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

Claim 13:
14. The method of claim 13, wherein, in a driving mode after the test mode, when the BLDC motor is driven by applying the turn-on time and the transition time in the optimum driving mode, and when a voltage of a floated coil among first to third coils included in the BLDC motor is increased or decreased and a zero crossing time point of a back-electro motive force of the floated coil is detected:
a first power voltage or 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
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.