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Reversible buck-boost chopper circuit, and inverter circuit with the same

  • US 20050218876A1
  • Filed: 03/30/2005
  • Published: 10/06/2005
  • Est. Priority Date: 03/31/2004
  • Status: Active Grant
First Claim
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1. A reversible buck-boost chopper circuit connected between a DC power source and a load, the circuit comprising:

  • a first half-bridge circuit with a first output terminal comprising;

    a first switching element having a high-side main electrode connected to a positive electrode of the DC power source; and

    a second switching element connected to the first switching element in series at the first output terminal, the second switching element having a low-side main electrode connected to a negative electrode of the DC power source;

    a second half-bridge circuit with a second output terminal comprising;

    a third switching element having a high-side main electrode connected to a high-side terminal of the load; and

    a fourth switching element connected to the third switching element in series at the second output terminal, the fourth switching element having a low-side main electrode connected to a low-side terminal of the load and the negative electrode of the DC power source; and

    a reactor connected between the first output terminal of the first half-bridge circuit and the second output terminal of the second half-bridge circuit.

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