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System and Method for Balancing Current of Converter Phases

  • US 20200136514A1
  • Filed: 10/30/2018
  • Published: 04/30/2020
  • Est. Priority Date: 10/30/2018
  • Status: Active Grant
First Claim
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1. A method for balancing phase currents of a plurality of phases of a multiphase converter, the method comprising:

  • alternately connecting the phases during respective intervals to an input current;

    generating trigger signals at successive time instants respectively for the phases, wherein the trigger signals are synchronous in that the trigger signals are generated at a same time following the connection of the phases to the input current;

    sampling, at the time instants in response to the trigger signals, at a node of the multiphase converter that is common to the phases, the input current provided to the phases to obtain respective input current samples for the phases; and

    while the input current samples are unequal, adjusting the intervals based only on differences between the input current samples to minimize inequality of the input current samples.

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