| 主权项 |
1. A motor drive controller, comprising:
a difference control section; a driver output section; a drive current detection amplifier; and a load short-circuit detection circuit, wherein a motor and sensing resistor coupled in series can be coupled to an output terminal of the driver output section, wherein the difference control section generates a drive voltage command signal in response to a drive current command value and a drive current detection signal, and supplies the same to an input terminal of the driver output section, wherein the driver output section generates a drive output signal for driving the motor and sensing resistor coupled in series, in response to the drive voltage command signal generated from the difference control section, wherein the drive current detection amplifier generates the drive current detection signal fed back to the difference control section, in response to a drive current flowing through the sensing resistor, wherein an input terminal of the load short-circuit detection circuit is coupled to one of circuit nodes in a feedback loop including the difference control section, the driver output section, the motor and sensing resistor coupled in series, and the drive current detection amplifier, and wherein the load short-circuit detection circuit detects an abnormal oscillation waveform signal generated at the one of circuit nodes caused by a short-circuit state between both ends of the motor. |
