Point of load regulator synchronization and phase offset
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United States of America Patent
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Feb 14, 2017
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app pub date -
Apr 22, 2014
filing date -
Apr 22, 2014
priority date (Note) -
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Abstract
An electronic system includes a multiple POL regulators that supply a regulated voltage to a component within the electronic system. A phase spreading scheme may be implemented so that the POL regulators operate under various phases to reduce voltage noise, high input capacitance, and high radiated emissions. One phase spreading scheme includes a single POL regulator controlling phase spreading so that the other POL regulators operate under different phases. Another phase spreading scheme includes an upstream POL regulator determining a phase offset that may be passed to a downstream POL regulator so that the downstream POL regulator may operate under a different phase relative to the upstream POL regulator.
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