industry news
Subscribe Now

STMicroelectronics’ New Motor Driver with Embedded 32-Bit MCU Simplifies Motion Control for Battery-Operated Robots and Appliances

Geneva, October 17, 2017 — STMicroelectronics’ STSPIN32F0A programmable motor controller contains fully integrated gate drivers for three external MOSFET half-bridges, an STM32F0 microcontroller (MCU), as well as a 3.3V DC/DC switching converter plus a 12V LDO, giving designers flexible motor-control options in a lightweight and compact 7mm x 7mm outline. The 48MHz microcontroller, with 32Kbyte on-chip Flash, can run motor control algorithms such as 6-step sensorless, field-oriented control or position-sensed control, as well as the user application.

The STSPIN32F0A has an extended operating-voltage range from 6.7V to 45V and can run from batteries as small as a pair of LiPo cells in mobile robots, gimbals, or drones. It is also ideal for power tools, portable appliances like air purifiers and small refrigerators, as well as server cooling fans and 3D printers.

Developers can take advantage of 16 programmable I/O pins and microcontroller peripherals that save CPU involvement to handle motor back-EMF Back electromotive force or position/Hall-sensor feedback and allow precise control down to near-zero rotor speed. These include a 12-bit 9-channel ADC, and three operational amplifiers that can also be used for tasks such as current sensing through a shunt resistor.

Further MCU resources include five general-purpose timers and I2C, UART, and SPI interfaces. Users can also access the boot loader, gaining flexibility to upgrade or update firmware over the air.

The gate-driver IC can deliver up to 600mA per channel, enabling designers to choose from a wide variety of MOSFETs to control motors of various power ratings. Integrated bootstrap diodes ensure reliable startup, and built-in protection includes real-time programmable over-current protection, cross-conduction/shoot-through prevention, under-voltage lockout (UVLO), and over-temperature protection.

The STSPIN32F0A also integrates a 3.3V DC/DC converter to supply the microcontroller and a 12V LDO for the gate-driving circuitry, which further simplify system design and streamline the bill of materials.

The MCU-powered motor driver connects with ST’s extensive STM32 development ecosystem that includes STM32Cube software packages, STM32 Nucleo hardware, and approved third-party resources in the STM32 Partner Program.

The STSPIN32F0A is available immediately, in 7mm x 7mm QFN, priced from $1.605 for orders of 1000 pieces.

For further information please visit www.st.com/stspin

Leave a Reply

featured blogs
Dec 18, 2018
Cadence was recently named number 15 on the 2018 list of the World'€™s Best Multinational Workplaces, according to global research and consulting firm Great Place to Work® and Fortune Magazine.... [[ Click on the title to access the full blog on the Cadence Community ...
Dec 18, 2018
Building on their existing partnership, Avnet, a leading global technology solutions provider, and Samtec, today announced an extension of their distribution agreement. Avnet customers in Asia Pacific and Japan now have access to Samtec'€™s full product portfolio....
Dec 12, 2018
Solder on a PCB can be thought of as connective tissue. It serves as the conductive glue that sticks components to substrate and brings continuity to the circuit board....
Nov 14, 2018
  People of a certain age, who mindfully lived through the early microcomputer revolution during the first half of the 1970s, know about Bill Godbout. He was that guy who sent out crudely photocopied parts catalogs for all kinds of electronic components, sold from a Quon...