Controlling multiple facets of duty cycle response using a single motor integrated circuit pin
AssigneeSemiconductor Components Industries, LLC
InventorsTakashi OGAWA, Fumio KUMAZAWA
Life of this patent
Estimating the term…
Abstract
A system, in some embodiments, comprises: a motor; and control logic, coupled to the motor, to determine a duty keep status and a duty cycle threshold based on a received voltage, wherein the duty keep status indicates whether the system is to operate in a duty keep mode or a stop mode, wherein the duty cycle threshold indicates a minimum duty cycle for the motor if the system operates in said duty keep mode and indicates an input duty cycle threshold below which the control logic shuts off the motor if the system operates in the stop mode.
Claims20
A system, comprising:
- a motor;
- and
- control logic, coupled to the motor, to determine a duty keep status and a duty cycle threshold based on a received voltage,
- wherein the duty keep status indicates whether the system is to operate in a duty keep mode or a stop mode,
- wherein the duty cycle threshold indicates a minimum duty cycle for the motor if the system operates in said duty keep mode and indicates an input duty cycle threshold below which the control logic shuts off the motor if the system operates in the stop mode.
A computer-readable medium comprising code which, when executed, causes a processor to:
- receive a voltage via a single pin of an integrated circuit;
- use a keep status-duty cycle threshold curve to determine, based on said received voltage, whether to implement a duty keep mode or a stop mode for a motor;
- and
- use the curve to determine, based on said received voltage, a minimum duty cycle for the motor if said duty keep mode is implemented and to determine an input duty cycle threshold below which the motor is shut off if the stop mode is implemented.
A method, comprising:
- receiving a voltage via a single pin of an integrated circuit;
- using the received voltage to determine whether to implement a duty keep mode or a stop mode for a motor;
- implementing either the duty keep mode or the stop mode for said motor based on said determination;
- if said duty keep mode is implemented, using the received voltage to identify and implement a minimum duty cycle for said motor;
- and
- if said stop mode is implemented, using the received voltage to identify and implement an input duty cycle threshold below which said motor is shut off.
Dependencies are inferred from the claim text.