Patent ID: 11863110
Assignee: LX SEMICON CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. The BLDC motor driver of claim 1, wherein, when the voltage of the floated coil among the first to third coils is increased or decreased and the zero crossing time point of the back-electro motive force of the floated coil is detected, the controller:
controls the inverter so that the first power voltage or the second power voltage is supplied to the floated coil for the turn-on time in the optimum driving mode after the transition time in the optimum driving mode from the detected zero crossing detection time point; and
controls the inverter so that the coil, which receives the first power voltage or the second power voltage, is floated after the turn-on time in the optimum driving mode.