The ICs provide a high power density, therefore careful thermal management is necessary. In order to ensure safe long-term operation, the device temperature should not reach higher than 125°C under normal conditions. In worst case conditions, up to 150°C can be tolerated. The thermal conditions in standstill are more critical, because – depending on the microstep position, where the standstill occurs, a single coil might carry a peak current identical to the device peak current. To ensure thermal conditions, this condition must not persist. The standstill current must be reduced to 70% of the RMS current or less. In most applications, a reduction to less than 50% of the run current is sensible, because often holding torque requirements are relaxed. This will result in energy savings.