Digital Current Mode Control for Buck-Converter Based on Average Inductor Current Measurement
Abstract
This paper introduces a digitally performedcurrent mode and voltage control for the dc-dc step down
converter based on voltage to frequency converter where the
average values of inductor current and output voltage are
obtained. These current and voltage measurement are
realized by the voltage control oscillator (VCO) and
counters (digital integrator). Such an approach enables full
digitalization of current and voltage control loops.
References
E. Vidal-Idiarte, L. Martnez-Salamero, F. Guinjoan, J. Calvente and S. Gomariz ,“Sliding and fuzzy control of a boost converter using an 8-bit microcontroller,” IEE Proceedings-Electric Power applications, vol. 151, N 01, pp. 5-11, Jan. 2004
M. Milanovic, M. Truntic, P. Slibar and D. Dolinar,
‘Reconfigurable digital controller for a buck converter based on FPGA. Microelectron. Reliab., vol. 47, no. 1, pp. 150-154,
January, 2007
B. J. Patella, A. Prodic, A. Zirger and D. Maksimovic, “Highfrequency digital pwm controller IC for dc-dc converters,” IEEE Transactions on Power Electronics, vol.18, no 1, pp. 438-446, January 2003.
J. A. Gow, C. D. Manning, “Novel fast-acting predictive current mode controller for power electronic converters,” IEE Proceedings-Electric Power applications, vol 148, N 2, pp.133-139, March 2001.
M. Truntic, M. Milanovic, E. Vidal-Idiarte, C. Carrejo, C. Alonso, “Digital current mode and voltage control for the DC-DC step-up converter based on the FPGA technology”. V: 14th International Power Electronics and Motion Control Conference, EPE-PEMC 2010.
R.D. Middlebrook, S. Cuk “A General Unified Approach to
Modeling Switching Power Stages.” IEEE Power Electronics
Specialist Conference-PESC77, pp. 36-37, May. 1977.