Patent ID: 9257906
Filing Date: 2016-02-09
CPC Classification: H02M

Claim Text:
1. A multiphase voltage regulator integrated circuit comprising: a control circuit driving at least two phases to provide a regulated output voltage; an error amplifier having a first input coupled to a feedback signal representative of the regulated output voltage and a second input coupled to a reference signal; and an internal compensation network coupled to an output of the error amplifier and configured to provide a compensation voltage; wherein the internal compensation network includes one or more digitally programmable resistor arrays and one or more digitally programmable capacitor arrays, each array providing a plurality of user selectable component values; wherein at least one of the one or more digitally programmable capacitor arrays is configured to dynamically change a capacitor value of the respective digitally programmable capacitor array based on a change in a number of active phases of the multiphase voltage regulator; wherein the control circuit includes a pulse modulator configured to regulate the output voltage based on the compensation voltage.