Resonant reset forward topologies for low output voltage on board converters

Author

Cobos, J.A. ; García, O. ; Sebastián, J. ; Uceda, J.

Author_Institution

ETSI Ind.-Electron., Univ. Politecnica de Madrid, Spain

fYear

1994

fDate

13-17 Feb 1994

Firstpage

703

Abstract

The minimization of size and losses are the main goals in the design of high power density and low output voltage onboard DC/DC power converters. Forward topology with resonant reset combines the simplicity of its power stage with the feasibility to implement self driven synchronous rectification. Several operation modes for this topology are proposed and analyzed in this paper: fixed frequency PWM and constant off-time variable frequency, with and without zero voltage switching (ZVS). Design guidelines and experimental results are also provided for 3.3 V output voltage converters, featuring efficiencies up to 90%

Keywords

circuit resonance; insulated gate field effect transistors; power convertors; power transistors; pulse width modulation; rectifiers; rectifying circuits; semiconductor switches; switching circuits; 3.3 V; 90 percent; LV; ZVS; constant off-time variable frequency; design; fixed frequency PWM; losses; onboard DC/DC power converters; output voltage; power MOSFETs; power density; resonant reset forward topologies; self driven synchronous rectification; size; zero voltage switching; Circuit topology; Low voltage; MOSFET circuits; Network topology; Pulse width modulation; Rectifiers; Resonance; Switches; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1994. APEC '94. Conference Proceedings 1994., Ninth Annual

Conference_Location

Orlando, FL

Print_ISBN

0-7803-1456-5

Type

conf

DOI

10.1109/APEC.1994.316329

Filename

316329