STSPIN948

Overview

The STSPIN948 is a scalable dual full-bridge driver designed for brushed DC motors and bipolar stepper motors. It delivers a maximum output current of 4.5 A RMS with an operating voltage range up to 58 V. The device features a typical RDS(ON) of 0.36 Ω and supports switching frequencies up to 500 kHz. Control logic operates between 2.8 V and 3.6 V, while the power stage accepts 5.2 V to 58 V. It utilizes a VFQFPN-48 package and functions within an ambient temperature range of -40°C to +85°C.

Feature Summary

• Independent full-bridges with adjustable current limiter thresholds and OFF-time selection for slow or mixed decay modes
• Integrated amplifiers providing two distinct embedded current control techniques using external shunt resistors
• Adjustable power MOSFET slew rate to optimize the balance between performance and electromagnetic interference
• Comprehensive protection suite including under-voltage lockout, overcurrent detection, thermal shutdown, and low bus voltage monitoring

Applications

• Factory automation systems
• Textile machinery
• Home appliances
• Robotics actuators
• Automated vending machines

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm RoHS compliance status via official documentation. Ensure storage conditions respect humidity sensitivity levels. Validate package integrity upon receipt. Cross-reference ordering suffixes against manufacturer specifications to ensure correct variant acquisition.

Selection Notes

Select this driver for applications requiring high-frequency PWM control with precise duty-cycle management. Consider its scalability for designs needing independent bridge operation or parallel half-bridge configurations. Evaluate the integrated current sensing capabilities if external shunt resistors are preferred. Assess thermal requirements based on the 4.5 A RMS capability and available cooling solutions.

Part Context

This component belongs to the STSPIN9 series, which targets industrial, home, and professional appliance markets. The series provides a scalable platform for high-current motor driving from 5V to 58V. It complements other STSPIN devices by offering flexible driving methods and robust protection features for compact motor control designs.

Replacement Considerations

STSPIN958 serves as a related alternative within the same family, offering a single full-bridge configuration with 5 A capacity. Designers should verify pin compatibility and electrical parameter differences when substituting components.

FAQ

What decay modes are supported by the STSPIN948?

The device supports both slow decay and mixed decay modes, which can be selected via the adjustable OFF-time settings.

How is current sensing implemented in this driver?

Current sensing is achieved using two integrated amplifiers with fixed gain factors that utilize external shunt resistors for measurement.