DRV8873SPWPR

Overview

The DRV8873SPWPR is a half-bridge motor driver from Texas Instruments designed for brushed DC motors. It features an integrated H-bridge with four N-channel MOSFETs, supporting peak currents up to 10 A. The device operates on a single supply voltage ranging from 4.5 V to 38 V. It utilizes an SPI interface for control and includes current monitoring capabilities via a current mirror. The component is housed in a 24-pin HTSSOP package and functions within a temperature range of -40°C to +125°C.

Feature Summary

• Integrates an H-bridge structure composed of four N-channel MOSFETs for bidirectional motor drive.
• Provides current monitoring through a high-side FET current mirror without requiring external power resistors.
• Supports flexible control interfaces including PH/EN or PWM modes alongside the primary SPI communication protocol.

Applications

• Industrial brushed DC motor control systems
• Automotive motion applications
• Ignition controller circuits

Procurement Notes

Verify the specific suffix against official datasheets to confirm interface configuration, as variations exist within the family. Confirm RoHS compliance status and moisture sensitivity level requirements for your assembly process. Ensure the selected variant matches the required control logic before finalizing procurement orders.

Selection Notes

Select this component when an SPI-controlled half-bridge driver is required for brushed DC motors. It is suitable for applications needing integrated current sensing and operation across wide voltage ranges. Consider thermal management solutions due to the power dissipation characteristics of the NMOS technology in the specified package.

Part Context

This part belongs to the DRV8873 series of motor drivers manufactured by Texas Instruments. The series includes variants with different interfaces, such as hardware inputs or automotive-grade versions. The SPWPR designation specifically indicates the commercial grade with SPI interface in a 24-HTSSOP package.

Replacement Considerations

DRV8873HPWPR serves as a parameter-equivalent alternative within the same product family.

FAQ

How does the DRV8873SPWPR monitor load current?

It uses a current mirror connected to the high-side FET to allow the controller to monitor load current without needing high-power sense resistors.

What type of MOSFETs are used in the H-bridge?

The device integrates four N-channel MOSFETs to form the H-bridge structure.