Title :
Analysis of abnormal phenomena caused by synchronous rectifiers in a paralleled converter system
Author :
Kohama, Teruhiko ; Ninomiya, Tamotsu ; Shoyama, Masahito ; Tymerski, Richard
Author_Institution :
Dept. of Electr. & Electron., Kyushu Univ., Fukuoka, Japan
Abstract :
Problems of synchronous rectification in a parallel-module DC-DC converter system are described. These include excessive power dissipation due to the bidirectional current flow capability of MOSFETs and abnormal oscillation due to the cross coupling of the MOSFETs used as synchronous rectifiers. The abnormal oscillation, which causes excessive voltage stress, is analyzed; the results of which are subsequently confirmed by experiment
Keywords :
AC-DC power convertors; DC-DC power convertors; power MOSFET; rectifying circuits; abnormal oscillation; abnormal phenomena analysis; bidirectional current flow capability; cross coupling; parallel-module DC-DC power converter system; paralleled power converter system; power MOSFETs; power dissipation; synchronous rectifier; synchronous rectifiers; voltage stress; Circuits; DC-DC power converters; Diodes; MOSFETs; Multichip modules; Power system reliability; Rectifiers; Stress; Switches; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1998. INTELEC. Twentieth International
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-5069-3
DOI :
10.1109/INTLEC.1998.793558
