Class D amplifier circuit

Details Class D amplifier circuit Class D amplifier circuit

2010-03-10

2011-10-25

Nguyen, Khanh (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S20700P

Reexamination Certificate

active

08044719

ABSTRACT:
A class D amplifier circuit for generating a pulse signal whose pulse width is modulated in response to an input signal, the class D amplifier circuit includes first to fifth switching elements, a first capacitance element and a control section. The control section controls transition between a conduction state and a non-conduction state of each of the first to fifth switching elements to control a current direction flowing into a load having a first end electrically connected to the output end and a second end set to the reference potential, so that the current flows from the first end of the load to the second end of the load at a first timing and the current flows from the second end of the load to the first end of the load at a second timing.

REFERENCES:
patent: 5610553 (1997-03-01), Kirn
patent: 2010/0090764 (2010-04-01), Buter et al.
patent: 2006217106 (2006-08-01), None
patent: A-2007-325236 (2007-12-01), None
Korean Intellectual Property Office “Notice of Submission of Argument” dated Apr. 25, 2011, Application No. 10-2010-0020793, 3 pages.

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