Title :
Forward converter regulator using controlled transformer
Author :
Sun, Ning ; Chen, Dan Y. ; Lee, Fred C. ; Gradzki, Pawel M. ; Knights, Michael A.
Author_Institution :
Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
3/1/1996 12:00:00 AM
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
Keywords :
PWM power convertors; feedback; magnetic cores; power transformers; transformer cores; voltage control; voltage regulators; 200 kHz; 5 V; 500 W; 82 to 86 percent; PWM control scheme; controlled transformer; forward power converter regulator; low-cost ferrite core; postregulator applications; Circuits; Ferrites; Inductors; Leg; Magnetic cores; Pulse transformers; Pulse width modulation; Regulators; Sun; Transformer cores;
Journal_Title :
Power Electronics, IEEE Transactions on
