Patent ID: 8810231

Claim:
A method of controlling ripple in an output voltage of a switching regulator, comprising: providing a ramp circuit to selectively charge and discharge a ramp capacitor, the ramp capacitor providing a ramp voltage; selectively adding the ramp voltage to the output voltage to generate a summation voltage; comparing the summation voltage to a reference voltage using a first comparator circuit to generate a control signal, wherein the first comparator circuit operates with hysteresis wherein, relative to the reference voltage, the first comparator circuit switches the control signal from high to low at a first summation voltage level different from a second summation voltage level at which the first comparator circuit switches the control signal from low to high; and coupling an input voltage to an LC circuit based on the control signal, the LC circuit providing the output voltage, wherein the input voltage is selectively coupled to the LC circuit, when the ramp capacitor is selectively charged.