12V to 24V, 3-phase sensorless 180° sinusoidal BLDC motor driver 'DRV10987'
Suitable for fan and pump applications with low cost, low noise, and fewer external components.
It incorporates a power MOSFET and continuously drives up to 2A of current. It supplies current to the motor with a minimum supply voltage of 6.2V. When the supply voltage exceeds 28V, it stops driving the motor to protect the circuit. Using a unique sensorless control scheme, it performs continuous sinusoidal drive, significantly reducing pure tones typically generated by rectification. The interface to the 'DRV10987' is simple and flexible. The motor can be directly controlled via PWM, analog, or I2C inputs. Motor speed feedback is provided simultaneously from both the FG pin and the I2C interface. The 'DRV10987' features a buck regulator that efficiently steps down the supply voltage to 5V for powering internal and external circuits. A 3.3V LDO is also available for powering external circuits. The I2C interface allows for reprogramming specific motor parameters in the registers, as well as programming the EEPROM to optimize performance for any application.