| 摘要 |
In the brushless motor driver according to the invention, saturation voltage generating means (22) are provided for generating a saturation voltage corresponding to a torque command, while current correcting means (25) are provided for comparing the saturation voltage with operating voltages of driving transistors (Q21, Q25, Q29; Q22, Q26, Q30) to correct the amount of current in transistor drive control signals so that the operating voltages drop below the saturation voltage. Thus, it is possible to drive a brushless motor with a high efficiency and a low noise while preventing saturation of the driving transistors with respect to any torque command. |
