Driver controller with AC-adapted and DC-adapted control modes
AssigneeInfineon Technologies Austria AG
InventorsMichael Herfurth, Xiaowu Gong
Life of this patent
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Abstract
Methods, devices, and integrated circuits are disclosed for a driver controller that determines whether an input is AC or DC and controls a driver in either an AC-adapted control mode or a DC-adapted control mode. An example method includes detecting whether an input is primarily AC or DC. The method further includes controlling an output current in an AC-adapted control mode in response to detecting that the input is primarily AC, and controlling the output current in a DC-adapted control mode in response to detecting that the input is primarily DC.
Claims17
A method of controlling a driver, the method comprising:
- detecting whether an input is primarily alternating current (AC) or primarily direct current (DC);
- and
- controlling an output current in an AC-adapted control mode in response to detecting that the input is primarily AC, and controlling the output current in a DC-adapted control mode in response to detecting that the input is primarily DC;
- wherein, in a programmatic mode, detecting whether the input is primarily AC or primarily DC comprises:
- measuring a total range of voltage variation between a minimum voltage and a maximum voltage of the input;
- determining the input to be primarily AC when the total range is greater than a selected threshold;
- and
- determining the input to be primarily DC when the total range is less than the selected threshold.
A driver controller device comprising:
- an input type detector;
- and
- a conditional two-mode output control;
- wherein in a programmatic mode the input type detector is configured to:
- measure a total range of voltage variation between a minimum voltage and a maximum voltage of an input;
- determine the input to be primarily alternating current (AC) when the total range is greater than a selected threshold;
- and
- determine the input to be primarily direct current (DC) when the total range is less than the selected threshold.
An integrated circuit for controlling a driver, the integrated circuit comprising:
- an input type detector;
- and
- a conditional two-mode output control;
- wherein the input type detector is configured to:
- measure a total range of voltage variation between a minimum voltage and a maximum voltage of the input;
- determine the input to be primarily alternating current (AC) when the total range is greater than a selected threshold;
- and
- determine the input to be primarily direct current (DC) when the total range is less than the selected threshold.
Dependencies are inferred from the claim text.