CURRENT SENSING SYSTEM
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United States of America
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Issued Date -
Feb 13, 2025
app pub date -
Dec 12, 2022
filing date -
Dec 12, 2022
priority date (Note) -
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Abstract
A current sensing system includes a busbar connected in a current path between a power supply and a load. The busbar includes a temperature dependent resistance with a specific temperature coefficient. An amplifier is configured to sense a voltage difference across a section of the busbar caused by a current in the current path. The current sensing system includes a temperature compensation circuit, wherein the temperature compensation circuit is effective as a temperature dependent resistance with a temperature coefficient which has a sign opposite from the resistance of the busbar. A first input of a comparator is directly or indirectly connected to a second terminal of the signal conditioning circuit. The current sensing system includes a logic circuitry, which is configured to control a state of a switch, which is disposed in the current path dependent on an output signal of the comparator.
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