SLVSCP6H July 2014 – June 2020 DRV10983
If the motor is stationary, the commutation logic must be initialized to be in phase with the position of the motor. The DRV10983 provides for two options to initialize the commutation logic to the motor position. Initial position detect (IPD) determines the position of the motor based on the deterministic inductance variation, which is often present in BLDC motors. The Align and Go technique forces the motor into alignment by applying a voltage across a particular motor phase to force the motor to rotate in alignment with this phase. The following sections explain how to configure these techniques for use in the designer's system.