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:
Jul. 22, 2003
Filed:
Apr. 02, 2001
Applicant:
Inventors:
Eric Walburger, Austin, TX (US);
John Laurence Melanson, Austin, TX (US);
Assignee:
Cirrus Logic, Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03F 3/38 ;
U.S. Cl.
CPC ...
H03F 3/38 ;
Abstract
An apparatus and method for limiting the output current in a switched mode amplifier are implemented. The apparatus includes a driver amplifier configurable for selective operation in one of three modes. The amplifier is operable for transitioning between the first mode and one of the second and third modes in response to a state of an output node of the driver. Bias circuitry, configurable for selective coupling to the driver amplifier is operable for limiting the output current of the amplifier in the first operating mode.