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:
Mar. 20, 2007
Filed:
Nov. 02, 2004
Kerry B. Phillips, Cedar Rapids, IA (US);
David S. Ripley, Cedar Rapids, IA (US);
Kerry B. Phillips, Cedar Rapids, IA (US);
David S. Ripley, Cedar Rapids, IA (US);
Skyworks Solutions, Inc., Irvine, CA (US);
Abstract
According to one embodiment of the invention, a circuit arrangement includes a regulator circuit. The circuit arrangement further includes a current limit circuit coupled to the regulator circuit. The circuit arrangement further includes a power amplifier coupled to the regulator circuit, where the power amplifier is configured to draw a first current from the regular circuit. The current limit circuit is configured to decrease the first current when the first current causes a second current in the current limit circuit to be greater than a reference current. According to this embodiment, the second current is a mirror current of the first current. The current limit circuit includes a current sink, where the current sink is configured to sink the reference current to ground. The current limit circuit further includes a feedback loop, where the feedback loop causes the second current to be substantially equal to the reference current.