Input-Voltage Feedforward (IVFF) Circuit Minimizing Current Stress of Voltage-Doubler Rectified Asymmetrical Half-Bridge (VDRAHB) Converter
Chong-Eun Kim; Gun-Woo Moon
Industrial Electronics, IEEE Transactions on
Volume 55, Issue 5, May 2008 Page(s):2222 - 2224
Digital Object Identifier   10.1109/TIE.2007.896553
Summary: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.

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