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Envelope tracking power management circuit

  • US 10,439,557 B2
  • Filed: 05/21/2018
  • Issued: 10/08/2019
  • Est. Priority Date: 01/15/2018
  • Status: Active Grant
First Claim
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1. An envelope tracking (ET) power management circuit comprising:

  • a voltage circuit comprising a voltage output and configured to generate a supply voltage at the voltage output;

    a plurality of tracker circuits comprising a plurality of voltage inputs configured to receive a plurality of input voltages, the plurality of tracker circuits configured to generate a plurality of ET modulated voltages based on the plurality of input voltages, respectively; and

    control circuitry configured to couple the voltage output to at least one selected voltage input among the plurality of voltage inputs to provide the supply voltage to at least one selected tracker circuit among the plurality of tracker circuits as a selected input voltage among the plurality of input voltages.

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