Patent ID: 8305064

Claim:
A control device for controlling a switching converter, configured to supply an output voltage, the control device comprising: an operation circuit configured to change a state of at least one transistor of the converter from turned on to turned off or vice versa, respectively, in response to the output voltage going down or going up by a first voltage, the operation circuit including ramp voltage generator circuit configured to generate a ramp voltage and change the state of the at least one transistor from turned on to turned off or vice versa when the ramp voltage is equal to an output voltage of the converter; and a triggering circuit configured to determine a lower threshold voltage and a higher threshold voltage as a function of the first voltage and a voltage tolerance range, compare the output voltage of the converter with the lower threshold voltage and the higher threshold voltage, and trigger the ramp voltage generator circuit if the output voltage of the at least one transistor is higher than the higher threshold voltage or is lower than the lower threshold voltage.