Voltage regulation using digital voltage control
First Claim
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1. A method comprising:
- sensing error in a supply voltage signal supplied at an output node to a varying load;
generating one or more analog signals based on the sensed error;
converting one or more generated analog signals into one or more digital signals; and
controlling the supply voltage signal at the output node in response to the one or more digital signals.
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Abstract
For one disclosed embodiment, error is sensed in a voltage at an output node. One or more analog signals are generated based on the sensed error. One or more generated analog signals are converted into one or more digital signals. The voltage at the output node is controlled in response to the one or more digital signals.
26 Citations
24 Claims
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1. A method comprising:
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sensing error in a supply voltage signal supplied at an output node to a varying load;
generating one or more analog signals based on the sensed error;
converting one or more generated analog signals into one or more digital signals; and
controlling the supply voltage signal at the output node in response to the one or more digital signals. - View Dependent Claims (2, 3, 4, 5)
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6. An apparatus comprising:
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error sensor circuitry to sense error in a supply voltage signal supplied at an output node to a varying load and to generate one or more analog signals based on the sensed error;
analog-to-digital converter circuitry to convert one or more generated analog signals into one or more digital signals; and
digital voltage controller circuitry to control the supply voltage signal at the output node in response to the one or more digital signals. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A voltage regulator comprising:
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an error amplifier coupled to receive a voltage signal corresponding to an output voltage signal;
a flash analog-to-digital converter coupled to receive one or more analog signals from the error amplifier to generate thermometer code digital signals; and
a digital-to-analog converter coupled to receive thermometer code digital signals from the flash analog-to-digital converter to generate the output voltage signal. - View Dependent Claims (18, 19)
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20. A system comprising:
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a battery; and
an integrated circuit having a voltage regulator coupled to receive an input supply voltage signal from the battery to supply a regulated output supply voltage signal at an output node to a varying load, the voltage regulator comprising error sensor circuitry to sense error in the output supply voltage signal and to generate one or more analog signals based on the sensed error, analog-to-digital converter circuitry to convert one or more generated analog signals into one or more digital signals, and a digital voltage controller circuitry to control the output supply voltage signal in response to the one or more digital signals. - View Dependent Claims (21, 22, 23, 24)
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Specification