Title :
MOSFET synchronous rectifiers for isolated, board-mounted DC-DC converters
Author :
Stojcic, Goran ; Nguyen, Chien
Author_Institution :
Int. Rectifier Corp., El Segundo, CA, USA
Abstract :
Board-mounted isolated DC-DC converters are being rapidly deployed in telecom and electronic data processing applications. In order to achieve required efficiency, power density, manufacturability and cost, a great majority of new low-voltage designs are utilizing power MOSFETs not only for the primary control switching, but also for the secondary synchronous rectification. However, requirements for MOSFETs used as secondary synchronous rectifiers can differ significantly from requirements of primary control MOSFETs, or even from MOSFETs used in nonisolated synchronous buck converters. Identifying these differences and specific circuit requirements is a prerequisite to specifying power MOSFETs suitable for a broad range of applications. This paper provides comprehensive analysis of circuit-level and MOSFET-level parameters and determines their significance for efficient synchronous rectification
Keywords :
AC-DC power convertors; DC-DC power convertors; field effect transistor switches; power MOSFET; power semiconductor switches; rectifying circuits; switching circuits; MOSFET synchronous rectifiers; applications; circuit requirements; cost; efficiency; isolated board-mounted DC-DC converters; manufacturability; power MOSFETs; power density; primary control switching; secondary synchronous rectification; Buck converters; Costs; DC-DC power converters; Data processing; MOSFET circuits; Manufacturing; Power MOSFET; Rectifiers; Telecommunication control; Telecommunication switching;
Conference_Titel :
Telecommunications Energy Conference, 2000. INTELEC. Twenty-second International
Conference_Location :
Phoenix, AZ
Print_ISBN :
0-7803-6407-4
DOI :
10.1109/INTLEC.2000.884259
