-WROOM-1 | Espressif:ESP32-S3-WROOM-1 | U2 |
| 1 | EXT_MAG | Connector_Phoenix_MC:PhoenixContact_MC_1,5_5-G-3.81_1x05_P3.81mm_Horizontal | J16 |
| 1 | EXT_MAG | Connector_JST:JST_XH_S6B-XH-A_1x06_P2.50mm_Horizontal | J6 |
| 1 | GHA | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP1 |
| 1 | GHB | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP3 |
| 1 | GHC | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP5 |
| 1 | GLA | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP2 |
| 1 | GLB | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP4 |
| 1 | GLC | TestPoint:TestPoint_THTPad_D1.0mm_Drill0.5mm | TP6 |
| 1 | GND | liebler_CONN:SolderWirePad_1x01_SMD_3x5mm | J5 |
| 1 | GND | liebler_CONN:Steckzunge_4_8mm | J15 |
| 1 | MT6816 | Package_SO:SO-8_3.9x4.9mm_P1.27mm | U4 |
| 1 | NUP2105 | Package_TO_SOT_SMD:SOT-23_Handsoldering | D6 |
| 1 | PROG | liebler_CONN:IDC_2x03_P1.27mm_Vertical | J7 |
| 1 | PSM712 | liebler_SEMICONDUCTORS:SOT-23_smaller_withoutSilkscreen | D1 |
| 1 | Power | liebler_OPTO:LED_0603_1608Metric | D7 |
| 1 | RESET | Button_Switch_SMD:SW_SPST_TL3342 | SW2 |
| 1 | SN65HVD230 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U6 |
| 1 | SP3485 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U7 |
| 1 | SRV05-4 | Package_TO_SOT_SMD:SOT-23-6 | U5 |
| 1 | TP6841S6 | Package_TO_SOT_SMD:TSOT-23-6 | U3 |
| 1 | Thermistor | Resistor_THT:R_Axial_DIN0204_L3.6mm_D1.6mm_P1.90mm_Vertical | TH1 |
| 1 | USB_C_Receptacle_USB2.0 | Connector_USB:USB_C_Receptacle_HRO_TYPE-C-31-M-12 | J8 |
| 1 | k1 | Resistor_SMD:R_0402_1005Metric | R11 |
| 1 | k22 | Resistor_SMD:R_0402_1005Metric | R13 |
| 1 | u1 | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C34 |
The 117 most common of 118 parts.
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Questions
How big is the Bldc sic PCB?
It measures 60 × 63 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bldc sic use?
118 parts, built around the ESP32-S3-WROOM-1-N8, SN65HVD230D, SP3485EEN and DRV8323HRTAR. 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 Bldc sic KiCad files?
From the klaus-liebler/esp32-bldc-controller repository on GitHub, at the commit this page was made from: the board is pcb/bldc_sic.kicad_pcb and its schematic pcb/bldc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bldc sic design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).