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. 08, 2010
Filed:
Dec. 26, 2007
A. Paul Brokaw, Tucson, AZ (US);
Trey Roessig, Fremont, CA (US);
A. Paul Brokaw, Tucson, AZ (US);
Trey Roessig, Fremont, CA (US);
Analog Devices, Inc., Norwood, MA (US);
Abstract
A switching power converter with a controlled startup mechanism includes a switching stage which provides a voltage Vat an output node in response to a switching control signal, with the output node adapted for connection to a non-linear load. A feedback network compares a signal which varies with the current conducted by the load (I) with a reference signal, and provides the switching control signal so as to maintain Iat a desired value. A capacitor connected to the output node provides a current Ito the feedback network which varies with dV/dt. The feedback network is arranged to limit dV/dt in response to current Iwhen Iis substantially zero. In this way, large inrush currents or damage that might otherwise occur during startup are avoided.