BLDC motor controller Specification

• BLDC Motor Controller Hardware General Description:

  • Operating voltage range: 12V - 44V.
  • Built-in bulk capacitance (200µF) for stable motor control and power supply. External precharge circuit required when connecting multiple boards.
  • Multiple voltage rails (3.3V, 3.3VA, 5V, 12V) for stable power supply.
  • Field-Oriented Control (FOC) for BLDC motor operation.
  • Current handling: 30A continuous, 100A peak.
  • Compatible with multiple BLDC motor types.
  • Supports RS485 and CAN communication protocols.
  • Hall sensors for closed-loop control.
  • Temperature monitoring for motor and MOSFETs.
  • Motor cooling capability.
  • Status indicator LEDs.

• Components:

  • Buck converter: LMR36506-Q1 - Converts 6S battery voltage to 5V and 12V, providing 600mA for fan and external peripherals.
  • Buck converter: TPS62172 - Converts 5V to 3.3V system voltage with 500mA output.
  • LDO: LP2992 - Converts 5V to 3.3V analog voltage with 250mA maximum output.
  • MCU: STM32G474RET6 - Low-power, high-performance MCU optimized for battery-powered applications.
  • Motor controller: DRV8353 - Advanced motor control IC with high current capability, controlling N-Channel MOSFETs.
  • N-Channel MOSFETs: TPW1R306PL,L1Q - Two MOSFETs per channel.
  • NTC: NTCS0402E3473FXT - Temperature sensor for MOSFETs.
  • NTC: TBD - Temperature sensor for motor.
  • Encoders: ASS5047P & AS5048B - Commutation and disambiguation encoders.
  • CAN transceiver: TCAN334GDCNT.
  • RS485 transceiver: SP3494.
  • Cooling fan PWM driver: DGD0216.
  • Debug LEDs: Two status indicators (red and green) for user feedback.
  • Power connector: 2× XT60.
  • Input connectors: One motor temperature sensing connector.
  • Output connectors: One 3-pin motor phase connector, one cooling connector.
  • I/O connectors: Two encoder connectors, two 3-pin CAN connectors, two 3-pin RS485 connectors, one SWD connector for debugging and firmware updates.

  STM32-based Firmware

  • Uses STM32 HAL library for efficient development.
  • Implemented in C++ to manage project complexity.
  • Class-based driver implementation for each device.
  • Separate classes for control algorithms including PID.
  • FreeRTOS implementation for task management.
  • Documented with block diagrams for architecture and functionality.
  • Layered architecture design.
  • Comprehensive error handling with device cross-monitoring.
  • Configurable settings with RS485 & CAN messaging support.
  • DMA and interrupt handling for I2C, SPI, UART, CAN, GPIO, and PWM.
  • Optimized memory management to prevent leaks.
  • Unit testing for all modules.