Title :
Synchronous rectification technique for high-voltage single-ended power converters
Author :
McNeill, Neville ; Wrobel, Rafal ; Mellor, Philip H.
Author_Institution :
Dept. of Electr. & Electron. Eng., Univ. of Bristol, Bristol, UK
Abstract :
Synchronous rectification (SR) has been extensively implemented in low-voltage switched-mode power conversion applications to reduce diode conduction losses. This paper addresses SR at higher voltages where the reverse recovery behaviour of the SR MOSFET´s intrinsic diode is particularly challenging. A saturable inductor switching-aid circuit is introduced into a power converter in conjunction with modified delay times between the MOSFET drive signals. The technique is experimentally evaluated in a buck converter supplying a 210W load from an input voltage up to 330V.
Keywords :
MOSFET; power convertors; rectifiers; MOSFET intrinsic diode; high-voltage single-ended power converters; low-voltage switched-mode power conversion applications; power 210 W; reverse recovery behaviour; saturable inductor switching-aid circuit; synchronous rectification technique; voltage 330 V; Converters; Delay; Inductors; Logic gates; Schottky diodes; Strontium; Switches;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
DOI :
10.1109/ECCE.2010.5618029
