Efficiency improvement techniques of high current low voltage rectifiers using MOSFETs
| Title | Efficiency improvement techniques of high current low voltage rectifiers using MOSFETs |
| Publication Type | Conference Paper |
| Year of Publication | 2009 |
| Authors | Shafik, ZM, Masoud MI, Fletcher J, Finney SJ, Williams BW |
| Conference Name | Proceedings of the 44th International Universities Power Engineering Conference |
| Date Published | September |
| Conference Location | University of Strathclyde |
| Keywords | Power electronic devices and applications Power Electronics and Devices |
| Abstract | In this paper, the application of synchronous rectifiers to a high current low voltage power supply is introduced. Analysis show that using MOSFETs offers the advantage of reducing the conduction losses significantly compared to Diodes and Thyristors, with the possibility of achieving almost an ideal switch by paralleling more than one MOSFET. Also, the design considerations for paralleling MOSFETs are briefly discussed, as paralleling is required for satisfying the high current requirements. Cryogenic operation offers further reduction of the conduction losses. MOSFETs with various ratings are tested in order to decide whether it is advantageous from the power consumed (for cooling), and the power saved (due to the on-resistance reduction) ratio. |
