Patent ID: 9293990
Filing Date: 2016-03-22
CPC Classification: H02M

Claim Text:
1. A switching regulator comprising: an error amplifier that amplifies and outputs a difference between a divided voltage obtained by dividing a voltage output from an output transistor and a reference voltage; a ramp wave generator circuit that generates a ramp wave; a PWM comparator that compares the output voltage of the error amplifier with the ramp wave and that outputs a signal PWM; a 100% duty detector circuit that detects that the signal PWM has a 100% duty ratio; a phase compensating capacitor and a phase compensating resistor that are disposed in an output terminal of the error amplifier; and a discharge accelerator circuit that detects that the output of the error amplifier discharges the voltage of the phase compensating capacitor and that accelerates the discharge when the signal PWM has a 100% duty ratio.