The Texas Instruments DRV10987 is a 50w, 12 V to 24 V, three-phase sensorless BLDC motor driver

     The Texas Instruments DRV10987 device is a three-phase sensorless 180° sinusoidal motor driver with integrated power mosFEts that can deliver up to 2a continuous drive current. The equipment is specifically designed for cost-sensitive, low noise, low number of external parts fan and pump applications. Provides current to the motor at a supply voltage as low as 6.2V. When the supply voltage is higher than 28v, the device stops driving the motor and protects the DRV10987 circuit.

     The DRV10987 uses a proprietary sensorless control scheme to provide continuous sinusoidal drive, which greatly reduces the pure tone acoustics normally produced by reversing. The interface design of the device is simple and flexible. The motor can be controlled directly through PWM, analog, or I(2)C input. Motor speed feedback is available through both FG pins and the I(2)C interface simultaneously.

     The device uses an integrated step-down regulator that effectively lowers the supply voltage to 5v to power internal and external circuits. The 3.3V LDO can also be used to power external circuits. Standby mode (8.5mA) version (DRV10987S) lets the regulator run, and Sleep Mode (48μs) version (DRV10987D) lets the regulator turn off.

     An I(2)C interface allows the user to reprogram specific motor parameters in registers and program EEPROM to help optimize the performance of a given application. DRV10987 devices are HTSSOP thermal high efficiency package, 24 pin package, exposed heat pad. Operating ambient temperature is specified from -40°C to +125°C.