Single-chip motor controllers

23 January 2013 Power Electronics / Power Management

Precision movement and positioning systems used in industries such as automated manufacturing and pharmaceutical production can be quieter, smaller, lighter, simpler and more efficient using new single-chip digital motion controllers from STMicroelectronics. The cSPIN micro-stepping controllers for 2-phase stepper motors provide communication with the main system using high-level commands via a standard Serial Peripheral Interface (SPI). The on-chip gate-driver circuitry, for the motor’s power stage, can operate from 8 V to 85 V, which allows applications to scale smoothly over a wide power range up to 300 W. ST’s digital motion engine is optimised to overcome challenges such as avoiding resonance to ensure exceptionally smooth and quiet motor operation.

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