4 layers57 × 25.9 mm
2 layers54 × 29.3 mm
complete bldc motor driver for drones
- Size
- 54 × 29.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 74
- Nets
- 75
- Pads
- 287
- Tracks, vias
- 546, 107
- Pours
- 8
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 11 Mar 2025
- Updated
- 22 Mar 2025
Overview
Bldc is an open-source printed circuit board by mayankpatel97, from the mayankpatel97/bldc-driver repository on GitHub. It is a 2-layer board of 54 × 29.3 mm with 74 parts on 75 nets, routed with 546 tracks and 107 vias.
It is built around the IR2101PBF, BSC13DN30NSFD and LL4148. Its parts include 27 resistors, 16 capacitors, 6 ICs, 6 transistors and 4 diodes. It belongs with the robots and motor control boards and the STM32 boards of this library.
Main components
3
IR2101PBF
PDIP-8-40℃~+125℃ 100ns 10V~20V 130mA 150ns 150uA 160ns 2 270mA 50ns Half-Bridge IGBT、MOSFET Under Voltage Protection PDIP-8 Gate Drivers ROHSInfineon TechnologiesGate Drivers
BSC13DN30NSFD
TDSON-8(5x6)-55℃~+175℃ 1 N-channel 102pF 130mΩ@10V 150W 16A 2.45nF 300V 30nC@10V 4V 5.4pF N-Channel ±20V TDSON-8(5x6) MOSFETs ROHSInfineon TechnologiesMOSFETs
LL4148
LL-341 Independent 1V@10mA 200mA 4A 4ns 500mW 5uA@75V 75V LL-34 Switching Diodes ROHSMDDSwitching Diodes
README
README.mdBLDC Driver
Overview
This project is an open-source BLDC motor driver designed for drone applications. It implements a sensorless control method using Back EMF for efficient and precise motor control.
Motor Control Methods
There are multiple ways to drive a BLDC motor. The three most common methods are:
-
Hall Sensor-Based Control
- Uses hall effect sensors in the motor to detect rotor position.
- Suitable for applications requiring high precision.
-
Back EMF-Based Control (Sensorless)
- Most common in drone ESCs (Electronic Speed Controllers).
- Detects rotor position by measuring Back EMF voltage on the floating phase.
- Eliminates the need for sensors, reducing cost and complexity.
-
Power Control Mode
- Uses shunt resistors to monitor current in each phase.
- Enables precise torque and power control.
- Required for advanced techniques like Field-Oriented Control (FOC).
Current Implementation
- Control Method: Back EMF sensing (sensorless)
- Target Application: Drone ESC
Future Enhancements
- CAN Bus Interface for communication
- UART Interface for debugging and configuration
- In the next varient, one board would have the driver for all the 4 motors required for quad copter.
PCB information
- Generated gerber files are in gerber folder of the project directory
- PCB file size: 54x29 mm.
Parts
74| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 10uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C5, C14, C16, C17 |
| 7 | 33K | Resistor_SMD:R_0603_1608Metric | R17, R19, R21, R22, R24, R25, R27 |
| 6 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C4, C9, C11, C12, C13, C15 |
| 6 | 10R | Resistor_SMD:R_0603_1608Metric | R1, R2, R3, R4, R5, R6 |
| 6 | BSC13DN30NSFD | Package_TO_SOT_SMD:TDSON-8-1 | Q1, Q2, Q7, Q8, Q9, Q10 |
| 4 | 4K7 | Resistor_SMD:R_0603_1608Metric | R9, R20, R23, R26 |
| 4 | SP | TestPoint:TestPoint_Pad_3.0x3.0mm | TP6, TP7, TP8, TP9 |
| 3 | 10K | Resistor_SMD:R_0603_1608Metric | R7, R18, R28 |
| 3 | 10nF | Capacitor_SMD:C_0603_1608Metric | C7, C8, C10 |
| 3 | C | TestPoint:TestPoint_Pad_D1.0mm | TP10, TP11, TP12 |
| 3 | IR2101 | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3, U4 |
| 3 | LL4148 | Diode_SMD:D_MiniMELF | D1, D2, D3 |
| 2 | R_US | Resistor_SMD:R_0603_1608Metric | R12, R13 |
| 1 | 1K | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 200K | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 20K | Resistor_SMD:R_0603_1608Metric | R14 |
| 1 | 20R | Resistor_SMD:R_0603_1608Metric | R11 |
| 1 | 4R7 | Inductor_SMD:L_Neosid_SM-PIC0512H | L1 |
| 1 | 75K | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | A | _MAYANK:SOLDERPAD6x4 | TP1 |
| 1 | B | _MAYANK:SOLDERPAD6x4 | TP2 |
| 1 | C | _MAYANK:SOLDERPAD6x4 | TP3 |
| 1 | Conn_01x05 | Connector_PinHeader_2.00mm:PinHeader_1x05_P2.00mm_Vertical | J1 |
| 1 | Conn_01x06 | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J3 |
| 1 | GND | _MAYANK:SOLDERPAD6x4 | TP5 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | LED | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | MP2315SGJ-P | _MAYANK:MP2315SGJ | IC1 |
| 1 | STM32L431CCTx | Package_QFP:LQFP-48_7x7mm_P0.5mm | U5 |
| 1 | VIN | _MAYANK:SOLDERPAD6x4 | TP4 |
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Questions
How big is the Bldc PCB?
It measures 54 × 29.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Bldc use?
74 parts, built around the IR2101PBF, BSC13DN30NSFD and LL4148. 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 KiCad files?
From the mayankpatel97/bldc-driver repository on GitHub, at the commit this page was made from: the board is hw/bldc/bldc.kicad_pcb and its schematic hw/bldc/bldc.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Bldc design in my own project?
Its repository states no licence, so its author keeps all rights: ask mayankpatel97 before reusing the design.