DRV8411 datasheet(20/53 Pages) TI

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10 Application and Implementation

Note

Information in the following applications sections is not part of the TI component specification,

and TI does not warrant its accuracy or completeness. TI’s customers are responsible for

determining suitability of components for their purposes, as well as validating and testing their design

implementation to confirm system functionality.

10.1 Application Information

The DRV8411A is used in brushed-DC or stepper motor control as shown in the following applications examples.

10.1.1 Typical Application

The user can configure the DRV8411A for stepper motor, dual BDC, or single BDC motor applications as

described in this section.

10.1.1.1 Stepper Motor Application

Figure 10-1 shows the typical application of the DRV8411A device to drive a stepper motor.

AIN1

AIN2

BIN1

BIN2

nSLEEP

AOUT1

AOUT2

BOUT1

BOUT2

nFAULT

AIPROPI

BIPROPI

100 nF

VREF

VMCU

CBULK

10 µF

Stepper

DRV8411A

VMCU

Microcontroller

(MCU)

PWM

PGNDA

PGNDB

Figure 10-1. Typical Application Schematic of DRV8411A Driving Stepper Motor

10.1.1.1.1 Design Requirements

Table 10-1 lists design input parameters for system design.

Table 10-1. Design Parameters

DESIGN PARAMETER

REFERENCE

EXAMPLE VALUE

Motor supply voltage

11 V

Motor winding resistance

34 Ω/phase

Motor winding inductance

33 mH/phase

Target trip current

ITRIP

500 mA

10.1.1.1.2 Detailed Design Procedure

10.1.1.1.2.1 Stepper Motor Speed

The first step in configuring the DRV8411A requires the desired motor speed and stepping level. The device can

support full- and half-stepping modes using the PWM interface.

DRV8411A

SLVSGI9A – OCTOBER 2022 – REVISED JULY 2023

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