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.
Included hardware
The DRV8434A stepper motor driver carrier ships with one 1×16-pin breakaway 0.1? male header. The headers can be soldered in for use with solderless breadboards or 0.1? female connectors. You can also solder your motor leads and other connections directly to the board. For a version of this carrier with header pins already installed, see item PO3765.
Dimensions
- Size: 0.6? × 0.8?
- Weight: 1.3 g. Without included optional headers.
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?: N
