Title :
Forward converter regulator using PWM controlled transformer
Author :
Sun, N. ; Chen, D.Y. ; Lee, F.C. ; Gradzki, P. ; Knights, M.A.
Author_Institution :
Virginia Power Electron. Center, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
A new control scheme is implemented in a forward 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, 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 post regulator applications
Keywords :
PWM power convertors; high-frequency transformers; magnetic cores; transformer cores; voltage control; voltage regulators; 200 kHz; 5 V; 500 W; 82 to 86 percent; PWM; PWM controlled transformer; control core; forward converter regulator; high efficiency; high-output-current; high-output-voltage post regulator; Circuits; Ferrites; Inductors; Leg; Magnetic cores; Pulse width modulation; Pulse width modulation converters; Regulators; Transformer cores; Voltage control;
Conference_Titel :
Power Electronics Specialists Conference, 1993. PESC '93 Record., 24th Annual IEEE
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-1243-0
DOI :
10.1109/PESC.1993.472058
