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A89307

Allegro
Part Number A89307
Manufacturer Allegro
Description Automotive FOC BLDC Motor Controller
Published Nov 20, 2022
Detailed Description A89307 Automotive FOC BLDC Motor Controller FEATURES AND BENEFITS • Code-free sensorless field-oriented control (FOC) •...
Datasheet PDF File A89307 PDF File

A89307
A89307

Overview
A89307 Automotive FOC BLDC Motor Controller FEATURES AND BENEFITS • Code-free sensorless field-oriented control (FOC) • Constant speed, constant torque, constant power, and open-loop operating modes • I2C interface for speed control and status readback • Programmable, flexible in-to-output transformer • Ultra-quiet low speed operation • Proprietary non-reverse fast startup • Soft-On Soft-Off (SOSO) for quiet operation • Analog / PWM / Clock mode speed control • Closed-loop speed control • Configurable current limit • Windmill startup operation • Lock detection • Short-circuit protection (OCP) • Brake and direction inputs • Adjustable gate drive • Automotive AEC-Q100 qualified APPLICATIONS • Battery cooling fan • Radiator fan • Fuel, oil pump PACKAGE Not to scale 28-contact QFN with exposed thermal pad and wettable flank 5 mm × 5 mm × 0.
90 mm (ET package) DESCRIPTION The A89307 is a 3-phase, sensorless, brushless DC (BLDC) motor driver (gate driver) which can operate from 5.
5 to 50 V.
A field-oriented control (FOC) algorithm is fully integrated to achieve the best efficiency and acoustic noise performance.
Constant torque and constant power mode are provided as well as constant speed and open-loop operating modes.
The device also optimizes the motor startup performance in a stationary condition, a windmill condition, and even in a reverse windmill condition.
Motor speed is controlled through analog, PWM, or CLOCK input.
Closed-loop speed control is optional, and RPM-to-clock frequency ratio is programmable.
A simple I2C interface is provided for setting motor-rated voltage, rated current, rated speed, resistance, and startup profiles.
The I2C interface is also used for on/off control, speed control, and speed readback.
The A89307 is available in a 28-contact 5 mm × 5 mm QFN with exposed thermal pad (suffix ET) and wettable flank.
The package is lead (Pb) free, with 100% matte-tin leadframe plating.
FG SPD FAULT DIR BRAKE 0.
22 µF VBB 0.
22 µF CP1 CP2 VCP VBB G...


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