Title :
A high-efficiency 30 W board mounted power supply module
Author :
Murakami, Naoko ; Asoh, Hunichi ; Sakakibara, Kazuhiko ; Yachi, Toshiaki
Author_Institution :
NTT Corp., Tokyo, Japan
Abstract :
A high-efficiency low-profile 30 W power supply module suitable for telecommunications systems, such as the integrated services digital network (ISDN), has been developed. This module has an efficiency of 90% and is only 7.2 mm high. A simple MOSFET synchronous rectifier and a low-profile transformer with a flat E core and planar windings were used. Its volume is 37 cm3 and its power density is 0.8 W/cm 3 (13 W/in3). It is half the size of a conventional module under natural convection cooling conditions
Keywords :
ISDN; power supplies to apparatus; rectifying circuits; transformers; 30 W; 90 percent; ISDN; MOSFET synchronous rectifier; board mounted power supply module; integrated services digital network; low-profile transformer; natural convection cooling; planar windings; telecommunications systems; Cooling; ISDN; Laboratories; MOSFET circuits; Power generation; Power supplies; Rectifiers; Temperature; Transformer cores; Voltage;
Conference_Titel :
Telecommunications Energy Conference, 1991. INTELEC '91., 13th International
Conference_Location :
Kyoto
Print_ISBN :
0-87942-670-5
DOI :
10.1109/INTLEC.1991.172384
