ALLEGRO BLDC MOTOR DRIVER

ALLEGRO BLDC MOTOR DRIVER

Several operational modes are available including duty-cycle voltage control, current torque limit control and closed loop speed control. The A can be used as a stand-alone controller communicating directly with an electronic control unit ECU or it can be used in a close coupled system with a local microcontroller MCU. If this is not your local representative, find your local sales rep here. This new development kit is targeted at both the industrial and consumer markets with end applications to include power tools, lawn and garden equipment, pumps, ticketing and ATM machines and household appliances. Integrated diagnostics provide indication of under voltage, over temperature and power bridge faults and can protect the power switches under most short circuit conditions. The motor is driven using block commutation trapezoidal drive where phase commutation is determined, without the need for independent position sensors, by monitoring the motor back- EMF bemf.

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Allegro MicroSystems – Motor Driver and Interface ICs

Motor operation is controlled by a programmable PWM input that can be used to define the motor operating state and provide the proportional input for the selected operating mode. The A evaluation kit is fully compliant to 50 V and includes everything needed to spin a motor – just provide a voltage supply and a motor and you will be able to see just how simple the A can be to control a BLDC motor with a simple analog voltage or direct PWM.

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Click the image to view larger. The sensorless start-up scheme allows the A to operate over a wide range of motor and load aallegro. Further information about Allegro can be found at www.

We’ll notify you when there are updates to this product. If larger loads are needed the A has jumpers that disable the onboard bridge and provide connections to add an mootr bridge.

Spin Your Motor Instantly With Allegro’s A4915 Three-Phase BLDC Motor Driver Evaluation Kit

If this is not your local representative, find your local sales rep here. Several operational modes are available including duty-cycle voltage control, current torque limit control and closed loop speed control.

Integrated diagnostics provide indication of under voltage, over temperature and power bridge faults and can protect the power switches under most short circuit conditions.

This new development kit is targeted at both the industrial and consumer markets with end applications to include power tools, lawn and garden mottor, pumps, ticketing and ATM machines and household appliances.

Allegro Microsystems – A Demo Board Press Release

The motor is driven using block commutation trapezoidal drive where phase commutation is determined, without the need for independent position sensors, by monitoring the motor back- EMF bemf. Another feature on the evaluation board, which makes operation and evaluation simple, is blvc onboard 5 V regulator which creates the secondary supply for logic inputs.

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This innovative control motog combined with on-chip hall commutation makes it possible to efficiently control a BLDC motor with little or no micro processing power. Allegro MicroSystems, LLC is a leader in developing, manufacturing and marketing high-performance semiconductors. Operating mode and control parameters can be altered through an SPI compatible serial interface.

Gldc are indicated by a single open drain output than can be used to pull the PWM input low. The A can be used as a stand-alone controller communicating directly with an electronic control unit ECU or it can be used in a close coupled system with a local microcontroller MCU.