公开(公告)号：US20200127587A1

公开(公告)日：2020-04-23

申请号：US16163014

申请日：2018-10-17

Applicant: Infineon Technologies AG

Inventor： Christopher Roemmelmayer ,  Maximilian Burggraf

IPC: H02P6/185 ,  H02P6/26 ,  H02P6/28

Abstract: A controller circuit for a brushless direct current (BLDC) motor may be configured to estimate a rotor position of the BLDC motor and apply a constant start-up voltage to a stator winding of the BLDC motor using the estimated rotor position until a current at the stator winding corresponds to a local minimum current. The controller circuit may be further configured to, in response to the current at the stator winding corresponding to the local minimum current, allow commutation of the current at the stator winding, calculate the rotor position in response to allowing the commutation of the current at the stator winding, and commutate the current at the stator winding using the calculated rotor position.