A89301
A89301 is 50V Ultra Low Noise FOC Motor Controller manufactured by Allegro MicroSystems.
A89301 50 V Ultra Low Noise FOC Motor Controller
Features
AND BENEFITS
- Code-free sensorless field-oriented control (FOC)
- I2C interface for speed control and status readback
- 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
APPLICATIONS
- Ceiling fans
- Pedestal fans
- Bathroom exhaust fans
- Home appliance fans and pumps
DESCRIPTION
The A89301 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. The device 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 A89301 is available in a 24-contact 4 mm × 4 mm QFN with exposed thermal pad (suffix ES). The package is lead (Pb) free, with 100% matte-tin leadframe plating.
PACKAGE
Not to scale
24-contact QFN with exposed thermal pad 4 mm × 4 mm × 0.75...
