Method and apparatus for regulator control
AssigneeMarvell World Trade Ltd.
InventorsReuven Ecker, Ido Bourstein
Life of this patent
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Abstract
Aspects of the disclosure provide an integrated circuit (IC) chip that includes a feedback control circuit and a detecting circuit. The feedback control circuit is configured to govern a feedback signal to a first regulator that regulates a first power supply to the IC chip based on the feedback signal. The feedback control circuit is powered at least partially by a second power supply. The detecting circuit is configured to detect a power down of the second power supply, and to cause the feedback control circuit to be disengaged from the feedback signal in response to the power down.
Claims20
An integrated circuit (IC) chip, comprising:
- a feedback control circuit configured to govern a feedback signal to a first regulator that regulates a first power supply to the IC chip based on the feedback signal, the feedback control circuit being powered at least partially by a second power supply;
- and
- a detecting circuit configure to detect a power down of the second power supply, and to cause the feedback control circuit to be disengaged from the feedback signal in response to the power down.
A method, comprising:
- detecting a power down of a second power supply that at least partially powers a feedback control circuit, the feedback control circuit adjusting a feedback signal to a regulator that regulates a first power supply based on the feedback signal;
- and
- causing the feedback control circuit to be disengaged from the feedback signal in response to the power down of the second power supply.
A system, comprising:
- a first regulator configured to provide a first power supply based on a feedback signal;
- a second regulator configured to provide a second power supply;
- and
- an integrated circuit (IC) chip configured to operate based on the first power supply and the second power supply, the IC chip comprising:
- a feedback control circuit configured to govern the feedback signal to the first regulator, the feedback control circuit being powered at least partially by the second power supply;
- and
- a detecting circuit configure to detect a power down of the second power supply, and to cause the feedback control circuit to be disengaged from the feedback signal in response to the power down.
Dependencies are inferred from the claim text.