Product Description
This breakout board for TI’s DRV8434A microstepping bipolar stepper motor driver offers microstepping down to 1/256-step and operates from 4.5 V to 48 V. It can deliver up to approximately 1.2 A per phase continuously without a heat sink or forced air flow (up to 2 A peak). The driver has integrated stall detection and uses a ripple control algorithm that allows tight regulation of current level and increased motor efficiency. The module has a pinout and interface that are very similar to that of our popular A4988 carriers, so it can be used as a drop-in replacement for those boards in many applications. It features built-in protection against under-voltage, over-current, and over-temperature conditions.
This product is a carrier board or breakout board for the DRV8434A stepper motor driver from Texas Instruments (TI); we therefore recommend careful reading of the DRV8434A datasheet before using this product. This stepper motor driver lets you control one bipolar stepper motor at up to approximately 1.2 A per phase continuously without a heat sink or forced air flow.
Features
- 4.5 V to 48 V supply voltage range
- Can deliver 1.2 A per phase continuously without additional cooling
- Built-in regulator (no external logic voltage supply needed)
- Can interface directly with 1.8 V, 3.3 V and 5 V systems
- Simple step and direction control interface
- Eleven different step resolutions: full-step with 100% current, full-step with 70% current, non-circular 1/2-step, 1/2-step, 1/4-step, 1/8-step, 1/16-step, 1/32-step, 1/64-step, 1/128-step, 1/256-step
- Adjustable current control lets you set the maximum current output, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
- Integrated stall detection with three GPIO pins
- Ripple control algorithm (decay mode) that allows tight regulation of current level and increased motor efficiency
- Over-temperature thermal shutdown, over-current protection, open load detection ,under-voltage lockout, and charge pump over-voltage protection
- Driver IC integrates spread spectrum clocking of its internal oscillator and charge pump for reduced EMI
- 4-layer, 2 oz copper PCB for improved heat dissipation
- Exposed solderable ground pad below the driver IC on the bottom of the PCB
- Module size, pinout, and interface match those of our A4988 stepper motor driver carriers in most respects
This product ships with all surface-mount components—including the DRV8434A driver IC—installed as shown in the product picture.
Dimensions
- Size: 0.6? × 0.8?
- Weight: 2.4 g.
General specifications
- Minimum operating voltage: 4.5 V. Inputs below 6 V reduce the maximum settable current limit. With 4.5 V in the maximum settable limit is 1.75 A.
- Maximum operating voltage: 48 V
- Continuous current per phase: 1.2 A. Without a heat sink or forced air flow.
- Maximum current per phase: 2 A. With sufficient additional cooling.
- Minimum logic voltage: 1.8 V. Logic high threshold varies for two-state, tri-state, and quad-state pins.
- Maximum logic voltage: 5.5 V. Absolute maximum voltage on any input is 5.75 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: potentiometer
- Reverse voltage protection?: N
- Header pins soldered?: Y
