Motor starting circuit having dead time setting mechanism
AssigneeAnpec Electronics Corporation
InventorKun-Min Chen
Life of this patent
Estimating the term…
Abstract
A motor starting circuit having a dead time setting mechanism is provided. The motor starting circuit includes a rotational speed detection circuit, a start-up commutation selector circuit, a control circuit, a driver circuit and an output stage circuit. The rotational speed detection circuit detects a rotational speed of a motor. The start-up commutation selector circuit determines whether or not to set a dead time within a motor start-up time interval to output a commutation instructing signal according to the rotational speed of the motor. The control circuit controls the driver circuit to drive the output stage circuit so as to start up the motor according to the commutation instructing signal.
Claims16
A motor starting circuit having a dead time setting mechanism, comprising:
- a rotational speed detection circuit connected to a motor and configured to detect a rotational speed of the motor to output a rotational speed detection signal;
- a start-up commutation selector circuit connected to the rotational speed detection circuit and configured to determine whether or not there is a dead time within a motor start-up time interval to output a commutation instructing signal according to the rotational speed of the motor indicated by the rotational speed detection signal received from the rotational speed detection circuit;
- a control circuit connected to the start-up commutation selector circuit and configured to output a control signal according to the commutation instructing signal received from the start-up commutation selector circuit;
- a driver circuit connected to the control circuit and configured to output a driving signal according to the control signal received from the control circuit;
- and
- an output stage circuit connected to the driver circuit and the motor and configured to start the motor according to the driving signal received from the driver circuit.
Dependencies are inferred from the claim text.