Manual
ibaMS16xDO-2A
20
Issue 1.3
8.1.5
Toleration of inductive loads
Note
For inductive loads, the self-protection is only for preventing the direct destruction of
the load switch by rebound voltages that are too high. The rebound energy heats up
the load switch. There is no over temperature protection for this problem. This is why
circuiting with inductive loads needs to be planned carefully, considering all failure sce-
narios. Otherwise, it can result in a spontaneous destruction of the load switch.
When switching off the inductances, the rebound voltage is limited by the device itself.
Hence, a damage of the load switch is prevented up to a certain load.
8.1.6
Overvoltage protection
Temporary (transient) overvoltages of the channel compared to all other potentials are
buffered up to 2.5 kV by isolation.
8.1.7
Reverse current and polarity reversal protection
If a load generates itself a positive voltage above U
ext
, or is connected to a higher poten-
tial than is applied to the +channel, the load switch will be operated inverse (current flow
in reverse direction compared to normal operation). In inverse operation, the switch can-
not be switched off and its internal resistance is higher than in normal operation.
8.1.8
Fire protection
A fuse guarantees the safety of the product, in case the channels are overloaded by
exceeding the limit values that are tolerable for the self protective functions, by inadmis-
sible operating conditions or by a defect on the output channel.
Note
The fuse is not designed to protect the load switch from damages.
The fuse cannot be replaced by the user.
