Allegro MicroSystems Europe has announced the launch of the company’s QuietMotion family, consisting of field-oriented control (FOC) brushless DC (BLDC) electric motor controllers that are customer code-free. The devices are designed to provide reliable and efficient, low audible noise performance while reducing design cycle time.
Whereas most FOC BLDC drivers require software developers to code the algorithm in a microprocessor, QuietMotion devices integrate Allegro’s own FOC algorithms. These algorithms allow for smooth, quiet motion while eliminating the need to write software. With only five external components, these devices also minimise bill of materials (BOM) cost, improve reliability and reduce design complexity.
The first member of the QuietMotion family is the AMT49406, for applications that demand high efficiency and low acoustic noise – such as pole and ceiling fans, humidifiers, dehumidifiers, air purifiers and exhaust fans. With its embedded proprietary windowless sinusoidal algorithm and soft-on-soft-start algorithms, it provides reliable, effective audible noise performance.
The A89301 is also part of the QuietMotion family. This device offers ultra-quiet operation, as well as additional flexibility and programmable features for premium appliances, such as high-end appliance fans, high-end ceiling fans and air purifiers. The A89301 is specifically targeted at systems with low speed requirements.
The AMT49406 and the A89301 have a 5,5 V to 50 V input voltage rating with an operating range of -40° to 105°C. They are available in a 24-contact, 4 x 4 mm QFN with exposed thermal pad, or a 24-lead TSSOP with exposed thermal pad.
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