Patent ID: 8212538
Filing Date: 2012-07-03
Classification: H02M

Abstract:
1. A non-isolated hysteretic switching regulator that converts an input voltage supplied to an input terminal into a variable output voltage output to an output terminal, the switching regulator comprising: a switching transistor to alternately switch on and off current flow therethrough; an inductor to charge at the input voltage when the switching transistor is on, and discharge when the switching transistor is off; a feedback voltage generator to generate a first feedback voltage at a first feedback node by dividing the output voltage; a hysteresis comparator circuit having a voltage comparator to compare the first feedback voltage against a reference voltage to output a comparator output signal as a result of the comparison; and a feedback loop circuit to feed the comparator output signal back to the feedback voltage generator to generate a second feedback voltage at a second feedback node, the first feedback voltage having an alternating current component substantially dependent on the second feedback voltage varying with the comparator output signal.