CONSTANT POWER AVAILABILITY FOR LOAD SWITCHES WITH FOLDBACK CURRENT

Load switch supply circuits and methods are provided that allow a load switch to maintain power delivery without having the load switch encounter thermal or power overload conditions. In an example, a load switch supply circuit can include a multiplier circuit configured to receive a first represent...

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Bibliographic Details
Main Authors JASA HRVOJE, MACALUSO STEVEN
Format Patent
LanguageEnglish
Published 14.05.2015
Subjects
BASIC ELECTRONIC CIRCUITRY
CALCULATING
COMPUTING
CONTROLLING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
ELECTRICITY
PHYSICS
PULSE TECHNIQUE
REGULATING
SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
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Summary:Load switch supply circuits and methods are provided that allow a load switch to maintain power delivery without having the load switch encounter thermal or power overload conditions. In an example, a load switch supply circuit can include a multiplier circuit configured to receive a first representation of voltage across a load switch and a representation of current provided by the load switch and to provide a representation of power dissipated by the load switch, and a control amplifier configured to compare the representation of power dissipated by the load switch to a power threshold and to adjust a control terminal of the load switch to avoid cycling the load switch to an off state due to thermal overload or power overload conditions.
Bibliography:Application Number: US201414535617