| HAIT Journal of Science and Engineering B Volume 2, Issues 5-6, pp. 581-593 © 2005 Holon Academic Institute of Technology | ||||
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Alternated duty cycle control method for half-bridge | ||||
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1Department of Electrical and Computer Engineering, University of Central Florida, Orlando, FL 32816, USA 2Intel Corporation, Hillsboro, OR 97124, USA 3Division of Emerson Network Power, Astec Power Advanced Technology, Andover, MA 01810, USA *Corresponding author: batarseh@mail.ucf.edu Received 1 July 2005, accepted 24 August 2005 | ||||
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A control method, namely, Alternated Duty Cycle (ADC) control, is presented in this paper. This method can achieve soft-switching for at least one switch of the two half-bridge switches. When soft-switching can be achieved only for one switch, ADC control alternates the soft-switching realization between the two switches so that each switch will be soft-switched during half of the time and hard-switched during the other half, keeping equal power losses distribution between the switches for better thermal management. Moreover, any asymmetry in the duty cycle will not cause asymmetric components stresses or transformer DC bias when ADC control is used. Theoretical analysis and implementation are presented along with experimental results. | ||||
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