Identifying voltage divider defects to prevent motor integrated circuit damage
AssigneeSemiconductor Components Industries, LLC
InventorsTakashi OGAWA, Fumio KUMAZAWA, Satoshi YOKOO, Juichi UNO
Life of this patent
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Abstract
A motor control system, in some embodiments, comprises: a voltage divider circuit having an output node, a voltage on said output node representing a desired motor rotation direction; control logic configured to receive an indication of said voltage; and a motor controller coupled to the control logic, wherein, if said indication of the voltage on the output node falls outside of a predetermined range, the control logic is configured to issue a motor stop signal to the motor controller indicating that at least one resistor of the voltage divider circuit is defective or is missing from the voltage divider circuit.
Claims20
A motor control system, comprising:
- a voltage divider circuit having an output node, a voltage on said output node representing a desired motor rotation direction;
- control logic configured to receive an indication of said voltage;
- and
- a motor controller coupled to the control logic,
- wherein, if said indication of the voltage on the output node falls outside of a predetermined range, the control logic is configured to issue a motor stop signal to the motor controller indicating that at least one resistor of the voltage divider circuit is defective or is missing from the voltage divider circuit.
A computer-readable medium comprising code, which, when executed, causes a processor to:
- receive an indication of a voltage present on an output node of a voltage divider circuit, said voltage represents a desired motor rotation direction;
- determine whether said indication of the voltage falls outside a predetermined range;
- and
- issue a motor stop signal to a motor controller if said indication of the voltage falls outside the predetermined range,
- wherein said motor stop signal represents that at least one resistor of the voltage divider circuit is defective or missing.
A method for controlling a motor, comprising:
- obtaining an indication of a voltage present on a voltage divider circuit output node;
- determining whether said indication falls outside a predetermined range;
- issuing a motor stop signal if said indication of the voltage falls outside the predetermined range, said motor stop signal represents that at least one resistor of the voltage divider circuit is defective or missing;
- and
- stopping a motor based on the motor stop signal.
Dependencies are inferred from the claim text.