3-phase brushless motor driver with sine wave drive

March 10, 2016 // By Graham Prophet
High efficiency at a wide range of rotational speeds with minimal noise and vibration is promised with the TC78B016FTG, which is optimised for use in the small fan motors in home appliances and industrial equipment: it outputs a peak of 3A at an output voltage of up to 40V

For home appliances and industrial equipment demanding energy efficiency with minimal noise generation, the use of inverters for fan motor control is more widespread than ever. Conventionally, improving the high efficiency of existing products requires phase adjustment of the motor voltage and the motor current to each fan motor. Maintaining high efficiency over a wide rotational speed range (from almost zero rotations per minute (rpm) at start-up to high speeds of several 1000rpm) takes time and requires many parts for phase adjustment.

 

The control technology in this IC automatically adjusts the phase of the motor voltage and the motor current. It achieves a drive equal in efficiency to an MCU control system across a wide range of rotational speeds. Since automatic phase adjustment is secured with a simple configuration, development times are shortened by removing the need to create software and adjust the characteristics of the MCU.

 

The TC78B016FTG is housed in a WQFN36 package, measuring 5 x 5 x 0.8 mm. An application note is here.

 

Toshiba Electronics Europe; www.toshiba.semicon-storage.com