L6480H

Overview

The L6480H is a high-power bipolar stepper motor driver and controller from STMicroelectronics, designed for demanding industrial applications. It operates within a supply voltage range of 7.5 V to 85 V and supports output currents up to 25 A. The device integrates a dual full-bridge gate driver for N-channel MOSFETs with embedded non-dissipative overcurrent protection. Key electrical parameters include a maximum operating temperature of 150°C and a minimum of -40°C. It features an SPI interface for digital control and supports microstepping resolutions up to 1/128.

Feature Summary

• Integrates a motion engine capable of generating programmable acceleration, deceleration, speed, and target position profiles via SPI commands.
• Provides sensorless stall detection and integrated voltage regulators for robust operation in complex environments.
• Features a unique voltage mode driving mechanism that compensates for BEMF, bus voltage, and motor winding variations to ensure precise microstepping.

Applications

• Industrial automation systems requiring high-torque stepper motor control
• CNC machinery and precision positioning equipment
• Robotics joints and actuator drives

Procurement Notes

Verify the specific package variant (HTSSOP) and ordering suffix against the official datasheet to ensure compatibility with your PCB footprint and thermal requirements. Confirm that the selected component meets the required voltage and current specifications for your application before finalizing procurement.

Selection Notes

Select the L6480H when high power delivery and integrated motion control are required in a single component. Ensure the host system can support the necessary SPI communication speeds and that the thermal management solution accommodates the device's power dissipation characteristics under load.

Part Context

The L6480H belongs to the STSPIN L64 series of advanced motor controllers. It is part of a family that includes evaluation tools like the EVAL6480H-DISC and firmware libraries such as STSW-SPIN005, which facilitate development and integration into custom firmware solutions for stepper motor applications.

Replacement Considerations

Check for direct substitutes within the L6480 series or compatible STSPIN devices. Verify pinout compatibility and electrical parameter alignment if considering alternative manufacturers' components.