Electronic fuse for a power supply
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United States of America Patent
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-
Jan 31, 2023
Grant Date -
Dec 10, 2020
app pub date -
Jun 3, 2020
filing date -
Jun 5, 2019
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An electronic fuse for a power supply includes at least two switching elements and a regulation unit, wherein a first switching element is arranged in a main branch, where the regulation unit is switches off the first switching element when a predetermined threshold value is exceeded by a prevailing current value, and a second switching element that is also actuated by the regulation unit, which is arranged in an auxiliary branch parallel to the first switching element and assumes a substantial proportion of a resulting power loss when an overload occurs, and the second switching element, which is arranged in at least one auxiliary branch, is configured or optimized for linear operation, and where the at least two switching elements are configured such that the line resistance of the second switching element is at least twice the line resistance of the first switching element.
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