ZHCSHA0E January 2018 – March 2021 DRV10974
PRODUCTION DATA
To align the rotor to the commutation logic, the DRV10974 device applies a current equivalent to the closed-loop run current to phase U by driving phases V and W equally. This condition is maintained for a maximum of 0.67 s (tALIGN). To avoid a sudden change in current that could result in undesirable acoustics, the voltage applied to the motor is changed gradually to obtain a current change of 12 A/s.