DRV8881EPWP

Overview

The DRV8881EPWP is a bipolar stepper or dual H-bridge brushed DC motor driver from Texas Instruments, housed in a 28-pin HTSSOP package. It operates on a supply voltage range of 6.5 V to 45 V with an output current capability of 2.5 A peak and 1.4 A RMS. The device features an integrated 3.3 V LDO regulator drawing 8 mA quiescent current. It supports multiple decay modes including slow, fast, and mixed decay, alongside AutoTune functionality for optimal current regulation. Operating temperatures span from -40°C to +125°C, with a maximum junction temperature of 150°C.

Feature Summary

• Integrates two N-channel power MOSFET H-bridge drivers for robust motor control
• Features AutoTune technology for automatic current regulation optimization and compensation
• Supports configurable PWM chopper with selectable off-times of 10 μs, 20 μs, or 30 μs
• Includes comprehensive protection mechanisms such as UVLO, OCP, and thermal shutdown

Applications

• Industrial bipolar stepper motor control systems
• Dual H-bridge brushed DC motor drives
• Automotive motion control applications
• General industrial automation equipment

Procurement Notes

Verify the specific suffix EPWP corresponds to the HTSSOP-28 package variant when sourcing. Confirm RoHS compliance status and moisture sensitivity level requirements prior to assembly. Check for end-of-life notices or obsolescence warnings directly from Texas Instruments documentation before finalizing procurement plans.

Selection Notes

Select this model for designs requiring integrated AutoTune current regulation and mixed decay mode support. Ensure PCB layout accommodates the PowerPAD thermal dissipation requirements for sustained 1.4 A RMS operation. Verify that the control interface matches the PH/ENABLE pin configuration specific to the E variant rather than the PWM interface found in P variants.

Part Context

This component belongs to the DRV8881 family of 2.5 A motor drivers designed for industrial applications. It shares core architectural similarities with other variants like the DRV8881PPWPR but differs in package type and control interface options. The EPWP designation specifically identifies the HTSSOP package version equipped with the AutoTune feature set.

Replacement Considerations

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