This breakout board for TIs DRV8434S microstepping bipolar stepper motor driver operates from 4.5 V to 48 V and can deliver up to approximately 1.2 A continuous per phase without a heat sink or forced air flow (2 A peak). The SPI interface allows configuration of the current limit, step mode (11 step modes from full-step through 1/256-step), decay mode, and stall detection. The driver also features built-in protection against under-voltage, over-current, and over-temperature conditions. This version of has the maximum current limit set to a fixed 2A, and SPI can be used to set the actual current limit to any of 16 evenly spaced values from 125 mA up to 2 A (i.e. in increments of 125 mA).

Specs:

• Minimum operating voltage: 4.5 V
• Maximum operating voltage: 48 V
• Continuous current per phase: 1.2 A
• Maximum current per phase: 2 A
• Minimum logic voltage: 1.8 V
• Maximum logic voltage: 5.5 V
• Microstep resolutions: full with 100% current, full with 70% current, non-circular 1/2, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256
• Current limit control: fixed 2A max with SPI scaling
• Reverse voltage protection?: N
• Header pins soldered?: N