TI's New 70W Driver Features Real-Time Control
Integrated BLDC motor can be operated in 10 minutes
Reduced motor noise and system size by 70%


As demand for high-efficiency, low-noise motors grows, so does the need for real-time motor control. Consequently, more and more devices are switching from AC induction motors to BLDC motors. High-efficiency, high-performance BLDC motors require complex hardware and optimized software design. Now, the development of next-generation devices is centered on faster motor response times and reduced design times.

On the 9th, Texas Instruments (TI) held an online press conference and announced the 70W ' MCF8316A , MCT8316A ' BLDC motor driver products that use trapezoidal control and field-oriented control (FOC) that do not require motor drive software.

Engineers can get BLDC motors up and running in less than 10 minutes with this product, reducing design time for appliances, industrial systems, and medical applications from months. It features real-time control functions, up to 18 individual components including MOSFETs, and achieves low noise with shortened system response time and up to 70% reduction in board space.

The MCF8316A and MCT8316A BLDC motor drivers incorporate a proprietary commutation control algorithm that eliminates software development and maintenance, saving months of development time. They also integrate features such as motor fault detection and protection mechanisms, enhancing system reliability. Sensorless technology calculates rotor position, eliminating the need for external Hall sensors.

The MCF8316A sensorless FOC motor driver intelligently extracts motor parameters, enabling designers to tune the motor while delivering consistent system performance regardless of motor manufacturing variations. The MCT8316A sensorless trapezoidal control motor driver enables motor tuning with just five hardware pins, reducing the need for an MCU interface.

◇ Provides fast system response and saves 70% of board space

The MCT8316A motor driver can achieve a maximum motor speed of 3.5 kHz. This speed is faster than any other wireless sensorless motor driver, enabling faster system response in applications such as robotic vacuum cleaners that require rapid and precise motor control.

The new products' real-time control features ensure low noise. The MCF8316A includes patented automatic dead-time compensation technology that compensates for current distortion for low-noise motors. The MCT8316A uses a variable trapezoidal control technique to reduce motor noise.

The MCT8316A and MCF8316A provide an industry-first, fast and controlled way to actively decelerate motors, enabling engineers to stop motors 50% faster than with conventional motor control techniques. Additionally, these products can prevent system damage by preventing energy from being randomly pumped back into the rail when the motor stops.

These two products reduce board space by up to 70% and lower the total cost of a motor system. Integrating three gate drivers and six high-side and low-side MOSFETs with an on-resistance (RDS(on)) of 50 mΩ, these are the industry's first BLDC motor drivers capable of delivering up to 70 W of power at 8 A peak current for 12 V and 24 V systems.

Additionally, it integrates components such as LDO regulators, DC/DC buck regulators, and current-sense amplifiers, eliminating up to 18 discrete ICs from the circuit.

Pre-production versions of the MCF8316A and MCT8316A BLDC motor drivers are available now from TI.com in a 40-pin, 5 mm × 7 mm QFN package. Pricing starts at $1.75 in 1,000-unit quantities, with multiple currency and shipping options available.