TI introduces a 70W BLDC motor driver with sensorless field orientation control and trapezoidal control without programming

     Texas Instruments introduces the industry's leading 70W brushless direct current (BLDC) motor driver to provide sensorless trapezoidal and field-oriented control (FOC) without programming. The newly released device enables engineers to start BLDC motors in 10 minutes, reducing weeks of design time for engineers designing a variety of industrial systems, such as large and small household appliances, and medical applications, such as ventilators and continuous positive airway pressure machines. By integrating real-time control functions and up to 18 discrete components, including MOSFETs, the new driver speeds up system response and reduces the layout space by up to 70% while providing excellent acoustic performance.

     Noman Akhtar, Senior research Analyst at Omdia, said: "The need for real-time motor control is more urgent than ever due to various trends such as increased power efficiency and automation, as well as the need to design lower-noise motors. A growing number of industrial systems are transitioning from AC induction motors to more energy-efficient BLDC motors, but require complex hardware and optimized software designs to deliver high performance. Meeting designers' demands for faster motor response while reducing the overall design cycle will be an important step forward for the next generation of industrial systems."

     Reduce design time with senserless motor control without programming The MCF8316A and MCT8316A brushless DC motor drivers include a unique set of commutation control algorithms that eliminate the need to develop, maintain and validate motor control software, reducing design time by weeks. These algorithms and highly integrated features allow motor drivers to better manage critical functions such as motor fault detection while implementing protection mechanisms that improve system reliability. These motor drivers integrate sensorless technology to determine rotor position, eliminating the need for external hall sensors, which reduces system costs and improves reliability.

     In addition, the MCF8316A sensorless field-oriented control motor driver intelligently extracts motor parameters, enabling designers to quickly tune the motor while providing consistent system performance regardless of motor manufacturing differences. With the MCT8316A sensorless trapezoidal control of motor drivers, designers need only five hardware pins to tune the motor. Since no microcontroller interface is required, the system is simplified.

     Excellent Acoustic performance The MCF8316A and MCT8316A BLDC motor drivers provide advanced real-time control capabilities that help engineers achieve industry-leading acoustic performance in applications such as air purifiers, refrigerators, washing machines and fans. The MCF8316A includes a patented precision automatic dead-time compensation technology that compensates for current distortion, enabling engineers to optimize motor acoustic performance. The MCT8316A includes different ladder control technologies that designers can use to reduce motor noise.

     Accelerate system response with real-time control The MCT8316A Sensorless Trapezoidal motor driver can reach a maximum motor frequency of 3.5kHz, faster than any other sensorless motor driver without programming. This speeds up system response in applications such as sweeping robots that require fast and precise motor control. The MCT8316A and MCF8316A are also industry-leading products that provide a fast and controlled way to actively reduce motor speeds, enabling engineers to shut down motors up to 50% faster than traditional motor control technologies.

     In addition, these devices protect the system from damage by selectively pumping energy back to the power rail when the motor is turned off. Reduce layout space by up to 70% The MCF8316A and MCT8316A allow designers to reduce layout space by up to 70% and reduce the total cost of the motor system. These devices integrate three gate drivers and six high-side and low-side MOSFETs, each with a 50mΩ on-resistance (RDS(on)). This enables TI's advanced BLDC motor drivers to deliver up to 70W of power and 8A peak current in 12V and 24V systems. These motor drivers also integrate components such as low voltage drop (LDO) regulators, DC/DC buck regulators, and current detection amplifiers, eliminating up to 18 discrete components.