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With inductive loads, self-protection only extends to preventing direct destruction of the load switch due to reverse voltages that are too high. However, the rebound energy heats up the load switch without any over-temperature protection. This is why circuiting with inductive loads needs to be planned carefully, considering all failure scenarios. 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.