Title :
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
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;
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
DOI :
10.1109/APEC.1994.316329
