TB67S128FTG Stepper Motor Driver Carrier

TB67S128FTG Stepper Motor Driver Carrier


This breakout board makes it easy to use Toshiba’s TB67S128FTG microstepping bipolar stepper motor driver, which features adjustable current limiting and microstepping down to 1/128-step. The driver has a wide operating voltage range of 6.5 V to 44 V and can deliver approximately 2.1 A per phase continuously without a heat sink or forced air flow (up to 5 A peak). It features built-in protection against under-voltage, over-current, and over-temperature conditions; our carrier board also adds reverse-voltage protection (up to 40 V).

In Stock

This product is a carrier board or breakout board for Toshiba’s TB67S128FTG stepper motor driver. This stepper motor driver offers microstep resolutions down to 1/128 of a step, and it lets you control one bipolar stepper motor at up to approximately 2.1 A per phase continuously (5 A peak) without a heat sink or forced air flow (see the Power Dissipation Considerations section below for more information.) The board breaks out every control pin and output of the TB67S128FTG, making all of the driver’s features available to the user.

Here are some of the board’s key features:

  • Two interface modes to select from:
  1. clock mode for simple step and direction control
  2. serial mode for controlling the driver’s many features through a serial interface (this mode also allows for serial control of the current limit)
  • Eight different step modes: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, 1/32-step, 1/64-step, and 1/128-step
  • Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
  • Four different decay modes: mixed decay (two timing ratios), fast decay, or Advanced Dynamic Mixed Decay (ADMD), which dynamically switches between slow and fast decay modes by monitoring the state of current decay (not according to fixed timing)
  • Configurable Active Gain Control (AGC) automatically reduces drive current to minimize power consumption and heat generation when maximum torque is not needed
  • Motor supply voltage: 6.5 V to 44 V
  • Can deliver up to approximately 2.1 A per phase continuously (5 A peak) without additional cooling
  • Can interface directly with 3.3 V and 5 V systems
  • Protection against over-current/short-circuit and over-temperature
  • Open-load detection
  • Active-low error outputs indicate over-current, over-temperature, or open-load condition
  • Carrier board adds reverse-voltage protection up to 40 V
  • Carrier board breaks out all of the TB67S128FTG pins in a compact size (1.2″ × 1.6″)
  • Exposed solderable ground pad below the driver IC on the bottom of the PCB

This product ships with all surface-mount components installed as shown in the product picture. However, soldering is required for assembly of the included through-hole parts. The following through-hole parts are included:

  • Two 1×16-pin breakaway 0.1″ male header strips
  • Three 2-pin, 3.5 mm terminal blocks (for board power and motor outputs)
  • One 0.1″ shorting block (for optionally connecting IOREF to the neighboring VCC pin when using this driver in 5 V systems)

Warning: Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver. (More generally, rewiring anything while it is powered is asking for trouble.)


Size: 1.2″ × 1.6″
Weight: 5.7 g

General specifications:

Motor driver: TB67S128FTG
Minimum operating voltage: 6.5 V
Maximum operating voltage: 44 V
Continuous current per phase: 2.1 A
Maximum current per phase: 5.0 A
Minimum logic voltage: 2 V
Maximum logic voltage: 5.5 V
Microstep resolutions: full, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128
Current limit control: potentiometer, digital, SPI-programmable
Reverse voltage protection?: Y
Header pins soldered?: N

Specific References


Customers who bought this product also bought:

16 other products in the same category: