150 W board mounted power supply module using highly compact and efficient synchronous rectifiers

Author

Vithanage, A. ; Kamada, A. ; Muramatsu, M.

Author_Institution

Iwaki Electron. Co. Ltd., Fukushima, Japan

Volume

1

fYear

1998

fDate

15-19 Feb 1998

Firstpage

177

Abstract

A highly efficient low-profile 150 W DC-DC converter module has been successfully developed for telecommunication systems. This module has an efficiency up to 85% and is only 12.7 mm high. Total power loss and the height are reduced by using synchronous output rectifiers, low-profile flat E-core transformer with planar windings, a nondissipative turnoff snubber and using optimum switching frequency. Its volume is 45.26 cm³ and its power density is 3.3 W/cm³. This module can operate at the standard industrial temperature range of -25°C~+85°C under forced air convection with a heat-sink

Keywords

DC-DC power convertors; forced convection; heat sinks; rectification; rectifying circuits; telecommunication power supplies; transformer cores; transformer windings; transformers; -25 to 85 C; 12.7 mm; 150 W; 85 percent; DC-DC converter module; board mounted power supply module; forced air convection; heat-sink; height reduction; low-profile flat E-core transformer; nondissipative turnoff snubber; optimum switching frequency; planar windings; synchronous output rectifiers; synchronous rectification; synchronous rectifiers; telecommunication systems; total power loss reduction; Circuits; DC-DC power converters; Equations; Filters; Inductors; MOSFETs; Power generation; Power supplies; Rectifiers; Telecommunications;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition, 1998. APEC '98. Conference Proceedings 1998., Thirteenth Annual

Conference_Location

Anaheim, CA

Print_ISBN

0-7803-4340-9

Type

conf

DOI

10.1109/APEC.1998.647688

Filename

647688