Abstract
This paper presents a detailed examination of the circuit functioning and design analysis of an active clamp forward converter (DC–DC) with asynchronous rectification. Forward converter with active clamp (ACFC), to assist reset the flux in the transformer core, one clamp switch and clamp capacitor are used to absorb leakage energy of inductor, and decrease voltage and current spikes on the primary side of transformer and further lowering the voltage stress on the main switch (SM). By using the switch’s output capacitance and transformer leakage inductance, the clamped circuit helps the main switch in turning on during zero-voltage switching (ZVS). Switching the power switch to zero-voltage switching (ZVS) decreases switching losses and increases the converter’s overall efficiency. To verify the zero-voltage switching (ZVS) and operation of active clamp forward converter (ACFC), the design procedure and simulation results for ACFC with DC supply voltage of 80–120 V and have a DC output voltage (V0) of 13.41 V which is operating at rated load current (I0) of 32.82 A and a switching frequency (Fs) of 250 kHz is presented.
Published Version
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