TB67S249FTG Stepper Motor Driver Compact Carrier (Header Pins Soldered)

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Pololu item #: 3097
Brand: Pololu
Status: Active and Preferred 
RoHS 3 compliant


This version of our TB67S249FTG Stepper Motor Driver Compact Carrier ships with male header pins installed, so no soldering is required to use it with an appropriate 16-pin socket or solderless breadboard. The TB67S249FTG has a wide operating voltage range of 10 V to 47 V, and our carrier board can deliver approximately 1.6 A per phase continuously without a heat sink or forced air flow (up to 4.5 A peak). Please see the TB67S249FTG Stepper Motor Driver Compact Carrier product page for more information about the driver.

Alternatives available with variations in these parameter(s): continuous current per phase header pins soldered? Select variant…

Compare all products in TB67S2x9FTG Stepper Motor Driver Carriers or 16-pin Stepper Motor Drivers.

Pictures

TB67S249FTG Stepper Motor Driver Compact Carrier (Header Pins Soldered).

TB67S249FTG Stepper Motor Driver Compact Carrier (top view).

TB67S2x9FTG Stepper Motor Driver Compact Carrier, bottom view with dimensions.

Bridge this SMT jumper with solder to change the AGC bottom limit from 60% to 80% on the TB67S2x9FTG Stepper Motor Driver Compact Carrier.

Minimal wiring diagram for connecting a microcontroller to a TB67S2x9FTG stepper motor driver compact carrier.

Schematic diagram of the TB67S249FTG/TB67S279FTG Stepper Motor Driver Compact Carrier.




This version of our TB67S249FTG Stepper Motor Driver Compact Carrier ships with male header pins installed as shown in the main product picture, so no soldering is required to use it with an appropriate 16-pin socket or solderless breadboard. Please see the TB67S249FTG Stepper Motor Driver Compact Carrier product page for more information about the driver.

Dimensions

Size: 0.6″ × 0.8″
Weight: 2.6 g

General specifications

Motor driver: TB67S249FTG
Minimum operating voltage: 10 V
Maximum operating voltage: 47 V
Continuous current per phase: 1.6 A
Maximum current per phase: 4.5 A
Minimum logic voltage: 2 V
Maximum logic voltage: 5.5 V
Microstep resolutions: full, non-circular 1/2, 1/2, 1/4, 1/8, 1/16, 1/32
Current limit control: potentiometer
Reverse voltage protection?: N
Header pins soldered?: Y

Identifying markings

PCB dev codes: md34a
Other PCB markings: 0J11687

File downloads

Recommended links

Frequently-asked questions

I want to control a 3.9 V, 600 mA bipolar stepper motor, but this driver has a minimum operating voltage above 3.9 V. Can I use this driver without damaging the stepper motor?

Yes. To avoid damaging your stepper motor, you want to avoid exceeding the rated current, which is 600 mA in this instance. All of our stepper motor drivers let you limit the maximum current, so as long as you set the limit below the rated current, you will be within spec for your motor, even if the voltage exceeds the rated voltage. The voltage rating is just the voltage at which each coil draws the rated current, so the coils of your stepper motor will draw 600 mA at 3.9 V. By using a higher voltage along with active current limiting, the current is able to ramp up faster, which lets you achieve higher step rates than you could using the rated voltage.

If you do want to use a lower motor supply voltage for other reasons, consider using our DRV8834 or STSPIN-220 low-voltage stepper motor drivers.

Do I really need to set the current limit on my stepper motor driver before using it, and if so, how do I do it?

Yes, you do! Setting the current limit on your stepper motor driver carrier before connecting your motor is essential to making sure that it runs properly. An appropriate current limit also ensures that your motor is not allowed to draw more current than it or your driver can handle, since that is likely to damage one or both of them.

Setting the current limit on our A4988, DRV8825, DRV8824, DRV8834, DRV8880, STSPINx20, and TB67SxFTG stepper motor driver carriers is done by adjusting the on-board potentiometer. We strongly recommend using a multimeter to measure the VREF voltage while setting the current limit so you can be sure you set it to an appropriate value (just turning the pot randomly until things seem to work is not a good approach). The following video has more details on setting the current limit:

My stepper motor driver is overheating, but my power supply shows it’s drawing significantly less than the continuous current rating listed on the product page. What gives?
Measuring the current draw at the power supply does not necessarily provide an accurate measure of the coil current. Since the input voltage to the driver can be significantly higher than the coil voltage, the measured current on the power supply can be quite a bit lower than the coil current (the driver and coil basically act like a switching step-down power supply). Also, if the supply voltage is very high compared to what the motor needs to achieve the set current, the duty cycle will be very low, which also leads to significant differences between average and RMS currents: RMS current is what is relevant for power dissipation in the chip but many power supplies won’t show that. You should base your assessment of the coil current on the set current limit or by measuring the actual coil currents.
How do I connect my stepper motor to a bipolar stepper motor driver?
The answer to this question depends on the type of your stepper motor and how many wires it has. We have an application note that details possible methods for connecting stepper motors to bipolar drivers and controllers and the advantages and disadvantages of each option.

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