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. 12, 2012
Filed:
Mar. 12, 2007
George Young, Blackrock, IE;
George Young, Blackrock, IE;
Texas Instruments (Cork) Limited, Dublin, IE;
Abstract
This invention relates to a power converter () comprising a converter input (), a converter output, a power factor pre-regulation stage (), an isolation stage () and a control unit (). The power factor pre-regulation stage () further comprises a buck power factor correction (PFC) circuit () and a bulk capacitor () fed by the buck PFC circuit. The amount of line current provided to the bulk capacitor () by the buck PFC circuit () may be adjusted according to the converter requirements in order to keep the voltage across the bulk capacitor () sufficient to ensure uniform operation of the power converter. Monitoring of the voltage across the bulk capacitor () and monitoring of the isolation stage () output current is provided to determine when additional current is to be applied to the bulk capacitor () and to ensure the power converter () operates within pre-defined parameters.