Verstärker und Verstärkersteuerungsverfahren

Details

Veröffentlichungs-Nr.

EP2458732

Aktenzeichen

EP10192805

Anmeldetag

26. November 2010

Veröffentlichung

2. Oktober 2013

Erteilung

2. Oktober 2013

Rechtsraum

EP

IPC

H03F3/217

Abstract

Disclosed is a class D amplifier (300) comprising a modulation stage (110) having a first input (112) for receiving an input signal (212) and an output for producing a modulated version (216) of the input signal; a plurality of power stages (130), each power stage being responsive to said modulation stage and comprising a first switch (132) and a second switch (134) coupled in series between a first voltage source (140) and a second voltage source (150), each power stage comprising an output node (136) between the first switch and the second switch; and a power stage control circuit (340) for measuring the input signal level and enabling a selected number of the power stages as a function of the measured input signal level. A method for controlling such a class D amplifier is also disclosed.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande

Fachgebiete