Topology selection and design trade-offs for multi-kW telecoms DC power supplies

• Published in: IEE conference publication pp. 439 - 444
• Main Authors: Ward, G.A, Forsyth, A.J
• Format: Conference Proceeding
• Language: English
• Published: London IEE 2002
• Subjects: Applied sciences; Convertors; Electrical engineering. Electrical power engineering; Electrical machines; Exact sciences and technology; Insulated gate field effect transistors; Other field effect devices; Power convertors and power supplies to apparatus; Power electronics, power supplies; Power semiconductor devices; Relays and switches; Telecommunication power supplies; PWM power convertors; cost; phase-shift PWM; loss calculation; resonant power convertors; power MOSFET; single chip MOSFET switching devices; losses; telecommunication power supplies; series-parallel resonant converters; conduction losses; high frequency power converters; component size; telecoms DC power supplies; switching circuits; design trade-offs; topology selection; zero-voltage switching requirement; telecommunications applications; field effect transistor switches; operating frequency; Performance evaluation; System architecture; Phase shift; Zero voltage switching; System design; Telecommunication; Power supply; Power electronics; Series parallel connection; High power; Electric loss; Resonant power convertors
• ISBN: 0852967470; 9780852967478
• ISSN: 0537-9989
• DOI: 10.1049/cp:20020157

The objective of this work is to examine the complex inter-relationships between zero-voltage switching requirement, component size, cost, operating frequency and conduction losses in high frequency power converters for telecommunications applications. A systematic approach for component selection and loss calculation is devised and explained for the phase-shift PWM and series-parallel resonant converters. The performance of the two topologies is then compared over a range of frequencies for several standard single chip MOSFET switching devices.