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:
May. 29, 2018
Filed:
Feb. 18, 2016
Telefonaktiebolaget L M Ericsson (Publ), Stockholm, SE;
Magnus Karlsson, Oskarshamn, SE;
Oscar Persson, Kalmar, SE;
Telefonaktiebolaget LM Ericsson (publ), Stockholm, SE;
Abstract
An isolated fly-buck converter is provided for converting an input voltage to an output voltage, and for generating a voltage indicative of the input voltage. The isolated fly-buck converter comprises on its secondary side an input voltage sensing circuit for generating the voltage indicative of the input voltage, the input voltage sensing circuit comprising a capacitive element and a rectifying element connected in series. The input voltage sensing circuit is connected across a secondary winding of the isolated fly-buck converter such that the rectifying element prevents current from flowing through the input voltage sensing circuit during the fly-buck phase of operation of the converter. The input voltage sensing circuit also has a voltage buffer arranged to buffer a voltage which is indicative of a sum of the output voltage of the converter and the voltage over the capacitive element, and output the buffered voltage or a voltage based on the buffered voltage as the voltage that is indicative of the input voltage. The output of the voltage buffer is connected to ground via a first resistive element in series with a parallel combination of a second resistive element and a third capacitive element.