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:
Nov. 11, 2008
Filed:
May. 31, 2006
Applicant:
Walter S. Schopfer, Austin, TX (US);
Inventor:
Walter S. Schopfer, Austin, TX (US);
Assignee:
Silicon Laboratories Inc., Austin, TX (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02H 3/08 (2006.01); H02H 9/02 (2006.01); H02H 7/00 (2006.01); H02H 9/00 (2006.01); G05F 1/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
In one embodiment, the present invention includes an apparatus having a current sensor to generate an overcurrent output if a current level of a switched power supply is greater than a predetermined threshold, and a pulse width modulation (PWM) controller coupled to the current sensor. At lower load levels, the PWM controller may disable a drive signal to the switched power supply upon receipt of the overcurrent output, but at high load levels the drive signal is not disabled, even in the presence of the overcurrent condition.