AMT49406: Code-Free FOC Sensorless BLDC Motor Controller
The AMT49406 is a 3-phase, sensorless, brushless DC (BLDC) motor driver (gate driver) which can operate from 5.5 to 50 V—Allegro’s first QuietMotion solution. The AMT49406 is ideal for ceiling fans, pedestal fans, bathroom exhaust fans and home appliance fans and pumps.
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 AMT49406 is available in a 24-contact 4 mm × 4 mm QFN with exposed thermal pad (suffix ES) and a 24-lead TSSOP with exposed thermal pad (suffix LP). These packages are lead (Pb) free, with 100% matte-tin leadframe plating.
Astrorep Inc. (Allegro and Sanken Semiconductors,
Sanken Power Supplies)
700 Veterans Memorial Hwy
Suite 310
Hauppauge, NY 11788
Phone: (631)422-2500
Fax: (631)422-2504
Web: www.astrorepinc.com
Email: donna.tweedy@astrorepinc.com
If this is not your local representative, find your local sales rep here.
- Coding-free, sensorless field-oriented control (FOC)
- 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
| Part Number | Package Type | Temperature | RoHS Compliant |
Part Composition / RoHS Data |
Comments | Samples | Check Distributor Stock |
|---|---|---|---|---|---|---|---|
| AMT49406GESSR | 24-lead QFN | -40°C to 105°C | Yes | View Data | New | Contact your local sales rep |
Check Stock |
| AMT49406GLPTR | 24-lead TSSOP | -40°C to 105°C | Yes | View Data | New | Contact your local sales rep |
Check Stock |
Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.
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