Application notes

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6

Application notes

6.1

Motor selection

Some stepper motors are not designed for continuous operation at maximum current. As the

circuit drives a constant current through the motor, its temperature might increase

excessively both at low and high speed operation.

Also, some stepper motors have such high core losses that they are not suited for switch

mode current regulation.

6.2

Unused inputs

Unused inputs should be connected to proper voltage levels in order to get the highest noise

immunity.

6.3

Interference

As the circuit operates with switch mode current regulation, interference generation

problems might arise in some applications. A good measure might then be to decouple the

circuit with a 15 nF ceramic capacitor, located near the package between power

See

Section 4: Functional blocks.