Push-pull converter circuit diagram composed of TDA4718

Published:2011/8/1 2:48:00 Author:Ecco | Keyword: Push-pull converter | From:SeekIC

The push-pull converter circuit composed of TDA4718 is shown as the chart. It uses two switching elements to do on / off work and to prevent the transformer magnetic saturation, then it can increase conversion efficiency. Transformer windings N1, N2 and N3, N4 are not symmetrical around system, and the bias point of the hysteresis loop will move, that is magnetic bias, then the output voltage increase will result in saturation. Because the transformer windings will produce stray capacitance, therefore, the higher the frequency will result in more complex inductive coupling effect between wingings.



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