Allegro MicroSystems, LLC A PMIC – Motor Drivers, Controllers parts available at DigiKey. The EasyDriver is a simple to use stepper motor driver based on an Allegro A chip. It is compatible with anything that can output a digital 0. Microstepping Driver with Translator. A 2. Allegro MicroSystems, Inc. Northeast Cutoff. Worcester, Massachusetts U.S.A.. .

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This is the power input to the Easy Driver.

Affichages Lire Voir le texte source Historique. Flyback diodes are required to prevent voltage spikes when the power to the coil is turned off and the stepper motor acts like a generator briefly back-emf.

This normally high input signal will reset the internal translator and disable all output drivers when pulled low. See below diagrams for how to hook these up. This will cause permanent damage to the A chip. You can also connect 5,6 or 8 wire unipolar motors and connect them as bipolar motors by not connecting the common lead s. Bipolar motors offer increased torque compared to unipolar motors.

If this is not your local representative, find your local sales rep here. Connect the negative side of your power supply, as well as from any other boards you are using to drive the Easy Driver to one or more of the GND pins.

A and B are the two coils of the motor, and can swap the two wires for a given coil it will just reverse the direction of the motor.


It is compatible with anything that can output a digital 0 to 5V pulse or 0 to 3. This needs to be a 0V to 5V or 0V to 3. This one is complicated – please see the datasheet for more information. We’ll notify you when there are updates to this product. This normally high input signal will minimize power consumption by disabling internal circuitry and the output drivers when pulled low. The EasyDriver is a simple to use stepper motor driver based on an Allegro A chip.

Ce site contient essentiellement des notes de travail. Click the image to view larger. These digital inputs control the microstepping mode. The translator is the key to the easy implementation of the ASLB. Bipolar stepper motors always have only 4 wires. We default it to slow decay mode, but you can override with your own voltage on this pin.

This should be a 6V to 30V, 2A or more power supply that is clean low ripple. M odifying a 5V 28byj step motor from unipolar to bipolar. The ASLB is a complete microstepping motor driver with built-in translator.

This current-decay control scheme results in reduced audible motor noise, increased step accuracy, and reduced power dissipation. There are no news items available for this product. There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program.

Special power-up sequencing is not required. Bipolar stepper, requires 2 full H-bridges! By simply inputting one pulse on the STEP input the motor will take one step full, half, quarter, or eighth depending on two logic inputs.

Allegro MicroSystems – A Microstepping Driver with Translator

The microstep select MS1 and MS2 pins of the A are broken out allowing adjustments to the microstepping resolution. Menu de navigation Outils personnels Se connecter. They require a dual H-bridge to drive them. Connect this to the positive power supply lead. The ASLB includes a fixed off-time current regulator that has the ability to operate in slow, fast, or mixed current-decay modes. The tabs are at ground potential and need no insulation. Each rising edge of this signal will cause one step or microstep to be taken.


The sleep and enable pins are also allegrk out for further control. They are all connected together inside the board.

Week 14: Machine Design

This EasyDriver has been co-designed with Brian Schmalz. The EasyDriver requires a 6V to 30V supply to power the motor and can power any voltage of stepper motor. Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout UVLO and crossover-current protection.

They will not have as much torque as bipolar motors due to thinner wire with a higher electrical resistance used in the coils bifilar windings. Espaces de noms Page Discussion. The EasyDriver has an on board voltage regulator for the digital interface that can be set to 5V or 3. Do not connect or disconnect a motor while the driver is energized.

EasyDriver drives bi-polar motors, and motors wired as bi-polar i.