Single chip three-phase BLDC driver boosts battery life

Single chip three-phase BLDC driver boosts battery life

New Products |
By Nick Flaherty

The STSPIN233 is the first to integrate a 200mΩ 1.3Arms power stage in a 3mm x 3mm QFN package and also has the industry’s lowest standby current at under 80nA. It can be put into standby mode under logic control, making it suitable for extending operation from batteries in equipment such as drone-camera gimbals, educational robots, toothbrushes, shavers, medical syringe pumps, or small drives in Internet-of-Things (IoT) devices.

The input-voltage range of 1.8V-10V allows use with a power source as basic as a single Li-ion cell and built-in safety features further simplify system design, including over-current, short-circuit, and over-temperature protection, UVLO, and interlocking.

A development ecosystem comprising a Nucleo expansion board (X-NUCLEO-IHM17M1) and related software tools (X-CUBE-SPN17 for STM32Cube) is available to jump-start evaluation and prototyping using the STM32Cube software environment that includes tools, middleware, and application-code examples.

The STSPIN233 completes ST’s range of monolithic low-voltage drivers for stepping, brush, or brushless motors in small battery-powered devices. The complete family, comprising STSPIN220, STSPIN230, STSPIN233, STSPIN240, and STSPIN250, each with a dedicated Nucleo evaluation board and X-CUBE software package, offers flexible choices including single, dual, or high-current (2.6Arms) brush motor control, and sensed or sensorless BLDC control.

The STSPIN233 is available now from $0.95 for orders of 1000 pieces.


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