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:
Dec. 25, 2018
Filed:
Aug. 02, 2016
Aerojet Rocketdyne, Inc., Sacramento, CA (US);
Bryce Hesterman, Redmond, WA (US);
Alexandr L. Kristalinski, Kirkland, WA (US);
Aerojet Rocketdyne, Sacramento, CA (US);
Abstract
A circuit () for protecting a Switching Power Converter ('SPC') when a short-circuit load condition occurs. The SPC has an output current sensor utilizing at least one current transformer that has a primary winding connected in series with a rectifier and has a magnetic core that should avoid saturation. A pulse-width modulator includes a skip controller providing a series of control pulses to at least one switch. A control pulse is skipped when an abnormally low load resistance causes an input current ramp signal to exceed an input current setpoint signal proximate a start time of a next control pulse of the series and the output current is greater than a predetermined threshold. Operation of the SPC is stopped if more than a predetermined number of consecutive switching cycles are skipped to prevent operation of the SPC while the core of an output current transformer is saturated.