Patent ID: 7723966

Claim:
A control device for a switching voltage regulator that includes a first and a second half-bridge connected to each other and each comprising a switch, the first half-bridge coupled between an input voltage to the regulator and a first reference voltage and the second half-bridge coupled between an output voltage from the regulator and the reference voltage, the regulator including a detector structured to detect an error between a voltage representative of the output voltage and a second reference voltage and an integrator structured to produce an integrated error by integrating an error detected by the detector, the control device comprising: a first driving circuit that drives the switch of the first half-bridge according to a first duty cycle proportional to the integrated error divided by the input voltage; a second driving circuit that drives the switch of the second half-bridge according to a second duty cycle proportional to the input voltage divided by the integrated error; and a triangular wave circuit that generates a triangular wave having a variable amplitude equal to a first value, given by the input voltage divided by a proportionality constant, when the integrated error is lower than the first value, and equal to a second value given by the integrated error when the integrated error is higher than the first value.