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AssigneeAerojet Rocketdyne, Inc.
InventorsBryce HESTERMAN, Alexandr L. KRISTALINSKI
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A circuit (100) 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.
A system for providing short-circuit protection for a Switching Power Converter (“SPC”), comprising:
A circuit for providing protection from short circuits, comprising:
A method, comprising:
Dependencies are inferred from the claim text.