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Input-Voltage Feedforward (IVFF) Circuit Minimizing Current Stress of Voltage-Doubler Rectified Asymmetrical Half-Bridge (VDRAHB) Converter

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2 Author(s)
Chong-Eun Kim ; Korea Adv. Inst. of Sci. & Technol., Daejeon ; Gun-Woo Moon

A new input-voltage feedforward (IVFF) circuit for a voltage-doubler rectified asymmetrical half-bridge (VDRAHB) converter is proposed in this letter. The proposed circuit regulates output voltage not by reducing duty ratio but by increasing switching frequency as input voltage increases. Therefore, by employing the proposed IVFF circuit into the VDRAHB converter, the peak currents of the overall components can be greatly reduced, and also, efficiency can be improved at high input voltages.

Published in:

IEEE Transactions on Industrial Electronics  (Volume:55 ,  Issue: 5 )