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What should I be aware of when choosing an LDO or a DC/DC converter as a power supply for a motor driver, considering sudden load changes such as when the motor is started?
Where motor applications are concerned, in many cases there are concerns about back emfs in particular; if a back emf exceeds the rated voltage for the power supply IC, the latter could be destroyed. Hence back emfs must be taken into account when choosing a power supply IC with an adequate voltage margin.