4. Conclusion

This article presents the main principles of closed-loop control using a sliding current approach. Different implementations are possible, some of which do not offer substantial advantages over linear voltage or current approaches. A simple comparison allows us to evaluate the notion of dynamic performance and how the different approaches stack up. The convergence of these approaches is also seen from a recent point of view, close to voltage-mode control, but with the advantages of sliding mode in terms of transient performance. In all cases, the switching frequency excursion can be a brake on the use of such an approach, for noise reasons. An additional correction allows the switching frequency to be synchronized more or less strictly. A complete example can be found at [D3185] .