ABSTRACT
As discussed in the previous chapter, conventional hysteresis-modulation (HM)-based sliding mode (SM) controlled converters generally suffer from significant switching frequency variation when the input voltage and output load are varied [52]. This is undesirable as it leads to oversized filters in the converters, deteriorates the regulation properties of the converters, and complicates “electromagnetic interference” suppression. Hence, it is very much preferred to operate the converters at a constant switching frequency.
