Design of 200W BLDC Motor Controller Using DRV8301 and STM32F303
This project outlines the development of a compact 200W BLDC motor controller, leveraging the DRV8301 gate driver and STM32F303 microcontroller. Key innovations include Field-Oriented Control (FOC) for precise motor management, targeting sectors like robotics and industrial automation.
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The compact 200W Brushless DC (BLDC) motor controller integrates Texas Instruments' DRV8301 and STMicroelectronics' STM32F303. It employs Field-Oriented Control (FOC) for seamless torque delivery, crucial for applications in robotics and electric mobility.
The DRV8301 features a dual-channel gate driver and current sense amplifier, reducing the external component count, while the STM32F303's hardware floating-point unit supports real-time FOC computation at a 20kHz PWM frequency. The controller's three-phase inverter utilizes six N-channel MOSFETs in an H-bridge configuration, with adjustable dead-time to prevent shoot-through.
Current sensing utilizes shunt resistors and the DRV8301's internal amplifiers, simplifying the layout by eliminating external devices. The STM32F303 processes the FOC algorithm in a 50µs interrupt routine and supports CAN communication for telemetry. Overall, careful layout design minimizes parasitic inductance, enhancing performance reliability.
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