STM32F103C8T6: Application Analysis in Motor Control & Drone Fields

Application and Optimization of the STM32F103C8T6 in Motor Control

Motor control is an MCU The STM32F103C8T6, with its high-speed timers, PWM outputs, multi-channel ADC, and DMA, has become a popular choice for BLDC and stepper motor control boards.

STM32F103C8T6 Motor Control Features

• High-speed timers: Support complementary outputs and dead-band control;

• ADC: Multi-channel current and voltage sampling;

• DMA: Reduces CPU load and ensures real-time performance;

• Interrupt system: Implements motor commutation and overcurrent protection.

Common STM32F103C8T6 Motor Control Architectures

• Open-loop control: Suitable for low-cost products such as fans and pumps;

• Closed-loop control: Combined with Hall sensors or encoders for high-precision control;

• Field-of-control (FOC) vector control: Suitable for high-performance servo motors and drone flight control systems.

Comparison with other MCU motor control solutions

• TI C2000 series: Higher performance, but higher cost;

• NXP Kinetis series: Rich motor library, but weaker ecosystem than STM32;

• Domestic APM32/GD32: Compatible with the STM32F103C8T6, but reliability is still under verification.

Motor Control Design Considerations

• Optimize board layout to prevent motor interference with MCU signals;

• Select an appropriate current sampling circuit;

• Add protection logic to the firmware, such as overcurrent and stall protection.