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US 12,613,542 B2Granted
Regulator circuit and operating method for the same
AssigneeMagnaChip Semiconductor, Ltd.
InventorsJusang Park, Hyoungkyu Kim
Life of this patent
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Abstract
A regulator circuit includes a first regulator configured to supply a first current to a VDD pad connected to a power line based on a first output voltage, and a second regulator configured to supply a second current to the VDD pad based on a second output voltage. The second output voltage has dropped by a predetermined delta voltage from the first output voltage.
Claims12
A regulator circuit comprising:
- a first regulator configured to supply a first current to a VDD pad connected to a power line based on a first output voltage;
- and
- a second regulator configured to supply a second current to the VDD pad based on a second output voltage,
- wherein the first regulator operates with a first reference voltage and the second regulator operates with a second reference voltage that is lower than the first reference voltage such that the second output voltage is lower than the first output voltage by a predetermined delta voltage, and
- wherein the second regulator is configured to supply the second current in response to a voltage of the VDD pad dropping below the second output voltage.
2 more elements
A method of operating a regulator circuit including a first regulator and a second regulator that supply currents to a VDD pad connected to a power line, the method comprising:
- supplying, by the first regulator, a current to the VDD pad in response to a voltage of the VDD pad being greater than or equal to a second output voltage;
- and
- supplying, by both the first and second regulators, currents to the VDD pad in response to the voltage of the VDD pad dropping below the second output voltage,
- wherein an output voltage of the first regulator is set to a first output voltage and an output voltage of the second regulator is set to a second output voltage that is lower than the first output voltage by a predetermined delta voltage, the first regulator using a first reference voltage and the second regulator using a second reference voltage different from the first reference voltage to establish the predetermined delta voltage.
1 more element
A regulator circuit comprising:
- a first regulator configured to supply a first output voltage to a first output terminal;
- a second regulator configured to supply a second output voltage, which is set to be lower than the first output voltage by a predetermined delta voltage, to a second output terminal connected to the first output terminal;
- and
- a VDD pad connected to the first output terminal and the second output terminal,
- wherein the first regulator uses a first reference voltage and the second regulator uses a second reference voltage that is lower than the first reference voltage such that the second output voltage is lower than the first output voltage by the predetermined delta voltage, and
- wherein both the first regulator and the second regulator are configured to supply output voltages in response to a voltage of the VDD pad dropping below the second output voltage.
3 more elements
Dependencies are inferred from the claim text.