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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The EasyDriver has an on board voltage regulator for the digital interface that can be set to 5V or 3. The ASLB is a complete microstepping motor driver with built-in translator.

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. If this is not your local representative, find your local sales rep here. This one is complicated – please see the datasheet for more information. The ASLB includes a fixed off-time current regulator that has the ability to operate in slow, fast, or mixed current-decay modes.

They require a dual H-bridge to drive them. The microstep select MS1 and MS2 pins of the A are broken out allowing adjustments to the microstepping resolution. The translator is the key to the easy implementation of the ASLB. This needs to be a 0V to 5V or 0V to 3. Affichages Lire Voir le texte source Historique.


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. There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program.

There are no news items available for this product. Special power-up sequencing is not required.

Arduino + Stepper (A3967) EasyStepper

EasyDriver drives bi-polar motors, and motors wired as bi-polar i. Do not connect or allegrro a motor while the driver is energized. M odifying a 5V 28byj step motor from unipolar to bipolar.

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. These digital inputs control the microstepping mode. Bipolar stepper, requires 2 full H-bridges! This is the power input to the Easy Driver. This should be a 6V to 30V, 2A or more power supply that is clean low ripple. This normally high input signal will reset the internal translator and disable all output drivers when pulled low.

This will cause permanent damage to the A chip.

Allegro MicroSystems – A Microstepping Driver with Translator

Bipolar stepper motors always have only 4 wires. Flyback diodes are required to prevent voltage spikes when the power to the coil is turned off alllegro the stepper motor acts like a generator briefly back-emf.


The tabs are at ground potential and need no insulation.

Connect this to the positive power supply lead. See below diagrams for how to hook these up. This current-decay control scheme results in reduced audible motor noise, increased step accuracy, and reduced power dissipation. Espaces de noms Page Discussion.

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. lalegro

Arduino + Stepper (A) EasyStepper |

We’ll notify you when there are updates to this product. Bipolar motors offer increased torque compared to unipolar motors. We default it to slow decay mode, but you can override with your own voltage on this pin.

Ce site contient essentiellement des notes de travail. Each rising edge of this signal will cause one step or microstep to be taken. The sleep and enable pins are also broken out for further control.

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