Motor control kit includes 32-bit microcontroller, driver
Texas Instruments Incorporated (NYSE: TXN) announced a motor control kit for spinning three-phase brushless motors with a Stellaris Cortex-M3 microcontroller (MCU). The DK-LM3S-DRV8312 motor control kit features a 32-bit Stellaris LM3S818 microcontroller and DRV8312 motor driver to spin sub-50 V, 6.5 A three-phase brushless dc (BLDC) motors in minutes. This solution is for high-volume motor control applications, including low-voltage fans, blowers, pumps, tools and compressors.
The Stellaris LM3S818 controlCard module included in the kit has the required firmware pre-programmed in flash memory to run TI’s InstaSPIN-BLDC solution out-of-the-box, along with other customer-developed applications, when plugged into the DRV8312 motor driver base board. The InstaSPIN-BLDC solution is an innovative and free back-electromagnetic field (EMF) technique that spins any motor in seconds without knowledge of any motor parameters. Unlike traditional back-EMF zero crossing techniques, InstaSPIN-BLDC extends sensorless operation down to lower speeds and exhibits high immunity to miscommutation caused by rapid speed changes. Reliable motor start-up has been demonstrated over a wide range of conditions, including full torque.
Features and benefits of the Stellaris motor control kit include:
- The controlCard module with Stellaris LM3S818 MCU features 50 MHz performance, 64 KB flash, 8 KB SRAM and 6 PWM generators, allowing developers to create complex motion control designs with a tiny footprint.
- DRV8312 motor driver provides output up to 6.5 A, without the need for a costly external heat sink. It is a fully protected motor driver with cycle-by-cycle over-current, over-temperature, cross-conduction and under-voltage protection, reducing design complexity and board space.
- Kit includes a 24 V three-phase BLDC motor operating at up to 3.5 A continuously.
- Supporting software includes StellarisWare software with TI’s IQmath Library for easy fixed to floating point conversion and InstaSpin-BLDC software for quick and reliable motor start-up on any motor.
- Accelerated system design with intuitive graphical user interface (GUI).
Texas Instruments Incorporated
– Edited by Chris Vavra, Control Engineering, www.controleng.com
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