Patent ID: 8779748

Claim:
An error amplification circuit comprising: an integrated circuit comprising: an error amplifier, having an output terminal, to amplify a difference between a predetermined reference voltage and an input feedback voltage for output; a current generator circuit to generate a bias current for supply to the error amplifier; a phase compensation resistor,connected to the output terminal of the error amplifier; a bias-current control terminal connected to the current generator circuit; and a phase compensation terminal connected to the output terminal of the error amplifier via the phase compensation resistor; a phase compensation capacitor connected to the phase compensation terminal, the phase compensation capacitor being provided outside the integrated circuit; and a bias-current control resistor electrically connectable to the bias-current control terminal, wherein the current generator circuit generates a first non-zero bias current when the bias-current control terminal is opened, and the current generator circuit generates a second bias current differing from the first bias current when the bias-current control terminal is connected to the bias-current control resistor.