STSPIN948TR

Overview

The STSPIN948TR is a scalable dual full-bridge driver for brushed DC motors or bipolar stepper motors, manufactured by STMicroelectronics. It delivers a maximum output current of 4.5 A RMS with an operating voltage up to 58 V. The device features a typical RDS(ON) of 0.36 Ω and supports switching frequencies up to 500 kHz. It operates within an ambient temperature range of -40 °C to +85 °C and is housed in a VFQFPN-48 surface-mount package.

Feature Summary

• Dual independent full-bridges with adjustable current limiter threshold and OFF-time selection for slow or mixed decay
• Integrated amplifiers with fixed gain for external shunt resistor current sensing
• Adjustable power MOS slew rate to optimize the trade-off between performance and electromagnetic interference
• Comprehensive protection suite including overcurrent detection, thermal shutdown, and under-voltage lockout

Applications

• Stage lighting systems
• Factory automation equipment
• ATM and cash handling machines
• Textile machinery
• Robotic actuators

Procurement Notes

Verify the specific ordering suffix to confirm the tape and reel packaging configuration required for automated assembly processes. Ensure that the procurement channel provides valid traceability documentation consistent with manufacturer standards. Confirm that the component lot date aligns with project timelines to avoid obsolescence risks associated with long lead times. Validate that the received units match the exact part number designation without unauthorized substitutions.

Selection Notes

Select this component when designing high-current motor control applications requiring precise duty-cycle PWM control. The integrated current sensing amplifiers simplify external circuitry compared to discrete solutions. Consider the adjustable slew rate feature if electromagnetic compatibility is a critical design constraint. Evaluate the thermal performance requirements against the specified junction temperature limits for the intended enclosure environment.

Part Context

This part belongs to the STSPIN9 series of scalable high-current drivers targeting industrial and professional appliances. It complements other variants like the STSPIN958, which offers higher current capacity. The series shares common architectural features such as flexible driving methods and robust protection mechanisms, providing designers with a modular platform for various motor drive power levels.

Replacement Considerations

The STSPIN958 serves as a direct functional substitute within the same product family, offering increased current capability. Designers must verify that the system's thermal management and power supply can accommodate the differences in on-resistance and current ratings between these two devices.