QI am using magnetic isolators in an isolated gate drive circuit which is
typically operated at around 20kv/Âµs.
The data sheet for ADuM1100 says this is OK.
However there is a strong possibility the output will be shorted out in which
case the common mode dv/dt of the isolator is around 300kv/Âµs.
Under these conditions I do not care if the output logic is in an indeterminate
state, but I would like to know whether a dv/dt of 300kv/Âµs will destroy the
isolator or not.
AThe absolute maximum ratings state that any common mode voltage gradient >
+/-100kV/s may cause damage to the part. Therefore if your application expeses
the part to common mode voltage gradients in excess of +/-100kV/s then the part
risks being damaged and the long term reliability of the part may be affected.