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Smooth transitioning buck-boost DC-DC converter

  • US 9,979,295 B2
  • Filed: 04/03/2017
  • Issued: 05/22/2018
  • Est. Priority Date: 07/24/2014
  • Status: Active Grant
First Claim
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1. Circuitry configured to operate in both a first mode and a second mode, and comprising:

  • control circuitry configured to provide a first mode timing signal and a second mode timing signal; and

    switching circuitry configured to provide a switching output signal, wherein;

    during the first mode, when a first pulse-width of the switching output signal is less than a first pulse-width threshold, the first pulse-width is limited based on both the first mode timing signal and the second mode timing signal; and

    during the second mode, when a second pulse-width of the switching output signal is less than a second pulse-width threshold, the second pulse-width is limited based on both the first mode timing signal and the second mode timing signal.

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