Method and apparatus for power converter for class D audio...

Details Method and apparatus for power converter for class D audio... Method and apparatus for power converter for class D audio...

2009-06-12

2010-11-23

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including class d amplifier

C330S297000

Reexamination Certificate

active

07839215

ABSTRACT:
A method and apparatus for power conversion in a class D amplifier is provided. The power conversion is achieved using synchronous rectifiers in a regulated half bridge power supply, taking the sum of the positive and negative rails as feedback, in order facilitate energy transfer between positive and negative output rails. This minimizes the effects of off side charging and rail sag, as well as achieving good line regulation, while allowing use of very small, low value output capacitors.

REFERENCES:
patent: 5986895 (1999-11-01), Stewart et al.
patent: 6169681 (2001-01-01), Kemp et al.
patent: 2009/0102295 (2009-04-01), Petersen

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