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:
Apr. 03, 2012
Filed:
Jul. 02, 2010
Applicant:
Han Martijn Schuurmans, Wijchen, NL;
Inventor:
Han Martijn Schuurmans, Wijchen, NL;
Assignee:
NXP B.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03F 3/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
A class H amplifier circuit includes a Buck converterand a charge pumpwhich are used to generate voltages which are used in turn to power an output driver. A feedback pathcontrols the loop. The circuit is particularly suitable as a high efficiency circuit for driving headphones or loudspeakers.