Explain the operation of full bridge converters with their different operating modes. State its advantages and disadvantages.
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Answer :

 

Full bridge converter:

Full bridge converter provides isolation between input and output. Full bridge converter is used for step up or step down the input voltage. Full bridge converter consists of four power semiconductor switches, uncontrolled rectifier, a transformer with mid tap secondary, two diodes, and LC filter.

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Advantages:

  • Smaller size
  • Lighter weight
  • Less sensitive to input voltage variation


Disadvantages:

  • Regulation is not very well.
  • Higher output ripple.
  • Require filter on both input and output.


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