Forward converter regulator using controlled transformer |
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| Authors: | Ning Sun Chen DY Lee FC Gradzki PM Knights MA |
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| Affiliation: | Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA; |
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| Abstract: | A new control scheme is proposed for a forward power converter regulator using a controlled transformer. Pulse width modulation (PWM) control is used to reset the control core of the controlled transformer. As a result, a low-cost ferrite core can be used for the controlled transformer to achieve good regulation and high efficiency. Overall efficiency of 82-86% is achieved in a 200 kHz, 500 W, 5 V output regulator. A PWM-controlled transformer regulator is particularly suited for high-output-current and/or high-output-voltage postregulator applications |
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