Space and power-saving multiple output regulation circuitry
First Claim
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1. 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.
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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.
7 Citations
20 Claims
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1. Circuitry comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Circuitry comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14)
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15. Regulator circuitry comprising:
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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.
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16. Circuitry comprising:
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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. - View Dependent Claims (17, 18, 19, 20)
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Specification