Internal compensation for power management integrated circuits

Patent metadata

Field	Value
Publication number	US-9018929-B2
Application number	US-201313851624-A
Country	US
Kind code	B2
Filing date	Mar 27, 2013
Priority date	Mar 15, 2013
Publication date	Apr 28, 2015
Grant date	Apr 28, 2015

Abstract

A voltage regulator integrated circuit comprises a control circuit driving at least one power switch to provide a regulated voltage at an output of an inductor/capacitor (LC) circuit coupled to the at least one power switch; 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 a compensation network coupled to an output of the error amplifier and configured to provide a compensation voltage. The compensation network includes at least one digitally programmable resistor array and at least one digitally programmable capacitor array. Each array provides a plurality of user selectable component values. The control circuit includes a pulse modulator configured to modulate an input voltage based on the compensation voltage.

First claim

What is claimed is:

1. A voltage regulator integrated circuit comprising:
a control circuit driving at least one power switch to provide a regulated voltage at an output of an inductor/capacitor (LC) circuit coupled to the at least one power switch;
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
a compensation network coupled to an output of the error ampl…

Assignees

• Intersil Americas LLC

Inventors

• Isham Robert H

Classifications

• H02M2001/0025

  Electricity · mapped topic

• H02M3/157 Primary

  Electricity · mapped topic

• H02M3/158

  Electricity · mapped topic

• H02M1/0025

  Electricity · mapped topic