| 摘要 |
PURPOSE: A circuit for driving BLDC(Brushless Direct Current) motor without a sensor is provided to eliminate a Start-up section, which is a forced-driving section, when it is the time of an initial motor driving. CONSTITUTION: A circuit for driving BLDC(Brushless Direct Current) motor without a sensor comprises: a comparator, which temporary voltage is inputted to a first input terminal, and which voltage having a neutral point is inputted to a second input terminal; a flip-flop section composed of a flip-flop of N number, which the output of the comparator is commonly connected to an input terminal of a clock signal, and which a reset signal is commonly connected to an input terminal of a reset signal in series. When a data signal inputted to the input terminal of the first flip-flop is outputted from the N flip-flop, the circuit for driving BLDC motor without a sensor is driven to a driving mode.
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