Data di Pubblicazione:
2006
Citazione:
Phase-Shifted Converter for Distributed Power Supply / F. Belloni, PG. Maranesi, M. Riva - In: Proceedings of the IASTED International Conference on European Power and Energy Systems (EUROPES 2006) / P.D. Bourka, C.G. Karagiannopoulos. - [s.l] : Acta Press, 2006. - ISBN 0-88986-555-8. - pp. 382-387 (( convegno IASTED International Conference on European Power and Energy Systems (EUROPES 2006) tenutosi a Rhodes, Greece nel 2006.
Abstract:
The last generation of microprocessors, recently introduced, has shown an increase in the operating frequency and, of course, in the supply characteristics. The different need of power makes necessary a severe design for the traditional isolated topology and push towards converters more suitable to meet the new high efficiency and high power exigencies.
The paper proposes a solution for distributing power in computing systems (high performance PCs and servers) based upon a DC to DC phase-shifted converter switching at 500kHz. It is characterized by a disposition in line of the MOSFETs and good soft switching performances. The converter acts as a charge generator controlled period by period. The operating principles of the SILC are described in the paper and the steady state behaviour is represented. Its small signal model has a first order dynamics, well suited for active loads, for instance low-voltage, high-current point-of-load converters.
The characterisations make reference to a 800W distributed power architecture. Efficiency forecasts, neglecting the losses of the point-of-load converters and of current limiters are above 90% at full load and remain high until the load falls below one third of full load
Tipologia IRIS:
03 - Contributo in volume
Keywords:
Power distribution architectures, phase-shifted converters, high frequency converters
Elenco autori:
F. Belloni, PG. Maranesi, M. Riva
Link alla scheda completa:
Titolo del libro:
Proceedings of the IASTED International Conference on European Power and Energy Systems (EUROPES 2006)