STMicroelectronics releases STSPIN9 series of high-current motor driver chips, launching two highly scalable products in advance

【Lansheng Technology News】On November 8, 2023,STMicroelectronicsreleased the STSPIN9 series of high-current motor driver chips, launching two products in advance, targeting high-end industrial equipment, home appliances and professional equipment.

4.5A STSPIN948 and 5.0A STSPIN958 integrate PWM control logic circuit and 58V power stage, as well as system protection function and two current detection op amps, suitable for driving DC brush motors and bipolar stepper motors. Both chips provide developers with the flexibility to configure and scale power levels while streamlining bill-of-materials costs.

STMicroelectronics'STSPIN948chip has two full-bridge topologies that can be configured into different drive modes, allowing developers to choose different configurations and flexibly drive multiple motors with different power ratings. STSPIN948 has multiple PWM current control modes to choose from, including fixed off-time or settable current threshold, and supports five operating modes. This 4.5A IC comes in a 7mm x 7mm VQFPN48 package.

STSPIN958has only a full-bridge topology, which can be configured to drive two unidirectional motors, a bidirectional DC brush motor, and a higher current unidirectional motor if the power output pins are connected in parallel. This chip also provides fixed off-time and settable current control mode selection, and can also choose dual half-bridge, single full-bridge and half-bridge parallel configurations, supporting seven motor drive modes. The 5.0A STSPIN958 is available in a 5mm x 5mm VFQFPN32 package.

The wide operating voltage range and flexible configurations make the STSPIN948 and STSPIN958 motor drivers suitable for a variety of industrial applications, including factory automation systems, textile machines, industrial robots, household robots, stage lighting systems, ATMs and money counting machines, and antenna control machines, vending machines, and most commonly used household appliances and industrial equipment.

Both driver chips allow designers to set the slew rate of the output transistor to 0.3V/ns, 0.6V/ns, 1.2V/ns or 2V/ns using an external resistor to find the balance between power consumption and electromagnetic compatibility. an ideal equilibrium point. The built-in dead-time mechanism can effectively prevent breakdown, and the on-resistance of each MOSFET is only 200mΩ, which can maximize energy efficiency. The propagation delay of 280ns ensures that the driver responds quickly to system commands.

Each chip has a comprehensive set of protection features, including overcurrent, overtemperature and short-circuit protection, as well as bus undervoltage detection and undervoltage lockout (UVLO).

To help users develop applications using these two chips and shorten the project development cycle,STMicroelectronicsalso provides simple and easy-to-use evaluation boards at an affordable price. EVSPIN948 is equipped with STSPIN948 chip and can drive up to two motors. EVSPIN958 is equipped with STSPIN958 chip and can only drive one motor. Each evaluation board is designed as a mainboard expansion card and supports most STM32 Nucl development boards and the Arduino® UNO R3 interface.