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SINGLE FEEDBACK LOOP FOR PARALLEL ARCHITECTURE BUCK CONVERTER - LDO REGULATOR

  • US 20130162233A1
  • Filed: 12/27/2011
  • Published: 06/27/2013
  • Est. Priority Date: 12/27/2011
  • Status: Active Grant
First Claim
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1. A voltage regulation circuit comprising:

  • a direct current to direct current (DC-DC) converter configured to control a first current provided from a source to a load via a first output;

    a linear regulator configured to control a second current provided from the source to the load via a second output;

    a single control loop configured to receive an output voltage across the load and a first reference voltage, the single control loop being further configured to generate a single error signal between the output voltage across the load and the first reference voltage and to control the DC-DC converter and the linear regulator using the single error signal such that when the single error signal is outside of a predetermined range the DC-DC converter provides the first current to the load and the linear regulator provides the second current to the load simultaneously.

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