Space and power-saving multiple output regulation circuitry
AssigneeSanDisk Technologies LLC
InventorsSrinivasa Rao Sabbineni, Bhavin Odedara, Jayanth Mysore Thimmaiah
Life of this patent
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Abstract
Regulator circuitry may include a plurality of output circuits to generate a plurality of regulated output voltages. The regulator circuitry may include a single operational amplifier and a single feedback loop for regulation, which may reduce space and power consumed by the regulator circuitry. A transconductor and current mirror circuitry may be included to generate the plurality of regulated output voltages based a single operational amplifier output voltage generated with the single operational amplifier and feedback loop.
Claims22
Circuitry comprising:
- a transconductor circuit configured to generate a transconductor current based on an amount of difference between a reference voltage and a feedback voltage;
- current mirror circuitry configured to:
- generate a plurality of mirrored currents based on the transconductor current;
- and
- supply the plurality or mirrored currents to a plurality of resistors;
- and
- a plurality of output circuits configured to generate a plurality of regulated output voltages based on the plurality of mirrored currents,
- wherein each of the plurality of output circuits is configured to generate a respective one of the regulated output voltages based on a corresponding one of the plurality of resistors.
(canceled)
Circuitry comprising:
- an operational amplifier configured to generate an operational amplifier voltage in response to receipt of a feedback voltage and a reference voltage;
- a feedback circuit configured to generate a feedback circuit output voltage in response to receipt of the operational amplifier voltage;
- a feedback loop configured to generate the feedback voltage based on a first resistor, a second resistor, and the feedback circuit output voltage;
- current mirror circuitry configured to generate a plurality of mirrored currents based on the operational amplifier voltage;
- and
- a plurality of output circuits, each configured to generate one of a plurality of regulated output voltages based on the first resistor, the second resistor, and a respective one of the plurality of mirrored currents.
16-20. (canceled)
Regulator circuitry comprising:
- means for generating a transconductor current based on an amount of difference between a reference voltage and a feedback voltage;
- means for generating a plurality of mirrored currents based on the transconductor current;
- means for supplying the plurality of mirrored currents to a plurality of resistors;
- and
- means for generating each of a plurality of regulated output voltages based on the plurality of mirrored currents and a corresponding one of the plurality of resistors.
Circuitry comprising:
- an operational amplifier circuit configured to generate an amplifier output voltage in response to receipt of a reference voltage and a feedback voltage;
- a transconductor circuit configured to:
- generate a transconductor current in response to receipt of the operational amplifier output voltage;
- and
- supply the transconductor current to a first resistor;
- current mirror circuitry configured to:
- mirror the transconductor current to generate a plurality of mirrored currents;
- and
- supply the plurality of mirrored currents to a plurality of second resistors;
- and
- a plurality of output circuits, each configured to generate a respective one of a plurality of regulated output voltages based on a resistance of the first resistor and a resistance of an associated one of the plurality of second resistors.
Dependencies are inferred from the claim text.