Voltage regulator circuits, systems and methods for having improved supply to voltage rejection (SVR)
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United States of America Patent
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Aug 22, 2017
Grant Date -
Jul 6, 2017
app pub date -
Dec 31, 2015
filing date -
Dec 31, 2015
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Abstract
A voltage regulator is controlled to improve supply voltage rejection by cancelling an alternating component of a supply voltage signal that is capacitively coupled to a high-impedance node within the voltage regulator. This cancellation is done by capacitively coupling an inverted version of the alternating component to the high-impedance node to thereby substantially cancel the alternating component present on the high-impedance node. The high-impedance node may be a high-impedance voltage reference node of the voltage regulator.
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