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TI's stepper motor driver boosts thermal efficiency

Posted: 02 May 2012     Print Version  Bookmark and Share

Keywords:Stepper  motor driver  RDS 

Texas Instruments Inc. introduces the DRV8818, a 2.5A stepper motor driver that claims to run up to 30 per cent cooler than its closest competitor offering a low RDS(ON) that boosts thermal efficiency.

 DRV8818

The DRV8818 features typical RDS(ON) of 150mΩ, low-side, and 220MΩ, high-side, improves efficiency and reduces ambient and board temperatures for improved system reliability.

According to TI, 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.

The DRV8818 features typical RDS(ON) of 150mΩ, low-side, and 220MΩ, high-side, improves efficiency and reduces ambient and board temperatures for improved system reliability.

The device's configurable motor uses flexible decay modes and timing parameters to reduce audible noise and vibrations to improve system stability and performance. The DRV8818's integrated indexer simplifies current regulation, enabling full, half, quarter and one-eighth microstepping, for a smoother motion profile, according to TI.

The device offers advanced on-chip protection, including over-current, over-temperature, shoot-through and under-voltage lock-out increases system reliability and manufacturing yields. The device is compatible with the existing 1.9A DRV8811 for lower-current systems, enabling current scalability with a single common design.

The DRV8818 motor driver is available today in a 10mm x 6mm HTSSOP package for a suggested retail price of Rs.114.80 ($2.25) in 1,000-unit quantities.





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