Current measurement techniques to compensate for shunt drift

    公开(公告)号:US10359449B2

    公开(公告)日:2019-07-23

    申请号:US15472706

    申请日:2017-03-29

    Inventor: Andreas Callanan

    Abstract: Described are various current measurement techniques that can compensate for drift in shunt resistance. Determining a resistance of a shunt resistor, e.g., coupled to a battery terminal, can include introducing a known signal in sync with the chop phases of a dual system chop scheme, chopping the known signal out in the main signal path, and explicitly extracting the known signal in a parallel, additional signal deprocessing path.

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