TMC2208 V1.2 Sillent Stepper Motor Driver 3D Printer Module

TMC2208 V1.2 Sillent Stepper Motor Driver 3D Printer Module

Features

UART configuration interface (9600-500k Baud)

Power tube built-in drive current 1.4A ,peak current 2A, voltage range 4.75V-36V

Up to 256 native microsteps (without interpolation)

CoolStep ™ current dynamic adjustment technology, can save 70% of the energy

stealthChop2 – faster motor acceleration/deceleration than stealthChop

dcStep ™, stallGuard2 ™ stall detection technology

Automatic stealthChop and spreadCycle switchover depending on velocity

Hardware compatible with StepStick and Pololu A4988 Stepper Driver

Components on bottom PCB side for better heat emission

Automatic standby current reduction

SteaClthhop mute technology

spreadCycle – highly dynamic motor control chopper

​ The TMC2208 outputs continuous motor current up to 1.4A and peak current up to 2A. Therefore, the reference voltage of the driver module should not exceed 1V. At the same time, the driver module must be dissipated, otherwise it will affect the life of the driver module.

The best way to set the motor current is by measuring the voltage on the Vref pin (0…2.5V) and adjusting the voltage with the potentiometer. The maximum settable motor current is 1.77A RMS (0.11Ohm sense resistors), but the SilentStepSticks can only be used up to 1.2A RMS.

Irms = (Vref * 1.77A) / 2.5V = Vref * 0.71

Vref = (Irms * 2.5V) / 1.77A = Irms * 1.41 = Imax

Vref -> Voltage on Vref pin

Irms -> RMS (Root Mean Square) current per phase (Irms = Imax / 1.41)

Imax -> Maximum current per phase (Imax = Irms * 1.41)

​ 1. Vref measures Gnd and the voltage at the middle of the potentiometer.

​ 2. Do not connect the motor when measuring the voltage, otherwise it is easy to burn the driver.

​ 3. Power should be connected when measuring voltage, do not just connect USB power supply.

​ 4. Please pay special attention to directions!