High performance digital control algorithms for DC-DC converters based on the principle of capacitor charge balance
- 1 June 2006
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- No. 02759306,p. 1-7
- https://doi.org/10.1109/pesc.2006.1712026
Abstract
In this paper, the principle of capacitor charge balance is utilized to develop high dynamic performance control algorithms for DC-DC converters. Two digital control algorithms are presented which are designed to drive DC-DC converters, (under load current variation or input voltage variation) to their steady-state conditions in optimum time. The proposed algorithms effectively improve the dynamic response of the converter by reducing the output voltage under/overshoot and minimizing the recovery time. The algorithms' key concepts and equations are presented in this paper. Experimental results are presented for a 25 Watt, 400 kHz synchronous Buck converter to verify the effectiveness of both algorithms. The results confirm that the dynamic response of a DC-DC converter is significantly improved (over that of conventional controllers) by implementing the proposed control algorithms.Keywords
This publication has 6 references indexed in Scilit:
- Linear-Non-Linear Control Applied in Multiphase VRMPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2006
- Steady-state and dynamic analysis of a buck converter using a hysteretic PWM controlPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2004
- High-frequency digital PWM controller IC for DC-DC convertersIEEE Transactions on Power Electronics, 2003
- Analysis and optimum design of a buck-type DC-to-DC converter employing load current feedforwardPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Optimal design of interleaved synchronous buck converter at high slew-rate load current transientsPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2002
- Digital controller design for switchmode power convertersPublished by Institute of Electrical and Electronics Engineers (IEEE) ,1999