Digital control strategies for switch-mode power supply

Xuefang Lin-Shi (1, 2) , Bruno Allard (1, 2) , Dominique Tournier (1, 2) , Jean-Marie Rétif (1, 2) , Florent Morel (1, 2)

1 AMPERE - Ampère
2 CEGELY - Centre de génie électrique de Lyon

Analogue control of monolithic DC/DC converters is coming to a limit due to high switching frequency and a request for large regulation bandwidth. Digital control is now experimented for low-power low-voltage switch-mode power supply. Digital implementation of analogue solutions does not prove real performances. Other digital controllers have been experimented but applied to discrete converters. This paper compares a classical digital controller to a possible alternative strategy. Sensitivity functions are used to compare controller performances. RST algorithm determined by robust pole assignment shows better performances

Domaines: Energie électrique

Xuefang Lin-Shi, Bruno Allard, Dominique Tournier, Jean-Marie Rétif, Florent Morel. Digital control strategies for switch-mode power supply. 32nd IEEE IECON, Nov 2006, Paris, France. pp.79 - 84, ⟨10.1109/IECON.2006.347547⟩. ⟨hal-00369390⟩