SLVSE89C August 2017 – June 2020 DRV10987
The inductive sense method is used to determine the initial position of the motor when IPD is enabled. IPD is enabled by selecting IPDCurrThr[3:0] to any value other than 0000.
IPD can be used in applications where reverse rotation of the motor is unacceptable. Because IPD is not required to wait for the motor to align with the commutation, it can allow for a faster motor start sequence. IPD works well when the inductance of the motor varies as a function of position. Because it works by pulsing current to the motor, it can generate acoustics which must be taken into account when determining the best start method for a particular application.