Title :
Comparison of high efficiency low output voltage forward topologies
Author :
Cobos, J.A. ; García, O. ; Uceda, J. ; Sebastian, J. ; de la Cruz, E.
Author_Institution :
DIE, Univ. Politecnica de Madrid, Spain
Abstract :
The main goal in the design of on board converters for distributed power architectures is size minimization, with power losses being the main constraint to achieve this objective. Very high efficiency has been obtained in this work in low output voltage (3.3 V) forward topologies, thanks to the use of self-driven synchronous rectification. Forward PWM topology with active clamp (FAC), forward with resonant reset (FRR) and forward with multiresonant switch ZVS-MRC are compared in this paper from the point of view of efficiency, switching frequency, losses in the synchronous rectifiers, transformer demagnetization, semiconductor stresses and EMI
Keywords :
PWM power convertors; demagnetisation; electromagnetic interference; losses; rectification; rectifiers; rectifying circuits; resonant power convertors; switching circuits; transformers; 3.3 V; EMI; active clamp; distributed power architectures; forward PWM topology; forward topologies; forward with multiresonant switch ZVS-MRC topolgy; forward with resonant reset topology; high efficiency; low output voltage; on board converters; power losses; self-driven synchronous rectification; semiconductor stresses; size minimization; switching frequency; synchronous rectifiers; transformer demagnetization; Clamps; Demagnetization; Low voltage; Pulse width modulation; Rectifiers; Resonance; Stress; Switches; Switching frequency; Topology;
Conference_Titel :
Power Electronics Specialists Conference, PESC '94 Record., 25th Annual IEEE
Conference_Location :
Taipei
Print_ISBN :
0-7803-1859-5
DOI :
10.1109/PESC.1994.373784
