Ny driver til stepmotorer
Texas Instruments lancerer stepmotor driver, der kan reducere boardarealet og forbedre termisk ydelse, systempålidelighed og effektivitet (in english).
Texas Instruments (TI) has introduced a 2.5-A stepper motor driver that runs up to 30-percent cooler than the next closest competitor, according to the company. The highly integrated DRV8818 features low RDS(ON) to improve thermal efficiency, reducing board and ambient temperature rises.
The device improves system reliability and efficiency while maintaining high motor performance in industrial, medical and consumer applications, such as textile manufacturing, pumps, light industrial automation and printers.
Key features and benefits of the DRV8818:
• Excellent thermal performance: Typical RDS(ON) of 150 milliohms, low-side, and 220 milliohms, high-side, improves efficiency and reduces ambient and board temperatures for improved system reliability.
• Configurable motor performance: Flexible decay modes and timing parameters reduce audible noise and vibrations to improve system stability and performance.
• Built-in microstepping: Integrated indexer simplifies current regulation, enabling full, half, quarter and one-eighth microstepping, for a smoother motion profile.
• Robust, reliable and fully protected: Advanced on-chip protection, including over-current, over-temperature, shoot-through and under-voltage lock-out increases system reliability and manufacturing yields.
• Pin-to-pin compatibility: Compatible with the existing 1.9-A DRV8811 for lower-current systems, enabling current scalability with a single common design.
An DRV8818EVM evaluation module is available.
www.ti.com/drv8818-preu.
