A digital control technique for high-performances DC-DC converters

Conference: CIPS 2008 - 5th International Conference on Integrated Power Electronics Systems
03/11/2008 - 03/13/2008 at Nuremberg, Germany

Proceedings: CIPS 2008

Pages: 5Language: englishTyp: PDF

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Boscaino, V.; Capponi, G.; Blasi, G. M. di; Livreri, P. (Università degli Studi di Palermo, Dipartimento di Ingegneria Elettrica Elettronica e TLC, Viale delle Scienze – Edificio 9, 90128 Palermo, ITALY)
Marino, F. (STMicroelectronics, Industrial & Power Conversion, Stradale Primosole, 50, 95121, Catania, ITALY)

A linear-non-linear digital control for multiphase DC-DC converters that improves the stability of the system, solves limit-cycle problem, reduces the recovery time and limits over- and under-shoots in regulated output voltage, is presented. A four-module interleaved buck converter is designed for a 12V-to-1V/120A voltage regulator to test the innovative linear-non-linear control technique and the simulation model in Matlab-Simulink/Active-HDL mixed environment is described. Simulation results are shown. The designed power supply system shows fast transient responses comparable to analog controls.