The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 02, 2009
Filed:
Mar. 28, 2007
Applicants:
Pietro Mario Adduci, Settimo Milanese, IT;
Edoardo Botti, Vigevano, IT;
Inventors:
Pietro Mario Adduci, Settimo Milanese, IT;
Edoardo Botti, Vigevano, IT;
Assignee:
STMicroelecronics S.r.l., Agrate Brianza (MI), IT;
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/217 (2006.01);
U.S. Cl.
CPC ...
Abstract
A feedback architecture for a PWM switching audio amplifier is, capable of compensating the effects of the demodulation filter through at least two feedback paths of the voltage applied to a load without degrading the overall loop gain of the device. Each of the feedback paths may include a respective network or filter for compensating a respective frequency pole of the cascade low-pass filter+load and establishing a certain band pass. These networks or filters may be passive networks.