Patent ID: 8587285

Claim:
A power regulator, comprising: an output terminal that outputs an output voltage; a converter unit including a switch circuit, which is supplied with an input voltage, and a coil, which is coupled between the switch circuit and the output terminal; and a control circuit that compares a feedback voltage, which is in accordance with the output voltage, and a reference voltage and controls the switch circuit in response to a switching timing that is in accordance with the comparison result, the control circuit comprising: a voltage adding circuit that adds a ramp voltage to the feedback voltage or the reference voltage; and a timing adjustment circuit coupled to the voltage adding circuit to delay a timing for adding the ramp voltage with the voltage adding circuit from a switching timing of the switch circuit, wherein the timing adjustment circuit adjusts a delay time of the timing for adding the ramp voltage from the switching timing in accordance with a difference of a base voltage, which is set in accordance with the output voltage, and the feedback voltage so that the feedback voltage conforms to the base voltage.