Voltage regulator with adaptive control
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United States of America Patent
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Nov 29, 2016
Grant Date -
Oct 30, 2014
app pub date -
May 1, 2012
filing date -
May 1, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
Generally, this disclosure describes an apparatus, systems and methods for adaptively controlling a voltage regulator. The apparatus may include a differencing circuit configured to generate an error signal based on a difference between a reference voltage and the output voltage of the voltage regulator; a proportional control circuit coupled to the differencing circuit, the proportional control circuit configured to generate a control signal proportional to the error signal; a derivative control circuit coupled to the differencing circuit, the derivative control circuit configured to generate a control signal based on the derivative of the error signal; a summer circuit coupled to the proportional control circuit and the derivative control circuit, the summer circuit configured to sum the proportional control signal and the derivative control signal; a PWM signal generator circuit coupled to the summer circuit, the PWM generator circuit configured to adjust the PWM modulation based on the summed control signal; and a state monitor circuit configured to monitor the state of the output voltage and perform a gain adjustment on the proportional control signal and the derivative control signal based on the monitored state.
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