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BOOST CONVERTER CONTROL FOR ENVELOPE TRACKING

  • US 20140111276A1
  • Filed: 10/24/2012
  • Published: 04/24/2014
  • Est. Priority Date: 10/24/2012
  • Status: Active Grant
First Claim
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1. An apparatus comprising:

  • an enable generation block configured to turn on an enable signal in response to detecting that a sum of a first headroom voltage and an enable peak of a tracking supply voltage is greater than an amplifier supply voltage; and

    a target generation block configured to generate a target voltage comprising the sum of a second headroom voltage and a target peak of the tracking supply voltage;

    wherein a boost converter is configurable to generate the amplifier supply voltage higher than a boost supply voltage coupled to the boost converter, and wherein the boost converter is configured to be enabled in response to the enable signal being turned on and, when enabled, to drive the amplifier supply voltage to the target voltage.

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