LOW I/O CURRENT SHARING ARCHITECTURE FOR MULTIPHASE DC-DC CONVERTERS
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United States of America Patent
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Issued Date -
Dec 7, 2023
app pub date -
Jun 2, 2022
filing date -
Jun 2, 2022
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Abstract
Large semiconductor ICs provide the processing power for billions of electronic devices used in every facet of modern life. Multiphase converters are the most common means of providing the current required for these CPUs, GPUs, and ASICs. Contemporary designs require 8, 12, 16, and even higher phase counts. Existing designs require each phase provide an independent current feedback line to the multiphase controller for current sharing purposes; this drastically increases the pin count of the controller and creates congestion in PCB routing. Our new idea moves the current sharing function to the power stage element, thereby reducing the cost of the controller and the complexity of the PCB.
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