Patent ID: 8049474

Claim:
A switching converter for generating an output voltage from an input voltage, comprising: a control arrangement for furnishing a control signal dependent on the output voltage, a first converter stage and at least a second converter stage, each converter stage including an inductive storage element with an inductance, a ramp signal generator configured to provide a ramplike signal having a ramp slope, a pulse width modulator which receives the control signal and the ramplike signal and which is configured to generate a pulse width modulated signal, and a driver circuit which receives the pulse width modulated signal and the input voltage and is configured to apply the input voltage to the inductive storage element in dependence on the pulse width modulated signal, wherein the ramp signal generator of the at least one second converter stage is operably coupled to receive an adjustment signal which is dependent on the inductance of the inductive storage element of the first converter stage, the ramp signal generator configured to adjust the ramp slope responsive to the adjustment signal, wherein the at least one second converter stage further comprises a computing unit configured to generate the adjustment signal, and wherein the computing unit is further configured to generate the adjustment signal based on the equation: k ⁢ ⁢ 2 = k ⁢ ⁢ 1 · Rs ⁢ ⁢ 1 Rs ⁢ ⁢ 2 = g ⁢ ⁢ 1 Rs ⁢ ⁢ 2 wherein k 1 is an amplifier gain of the first converter stage, Rs 1 is a resistance of a current measuring resistor of the first converter stage, and Rs 2 is a resistance of a current measuring resistor of the at least one second converter stage.