Introduction
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SLVUB68 – October 2017
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Copyright © 2017, Texas Instruments Incorporated
DRV8873x-Q1EVM User’s Guide
1
Introduction
1.1
Overview
The DRV8873-Q1 device is an integrated driver IC for driving a brushed DC motor in 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 10-A peak current. The DRV8873-Q1 operates from a single power
supply and supports a wide input supply range from 4.5 V to 38 V.
Figure 1. DRV8873x-Q1EVM (Actual Board May differ)
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 undervoltage lockout, charge pump
faults, overcurrent protection, short-circuit protection, open-load detection, and overtemperature. Fault
conditions are indicated on an nFAULT pin and through the SPI registers.
1.2
Purpose and Scope
This document is designed to be used as a startup guide and to supplement the DRV8873x-Q1EVM. This
document is intended for the engineers involved in the design, implementation, and validation of
DRV8873-Q1 device. The scope of this document is to provide the user with a guide to evaluate the
DRV8873-Q1 device using GUI control. This document covers the hardware (HW) connections required
between the DRV8873x-Q1EVM and the GUI. When the HW connections are complete, the user is
required to download and open the GUI to control the DRV8873-Q1 device.