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:
Aug. 23, 2011
Filed:
Dec. 26, 2007
Walter Stuart Schopfer, Austin, TX (US);
Richard Bruce Webb, Austin, TX (US);
Walter Stuart Schopfer, Austin, TX (US);
Richard Bruce Webb, Austin, TX (US);
Silicon Laboratories Inc., Austin, TX (US);
Abstract
In an embodiment, a circuit device includes a network interface responsive to a powered network to receive a power supply and data and includes an electrical isolation barrier adapted to define a non-isolated power domain and an isolated power domain. The circuit device further includes a first control circuit associated with the non-isolated power domain. The first control circuit is coupled to a primary winding of a transformer to control current flow via the primary winding. The circuit device also includes a second control circuit associated with the isolated power domain. The second control circuit is coupled to a secondary winding of the transformer and is adapted to detect a power error associated with the secondary winding. The second control circuit transfers a command across the electrical isolation barrier to the first control circuit to adjust a current at the primary winding in response to detecting the power error.