DRV8434PWPR

Overview

The DRV8434PWPR is a bipolar stepper motor driver from Texas Instruments, packaged in an HTSSOP-28 surface-mount device. It supports a supply voltage range of 4.5 V to 48 V and delivers a full-scale output current of 2.5 A. The device integrates two N-channel power MOSFET half-bridge drivers, a microstepping sequencer, and internal current sensing, eliminating the need for external sense resistors. It features a 1/256 microstepping capability and includes protection mechanisms such as overcurrent, short-circuit, and thermal shutdown.

Feature Summary

• Integrates dual H-bridge drivers with internal current sensing architecture
• Supports high-resolution 1/256 microstepping for smooth motion control
• Features smart tune technology for automatic decay mode selection
• Includes comprehensive fault protection and low-power sleep modes

Applications

• Industrial automation and robotics systems
• Office equipment including printers and scanners
• Medical devices requiring precise motion control
• Textile machinery and stage lighting equipment

Procurement Notes

Verify the specific suffix PWPR against official datasheets to confirm package type and tape-and-reel specifications. Ensure compatibility with system voltage requirements and thermal management needs. Cross-reference ordering information with manufacturer documentation to avoid discrepancies in packaging or variant definitions.

Selection Notes

Select this component for applications requiring integrated current sensing without external resistors. Consider the HTSSOP-28 package for space-constrained designs. Evaluate the 2.5 A current capacity against load requirements. Verify SPI interface compatibility if digital configuration is required for the specific system architecture.

Part Context

This part belongs to the DRV8434E series of stepper motor controllers. It is designed for high-performance motion control applications. The series emphasizes integration by combining driver and controller functions on a single chip. This reduces component count and simplifies PCB layout compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.