STMicroelectronics STSPIN820 motion-control chip

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STMicroelectronics’ STSPIN820 is a dedicated stepper-motor driver with 256-microstep resolution. The IC enables stepper-motor-based robots to achieve smoothness and silence, with small size, precision and low power consumption.

With its high-speed inputs and precise micro-stepping algorithm, the product can turn a motor by a fraction of a degree to move a 3D printer’s head at a speed of more than 500 mm/s, with submicron precision to create parts quickly, or to control precise movements like sample loading, capping/decapping and storage/retrieval in clinical automation systems.

Measuring just 4 x 4 mm, and containing both control intelligence and fully protected power components (rated 45 V and 500 mΩ R_DS(ON)) for driving the motor, the chip is a tiny all-in-one high-precision controller. Manufacturers of automation equipment can simply place the device on the controller circuit board, with minimal extra parts needed to complete the system. Overcurrent, overtemperature and short-circuit protection are also built in, allowing the device to withstand harsh industrial environments.

Motor-driven medical equipment such as plate handlers, fluid pumps, blood analysers and respirators becomes quieter and more compact, according to the company. It helps simplify motion control for many other types of equipment, including textile and sewing machines, surveillance equipment, cash-handling machines, office and home automation, and point-of-sale (POS) terminals.

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