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Power supply recovery current history-based limitation

  • US 10,199,860 B2
  • Filed: 01/28/2017
  • Issued: 02/05/2019
  • Est. Priority Date: 01/28/2017
  • Status: Active Grant
First Claim
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1. A power supply unit (PSU) which dynamically limits total recovery current, comprising:

  • a power input;

    a power output;

    a historic maximum power draw memory;

    an update logic which in operation monitors an input power level at the PSU power input or an output load at the PSU power output or both to determine a level of power drawn by the PSU from a power infrastructure, and where in operation the update logic updates a value in the historic maximum power draw memory to match the monitored input power level when the monitored input power level exceeds the historic maximum power draw memory value; and

    a recovery current limiting logic which in operation after an interruption of power to the PSU permits a recovery current to flow from the power infrastructure through the PSU power output while limiting the recovery current based on the historic maximum power draw memory value.

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