Voltage Regulator and Method for Providing an Output Voltage with Reduced Voltage Ripple

A digital voltage regulator and a method to regulate an output voltage at an output node based on an input voltage is presented. The regulator has a driver stage with N driver slices, with N>1. Each of the N driver slices can be activated or deactivated individually. A driver slice comprises a cu...

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Bibliographische Detailangaben
Hauptverfasser:	Tatarchenkov, Gennadii, Angeli, Alessandro, Seesink, Petrus Hendrikus, Drebinger, Stephan, Jefremow, Mihail, Rigoni, Fabio, Ciomaga, Dan
Format:	Patent
Sprache:	eng
Schlagworte:	CONTROLLING PHYSICS REGULATING SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A digital voltage regulator and a method to regulate an output voltage at an output node based on an input voltage is presented. The regulator has a driver stage with N driver slices, with N>1. Each of the N driver slices can be activated or deactivated individually. A driver slice comprises a current source to provide an output current component to the output node, if the driver slice is activated. Furthermore, the regulator has a control unit to activate a number n of the N driver slices, based on a deviation of a feedback voltage from a reference voltage, where the feedback voltage is dependent on the output voltage.