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:
Feb. 23, 2010
Filed:
Oct. 20, 2006
Method for correcting a harmonic distortion of a power bridge, in particular for a class d amplifier
Federico Forte, Novara, IT;
Marcello Gagliardi, Novara, IT;
Federico Forte, Novara, IT;
Marcello Gagliardi, Novara, IT;
STMicroelectronics S.r.l., Agrate Brianza, IT;
Abstract
To correct for harmonic distortion of a power bridge, the form of a pulse at the output of the power bridge and of estimate of non idealities under different current conditions is acquired. An estimate of a current at the output of the power bridge is also acquired. The switching control signal applied to the power bridge is then regulated based on the acquired estimates. More specifically, an area error introduced by the estimated non-idealities of the power bridge for a certain output current is determined and the edges of the switching control signal input to the power bridge are temporally shifted in response to the determined area error so as to account for the determined area error and correct for harmonic distortion concerns in the output signal.