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Dual-mode envelope tracking power converter circuitry

  • US 9,843,294 B2
  • Filed: 04/29/2016
  • Issued: 12/12/2017
  • Est. Priority Date: 07/01/2015
  • Status: Active Grant
First Claim
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1. Envelope tracking power converter circuitry comprising:

  • an envelope tracking power supply signal output node;

    an average power tracking power supply signal output node;

    a main switching power converter configured to receive a supply voltage and provide a first portion of an envelope tracking power supply signal at the envelope tracking power supply signal output node based on a main switching power converter control signal;

    a parallel amplifier configured to provide an output voltage and an output current based on a parallel amplifier supply voltage, an envelope control signal, and a feedback signal from an envelope power supply output node, wherein the output voltage provides a second portion of the envelope tracking power supply signal and the output current is used to generate the main switching power converter control signal; and

    parallel amplifier power converter circuitry configured to receive the supply voltage and provide the parallel amplifier supply voltage to the parallel amplifier and an average power tracking power supply signal to the average power tracking power supply signal output node.

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