Fast settling voltage regulator circuitry with pole frequency tracking
AssigneeAdvanced Micro Devices, Inc.
InventorLuca Ravezzi
Life of this patent
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Abstract
An integrated circuit system includes voltage regulator circuitry that is coupled to and drives an integrated circuit device. The voltage regulator circuitry includes source follower circuitry, trans-impedance amplifier circuitry, and tracking circuitry. The source follower circuitry receives a first signal and generates a second signal by applying a first gain to the first signal. The trans-impedance amplifier circuitry receives the second signal from the source follower circuitry and outputs a third signal based on the second signal. The tracking circuitry receives the third signal from the trans-impedance amplifier circuitry and an output signal of the voltage regulator circuitry, and tracks a load current of the output signal using the third signal.
Claims20
A voltage regulator circuitry comprising:
- source follower circuitry configured to receive a first signal and generate a second signal by applying a first gain to the first signal;
- trans-impedance amplifier circuitry configured to receive the second signal from the source follower circuitry and output a third signal based on the second signal;
- and
- tracking circuitry configured to receive the third signal from the trans-impedance amplifier circuitry and an output signal of the voltage regulator circuitry, and track a load current of the output signal using the third signal.
A integrated circuit (IC) system comprising:
- an IC device;
- and
- voltage regulator circuitry coupled to the IC device and configured to output an output signal to the IC device, the voltage regulator circuitry comprising:
- source follower circuitry configured to receive a first signal and generate a second signal by applying a first gain to the first signal;
- trans-impedance amplifier circuitry configured to receive the second signal from the source follower circuitry and output a third signal based on the second signal;
- and
- tracking circuitry configured to receive the third signal from the trans-impedance amplifier circuitry and the output signal, and track a load current of the output signal using the third signal.
A method comprising:
- receiving, via source follower circuitry of voltage regulator circuitry, a first signal and generating a second signal by applying a first gain to the first signal;
- generating, via trans-impedance amplifier circuitry of the voltage regulator circuitry, a third signal based on the second signal;
- and
- tracking, via tracking circuitry of the voltage regulator circuitry, a load current of an output signal of the voltage regulator circuitry using the third signal.
Dependencies are inferred from the claim text.