3.4 Detailed Design Considerations

When using a peripheral driver for stepper motor driving applications there are a few design considerations that should be highlighted.

1. V_CC1 and V_CC2 should be within the acceptable recommended voltage range - see device Electrical Characteristics for further information.
2. Logic Inputs should be within the acceptable recommended voltage range - see device Electrical Characteristics for further information.
3. The current through each motor phase (I_phase) is a function of the high-level output voltage (V_OH), the low-level output voltage (V_OL) and the phase resistance (R_phase)
   • Equation 2 provides the equation for the Relay Current
   • See device Electrical Characteristics for the maximum allowable continuous output current per channel (I_O), high-level output voltage (V_OH), and low-level output voltage (V_OL)
   Equation 2.