Current-controlled buck converter in sliding mode
Electric power management in electronic products Introduction

Figure 5 shows the principle of voltage regulation using a linear regulator. The small-signal transfer function linking the variation of the output voltage to the variation of the reference voltage (useful for analyzing the frequency behavior of the closed-loop converter), is second-order in continuous conduction. The development of this transfer function is beyond the scope of this introductory article. Following a sudden change in load, e.g. if the load loses half its resistive value, the output voltage suddenly drops, as the current to be supplied to the load increases, and the...