Introduction; Overview; Purpose And Scope - Texas Instruments DRV84 2-EVM Series User Manual

Introduction

1 Introduction

1.1 Overview

The DRV84x2, DRV89x2, and DRV82x2 family of devices are a wide voltage, high power drivers ideal for a large
range of industrial applications.
DRV84x2: DRV8452 and DRV8462, Stepper Motor Driver with Autotorque, Silent Step Decay Mode, and
Automatic Microstepping
The auto-torque feature boosts system efficiency by adjusting the coil current according to the load torque. The
standstill power saving mode automatically reduces power loss during motor hold condition. The silent step
decay mode enables noiseless operation.
The internal current sense architecture eliminates the need for external sense resistors, therefore saving PCB
area and system cost. The built-in indexer of the DRV8462 supports up to 1/256 microstepping, and the
automatic microstepping mode interpolates the input STEP signal to reduce overhead on the controller MCU.
Sensor-less stall detection eliminates end stops from the system. The device supports protection and diagnostic
features for robust and reliable operation.
DRV89x2: DRV8952 and DRV8962, Four-channel Half-Bridge Driver with Current Sense Outputs
The output stage of the device consists of N-channel power MOSFETs configured as four independent
half-bridges, charge pump regulator, current sensing and regulation circuits, current proportional outputs and
protection circuitry.
Integrated current sensing across the high-side MOSFETs allows the device to regulate the load current when
the load is connected from output to ground. A regulation current limit can be set with an adjustable external
voltage reference (VREF). Additionally, the device provides four proportional current output pins, one for each
half-bridge high-side FET.
A low-power sleep mode is provided to achieve ultralow quiescent current. Internal protection features are
provided for supply under-voltage lockout (UVLO), charge pump under-voltage (CPUV), output over current
(OCP), and device over-temperature (OTSD).
DRV82x2: DRV8252 and DRV8262, Single or Dual H-Bridge Motor Drivers with Current Sense Output
The device integrates two H-bridges. The two H-bridges can be paralleled together. Reference the data sheet for
more information.
Similar to the DRV 89x2, integrated current sensing across the high-side MOSFETs allows the driver to regulate
the motor current during start-up and high load events. A current limit can be set with an adjustable external
voltage reference. Additionally, the device provides output current proportional to the motor current for each
H-bridge. The integrated sensing uses a current mirror architecture, removing the need for large shunt resistors,
saving board area and reducing system cost.
A low-power sleep mode is provided to achieve ultra-low quiescent current. Internal protection features are
provided for supply under-voltage lockout (UVLO), charge pump under-voltage (CPUV), output over current
(OCP), and device over-temperature (OTSD).

1.2 Purpose and Scope

This document is designed to be used as a start-up guide and to supplement the
DRV84x2_DRV82x2_DRV89x2-EVM. The scope of this document is to provide the user with a guide to
evaluate the DRV84x2_DRV89x2_DRV82x2 family of devices using a Graphical User Interface (GUI). The GUI
application is required to control the EVM. This document covers the required EVM connections, configuration,
and steps to use the GUI application for evaluation.
2 DRV84x2_DRV82x2_DRV89x2-EVM User's Guide
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SLOU558 – AUGUST 2022
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