Class-D amplifier and method therefor

Details Class-D amplifier and method therefor Class-D amplifier and method therefor

2006-03-03

2010-12-14

Mottola, Steven J (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

Reexamination Certificate

active

07852155

ABSTRACT:
In one embodiment, a class-D amplifier (11) is configured to form first (DP) and second (DN) PWM signals each having a duty cycle that is proportional to a received analog input signal (12) and responsively to enable a switch (31, 32) to short the outputs (13, 14) of the class-D amplifier (11) together responsively to some states of the first (DP) and second (DN) PWM signals.

REFERENCES:
patent: 3517300 (1970-06-01), McMurray
patent: 4894621 (1990-01-01), Koenig et al.
patent: 7279973 (2007-10-01), Sevenhans et al.
patent: 7382188 (2008-06-01), Talty
patent: WO2005002043 (2005-01-01), None

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