A Saturable Transformer Based Technique to Drive a Synchronous Rectifier

Author

Tourkhani, Foauzi ; Vallee, Daniel

Author_Institution

MDA Space Mission, Montreal, Que.

Volume

2

fYear

2006

fDate

9-13 July 2006

Firstpage

876

Lastpage

881

Abstract

In this paper, we present a saturable transformer based method to gate drive a synchronous rectifier. The saturable transformer (ST) is placed in series with the synchronous rectifier (SR) to sense the turn off and the turn on transitions of the SR. When the SR is off and its anode to cathode voltage goes positive, the ST generates a voltage signal, which will amorce the gate drive circuit to turn on the SR, In addition, when the SR is on and its current goes negative, the ST generates a voltage signal, which amorces the gate drive circuit to turn off the SR. The saturable transformer method presented in this paper has been tested on the two switches forward power converter topology. In this implementation, the input voltage is equal to 100 V, the output voltage is equal to 9 V and the output load is 20 A. The full load measured efficiency is close to 94%. The details of the experimental results are presented in section 4

Keywords

driver circuits; network topology; power transformers; rectifying circuits; switching convertors; cathode voltage; gate drive circuit; power converter topology; saturable transformer based method; synchronous rectifier drives; Anodes; Cathodes; Circuit testing; Power generation; Rectifiers; Signal generators; Strontium; Switches; Switching circuits; Synchronous generators; Saturable transformer (ST); synchronous rectifier(SR);

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 2006 IEEE International Symposium on

Conference_Location

Montreal, Que.

Print_ISBN

1-4244-0496-7

Electronic_ISBN

1-4244-0497-5

Type

conf

DOI

10.1109/ISIE.2006.295750

Filename

4078200