Power controller
AssigneeMinebea Co., Ltd.
InventorsHiroyuki Kaidu, Masato Aoki
Life of this patent
Estimating the term…
Abstract
There is provided a power controller including a drive circuit connected to a DC power supply to apply a first voltage to the drive circuit and configured to supply power to an external load, a current detection circuit configured to detect a current flowing in the drive circuit by converting the current into a second voltage corresponding to the current, and a current-voltage control unit configured to generate a reference voltage corresponding to a limit value of the current flowing in the drive circuit when the first voltage is applied to the drive circuit, and configured to control the drive circuit to operate in a desired current according to the first voltage, based on a comparison result of the reference voltage and the second voltage.
Claims6
A power controller comprising:
- a drive circuit connected to a DC power supply to apply a first voltage to the drive circuit and configured to supply power to an external load;
- a current detection circuit configured to detect a current flowing in the drive circuit by converting the current into a second voltage corresponding to the current;
- and
- a current-voltage control unit configured to generate a reference voltage based on the first voltage corresponding to a limit value of the current flowing in the drive circuit when the first voltage is applied to the drive circuit, and configured to control the drive circuit to operate in a desired current according to the first voltage, based on a comparison result of the reference voltage and the second voltage,
- wherein the current-voltage control unit includes:
- a reference voltage generating unit configured to generate and output the reference voltage;
- a comparator configured to output a stop signal when the second voltage is greater than the reference voltage;
- and
- a drive circuit control unit configured to control the drive circuit to stop the supply of power to the external load by the drive circuit when the stop signal is inputted.
Dependencies are inferred from the claim text.