High-efficient buck-boost converter and control method thereof

High-efficient buck-boost converter and control method thereof

  • CN 103,078,495 A
  • Filed: 01/29/2013
  • Published: 05/01/2013
  • Est. Priority Date: 01/29/2013
  • Status: Active Application
First Claim
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1. the control method of a high efficiency type of voltage step-up/down converter comprises one first inductance and the second inductance, the input of the described type of voltage step-up/down converter of the first termination of described the first inductance,One first switch and a second switch are connected in series between the input and earth terminal of described type of voltage step-up/down converter;

  • The first end of described the second inductance is connected on the points of common connection of described the first switch and second switch, the output of the described type of voltage step-up/down converter of its second termination;

    One the 3rd switch is connected between second end and earth terminal of described the first inductance;

    One the 4th switch is connected between the output of the second end of described the first inductance and described type of voltage step-up/down converter;

    May further comprise the steps;

    the input terminal voltage and the output end voltage that receive described type of voltage step-up/down converter, and control the switch motion of described the first switch, second switch, the 3rd switch and the 4th switch according to the size of described input terminal voltage and described output end voltage, so that described type of voltage step-up/down converter works in boost mode or decompression mode.

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