A quick response switching regulator comprises a power stage having a pair
of high-side switch and low-side switch and an inductor connected
together by a switching node, a feedback circuit for producing a feedback
signal, and a control circuit producing control signals with reference to
the feedback signal to control the pair of high-side switch and low-side
switch. The feedback circuit is connected to the switching node to
shorten the feedback path and speed up the response. The control circuit
further monitors the current flowing through the inductor to keep the
low-side switch off before the peak of the inductor current becomes
higher than a value.