Patent ID: 6414469
Filing Date: 2002-07-02
Classification: G05F

Abstract:
In a dc-dc voltage converter comprising n interleaved dc-dc converters, where n is an integer greater than or equal to 2, connected in parallel between a dc voltage source terminal and a load terminal, said dc-dc converters each comprising an inductor for delivering a current to said load terminal; a controller for controlling a switching network for connecting and disconnecting said inductor to one of said voltage source terminal and ground; and an output capacitor connected in parallel with said load terminal for supplying an output voltage signal, said controller comprising:a first integrator circuit connected to said output capacitor for generating an integrated output voltage signal; n second integrator circuits, each having an inverting input connected to said inductor of each of said n dc-dc converters, and a non-inverting input connected to receive said integrated output voltage signal; and n-comparators for outputting a duty cycle signal for said switching networks in each of said n dc-dc converters, each of said n-comparators for comparing an output signal from one of said n-second integrator circuits to a triangle wave; and a resistive capacitive (RC) network connected between said inductor and ground, and wherein said inverting input of each of said n second integrator circuits is connected to said inductor through said RC network.