STMicroelectronics – Low-voltage triple half-bridge motor driver for BLDC motors

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The STMicroelectronics’ STSPIN233 is a triple half-bridge motor driver intended for use in Brushless DC (BLDC) motors.

Housed in a small 3mm x 3mm x 1mm package, the driver is ideal for battery-powered and space-constrained devices. It can be forced into a zero-power state, giving a marked extension to battery run-time. The high- and low-side MOSFETs in the STSPIN233’s power stage have a low total on-resistance of 0.4Ω, further contributing to efficient operation.

The STSPIN233 supports current-sensing operation in a three-shunt topology. It also provides for direct driving of the three phases of the power stage, offering a dedicated Input and Enable pin for each half-bridge.

The device offers protection against over- currents, over-temperature and short-circuits.

FEATURES

  • Operating-voltage range: 1.8V to 10V
  • 1.3A maximum average output current
  • Junction-temperature range: -40°C to 150°C

APPLICATIONS

  • Drones and toys
  • Portable gimbals
  • Portable healthcare and medical devices
  • Low-voltage electronic valves
  • Robots

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A low-voltage three-phase BLDC motor-driver expansion board for STM32 Nucleo based on the STSPIN233. The board supports six-step and FOC algorithms with a single- or three-shunt sensing topology.

Orderable Part Number: X-NUCLEO-IHM17M1