MOSFET resonance type DC-DC converter circuit

Published:2011/7/12 4:58:00 Author:TaoXi | Keyword: MOSFET, resonance type, DC-DC, converter | From:SeekIC

The MOSFET resonance type DC-DC converter circuit is as shown in the figure. The Los ella circuit is working through the transformer magnetic saturation and transistor flip overturn. In this circuit, the transformer is operating in the unsaturated mode, it presents the arc-shaped change through the gate feedback voltage of the MOSFET, and it everts the MOSFET by reducing gate voltage. This AC flows through the transformer primary coil Np. The transformer primary coil and the capacitance C1 produce the reverse-polarity resonance current. The oscillation frequency f of this circuit is decided by the resonant frequencies of the inductance Lp and the capacitor C1 of the transformer primary coil:1/[2π*(Lp*c1)1/2].



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