App note: Common-Mode transients in current sense applications

Posted on Sunday, February 1st, 2015 in app notes by DP


Transient considerations in current sensing especially in motor and solenoids, app note(PDF) from Analog Devices.

Current sense amplifiers are used in a variety of applications, such as motor or solenoid control, load current monitoring, and fault detection. In such applications, it is typical for the input common-mode voltage to swing from ground to a certain highside supply. However, while a user may work with the assumption that the input common-mode swings are limited to this highside supply, there are transient voltages that must be considered. The result of these transients is that a supposed low voltage application tends to appear as a high voltage application, and the current sense amplifier must be robust enough to handle these occurrences.

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One Response to “App note: Common-Mode transients in current sense applications”

  1. Texpier says:

    The courrent flow well, when the gate use a staded of the true gate, but when the gate change the true, the value of the current is opocit to the first staded, and the low.

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