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Texas Instruments DRV8873/DRV8873-Q1 H-Bridge Motor Drivers

Texas Instruments DRV8873/DRV8873-Q1 H-Bridge Motor Driver is an integrated driver IC for driving a brushed DC motor in industrial and automotive applications. Two logic inputs control the H-bridge driver, which consists of four N-channel MOSFETs that drive motors bi-directionally with up to 10A peak current. The device operates from a single power supply and supports a wide input supply range from 4.5V to 38V. A PH/EN or PWM interface allows simple interfacing to controller circuits. Alternatively, independent half-bridge control is available to drive two solenoid loads. A current mirror allows the controller to monitor the load current. This mirror approximates the current through the high-side FETs and does not require a high-power resistor for sensing the current.

A low-power sleep mode is provided to achieve very-low quiescent current draw by shutting down much of the internal circuitry. Internal protection functions are provided for under voltage lockout, charge pump faults, overcurrent protection, short-circuit protection, open-load detection, and overtemperature. Fault conditions are indicated on a nFAULT pin and through the SPI registers. The DRV8873-Q1 devices are AEC-Q100 qualified for automotive applications.

Features

  • AEC-Q100 Qualified for automotive applications
    • Device temperature grade 1: –40°C to +125°C, TA
  • H-Bridge motor driver
    • Drives one DC motor, one winding of a stepper motor, or solenoid loads
  • 4.5V to 38V Operating voltage range
  • 10A Peak current drive
  • Low HS + LS RDS(ON)
    • 150mΩ at TJ = 25°C, 13.5V
    • 250mΩ at TJ = 150°C, 13.5V
  • Current mirror for output current sensing
  • Configurable Control Interface
    • PH/EN
    • PWM (IN1/IN2)
    • Independent half-bridge control
  • Supports 1.8V, 3.3V, 5V logic inputs
  • SPI or Hardware interface options
  • Low-power sleep mode (10µA)
  • Small package and footprint
    • 24 HTSSOP PowerPAD™ IC package
  • Protection Features
    • VM Undervoltage Lockout (UVLO)
    • Charge Pump Undervoltage (CPUV)
    • Overcurrent Protection (OCP)
    • Output short to battery and short to ground protection
    • Open Load Detection
    • Thermal Shutdown (TSD)
    • Fault Condition Output (nFAULT / SPI)

Applications

  • Electronic throttle control
  • Exhaust gas recirculation
  • Side-view mirror tilt
  • e-Shifter
  • Air-flow diverter valve control

Datasheets

Associated Development Tool

Texas Instruments DRV8873xEVM/DRV8873x-Q1EVM Evaluation Modules

Facilitates control of the DRV8873, a brushed DC motor and manipulation of various settings.

Learn Moreabout Texas Instruments DRV8873xEVM/DRV8873x-Q1EVM Evaluation Modules View Productsrelated to Texas Instruments DRV8873xEVM/DRV8873x-Q1EVM Evaluation Modules

Functional Block Diagram

Block Diagram - Texas Instruments DRV8873/DRV8873-Q1 H-Bridge Motor Drivers
Published: 2018-09-10 | Updated: 2025-06-12