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Buck-boost power converter circuits, methods and systems

  • US 8,395,910 B2
  • Filed: 08/08/2011
  • Issued: 03/12/2013
  • Est. Priority Date: 06/06/2006
  • Status: Active Grant
First Claim
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1. A power conversion circuit, comprising:

  • an input stage which repeatedly, at various times, drives current into the parallel combination of an inductor and a capacitor, and immediately thereafter temporarily disconnects, on every inductor cycle, said parallel combination from all external connections, to thereby transfer some energy from said inductor to said capacitor;

    wherein said action of driving current is performed in opposite senses and various times, and wherein said disconnecting operation is performed substantially identically for both directions of said step of driving current; and

    an output stage which extracts energy from said parallel combination to thereby perform power conversion.

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