Title :
A novel high frequency current-driven synchronous rectifier for low voltage high current applications
Author :
Xie, Xuefei ; Liu, Joe Chui Pong ; Poon, Franki Ngai Kit ; Pong, Man Hay
Author_Institution :
Dept. of Electr. & Electron. Eng., Hong Kong Univ., China
Abstract :
A novel current-driven synchronous rectifier is presented in this paper. With the help of a current sensing energy recovery circuit, the proposed current-driven synchronous rectifier can operate at high switching frequency with high efficiency. Compared with those voltage-driven synchronous rectification solutions, this current-driven synchronous rectifier has several outstanding characteristics. It can be easily applied to most switching topologies like an ideal diode. Constant gate drive voltage can be obtained regardless of line and load fluctuation. Converters designed with this synchronous rectifier are also capable of being connected in parallel without taking the risk of reverse power sinking. The principle of operation is given in the paper. A series of experiments verify the analysis and demonstrate the merits
Keywords :
rectifying circuits; switching circuits; constant gate drive voltage; current sensing energy recovery circuit; current-driven synchronous rectifier; high efficiency; high frequency current-driven synchronous rectifier; high switching frequency; ideal diode; line fluctuation; load fluctuation; low voltage high current applications; parallel connection; reverse power sinking; voltage-driven synchronous rectification; Circuit topology; Current transformers; Diodes; Electronic mail; Low voltage; Power conversion; Power engineering and energy; Rectifiers; Strontium; Switching frequency;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2001. APEC 2001. Sixteenth Annual IEEE
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-6618-2
DOI :
10.1109/APEC.2001.911688