Single end fly back type power converter circuit with energy returning winding diode clampling circuit

Published:2011/4/21 1:22:00 Author:May | Keyword: Single end, fly back, power converter, energy returning winding, diode clampling | From:SeekIC

The following diagram is single end fly back type power converter circuit with energy returning winding diode clamping circuit. The turn number of N3 winding is equal to N1's, and the polarity of them is opposite. When VT1 is cutting off and the potential of collector increasing two times of input voltage, diode VD2 is breaking over, VT1's collector potential is clamped, leakage inductance stored energy is retuning to network. In order to get relatively good effects, N2 and N1 must close coupling, and clamping diode VD2 can break over fast.



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