Brushless DC motor driver has embedded intelligence, small form factor and simple pinout structure

Texas Instruments’ DRV10970 is an integrated three-phase BLDC motor driver for home appliance, cooling fans, and other general-purpose motor control applications. The embedded intelligence, small form factor, and simple pinout structure reduce the design complexity, board space, and system cost. The integrated protections improve the system robustness and reliability. The output stage of driver consists of three half-bridges with RDSON of 400 mohm (H + L). Each half-bridge is capable of driving up to 1A RMS and 1.5A peak output current. When the device enters sleep mode, it consumes typical 35µA of current. The advanced 180 degree sine-wave commutation algorithm is embedded into the device and achieves high efficiency, low torque ripple, and superior acoustic performance. The adaptive driving angle adjustment function achieves the most optimized efficiency regardless of the motor parameters and load conditions. It is designed for either differential or single-ended Hall sensor based applications. The differential Hall signal inputs are detected by the integrated comparators. The device supports three Hall and single Hall based applications; the single Hall sensor mode reduces the system cost by eliminating two Hall sensors. The device incorporates multiple protection features such as overcurrent, undervoltage, overtemperature, and locked rotor conditions to improve the system robustness. The driver is packaged in a thermally-enhanced 24-pin TSSOP package (eco-friendly: RoHS and no Sb/Br).