24-V, sinusoidal, sensorless, brushless quiet DC motor driver

October 15, 2014 // By Graham Prophet
Noise is reduced in fan and small pump applications: TI's single-IC solution minimises board space, accelerates design cycles and cuts audible noise by up to 75%.

Claimed as the first 24-V, sinusoidal, sensorless, brushless DC (BLDC) motor driver, the DRV10983 gives the ability to quickly tune motors for reliable start-up and optimal performance using a configurable, 3-A driver with integrated control logic. Using 180-degree, sinusoidal, sensorless technology, the DRV10983 is up to 75% quieter than competing solutions for applications such as cooling fans, ceiling fans, blowers and small appliances.

Ultra-quiet operation: 180-degree pure sinusoidal, sensorless operation, coupled with advanced start-up algorithms, enables up to 75% quieter operation than the competition, with no annoying clicks or pops at start-up. Pure tone harmonics, a significant noise source in fan applications, are reduced by as much as 25 dBA.

Code-free configurability: Tune a wide range of motors for optimal performance and reliable start-up through simple register settings without the need for complex microcontroller coding or motor knowledge.

Full suite of protection: Advanced on-chip protection, including anti-voltage surge (AVS) over-voltage, over-current, over-temperature, shoot-through, under-voltage lock-out and advanced five-stage rotor lock protection, reduces design complexity and increases system reliability.

Fully integrated solution: A single-chip solution with integrated power FETs, sensorless control logic and optional 100-mA, 3.3- or 5-V step-down converter reduce board space, system cost and development time.

The DRV10983EVM evaluation module (EVM) is a sensorless solution for running three-phase BLDC motors. The EVM includes a BLDC motor and comes complete with a graphical user interface (GUI), schematics and Gerber files for $99.

The DRV10983, in a 24-pin, 8 x 6-mm HTSSOP package is $1.19 (1000).

Texas Instruments; www.ti.com/drv10983-pr

More on designing sinusoidal, sensorless control for 3- phase BLDC motors ; Videos are here and here.