| 摘要 |
PURPOSE: A motor driving device is provided to prevent stop of driving by supplying power to an FET(Field-Effect Transistor) after selecting a boosted voltage level. CONSTITUTION: A power supply selection unit(110) has a detection signal detected voltage. The power supply selection unit selects one power supply in a first power supply and a second power supply. A voltage level of the second power supply is differently formed from the first power supply. A driving unit(130) drives a motor by receiving the selected power. A driving control unit(120) provides a driving signal driving the driving unit. [Reference numerals] (110) Power supply selection unit; (121) PWM controller; (122) Gate driver; (140) Power detection unit; (150) DC/DC converter; (AA) Boost mode; (BB) External power; (CC) Normal mode |
