Class D amplifier

Details Class D amplifier Class D amplifier

2008-07-21

2010-11-02

Mottola, Steven J (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S20700P

Reexamination Certificate

active

07825725

ABSTRACT:
Class D amplifier is resistant to interferences. Binary output signals y1and y2,are generated from input signal s1, delivered to input terminal IN, to drive a load connected across output terminals OUTP and OUTN. Pulse generating circuit10generates a pulse width modulated pulse signal y0from input signal s1, inverted signal of the output signal y1and output signal y2.Differential pulse generating circuit14receives pulse signal y0and inverts low and high levels of pulse signal y0, while shifting the resulting signal by half period from the pulse signal y0, to generate a pulse signal y3.Pulse amplifier11areceives pulse signal y0and generates output signal y1supplied to output terminal OUTP. Pulse amplifier11breceives pulse signal y3and generates output signal y2delivered to output terminal OUTN.

REFERENCES:
patent: 6262632 (2001-07-01), Corsi et al.
patent: 6788137 (2004-09-01), Morita
patent: 7312657 (2007-12-01), Kurokawa
patent: 7538611 (2009-05-01), Chen et al.
patent: 2005/0231280 (2005-10-01), Kurokawa
patent: 2005-303814 (2005-10-01), None

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