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This paper presents the analysis and design of a non-isolated, current-fed buck-boost DC-DC converter. The converter is capable of performing both buck and boost operations with zero-ripple input current. An active-clamp circuit is used to recycle the energy stored in the leakage inductance, which minimizes the voltage stress of main switch and provides zero-voltage switching at turn-on. The circuit...
This paper presents a 500W Soft Switched Flyback converter operating in discontinuous mode. The detailed circuit description, operation, characteristics, circuit equations and simulation results of the Active Clamp Flyback converter are presented here. The clamp capacitor absorbs leakage and a part of magnetizing energy stored in the primary winding of the Flyback transformer. Therefore the leakage...
In this paper, an active clamp circuit is applied to a flyback current-fed push pull converter to limit the voltage stress across the switch due to transformer leakage inductance. In addition, this clamp circuit provides soft switching condition for all switches. This allows the designer to increase the switching frequency in order to reduce the converter size. The proposed converter operates under...
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