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:
Jun. 04, 2013
Filed:
Dec. 01, 2011
Magnus Karlsson, Oskarshamn, SE;
Anders Kullman, Kalmar, SE;
Jonas Malmberg, Färjestaden, SE;
Fredrik Wahledow, Färjestaden, SE;
Magnus Karlsson, Oskarshamn, SE;
Anders Kullman, Kalmar, SE;
Jonas Malmberg, Färjestaden, SE;
Fredrik Wahledow, Färjestaden, SE;
Telefonaktiebolaget LM Ericsson (Publ), Stockholm, SE;
Abstract
An isolated switched mode power supply (SMPS) is disclosed. The SMPS comprises a switching controller to generate start-up and operational switching control signals. The SMPS further includes a transformer, having a primary winding, and a full-bridge drive circuit to drive the primary winding. The full-bridge drive circuit comprises a first switching element, a boot-strap dnving circuit, and a second switching element. The switching controller is further used to start up isolated SMPS by determining a duty cycle for operational control signals and generating the start-up switching control signals.