Texas Instruments DRV8311HEVM Manuel utilisateur

User’s Guide

DRV8311HEVM User's Guide

ABSTRACT

This document is provided with the DRV8311HEVM customer evaluation module (EVM)to evaluate the DRV8311

3-V to 20-V Three-Phase Smart Gate Driver. This User's Guide details the implementation of the EVM and

shows how to set up and power the board with the LAUNCHXL-F280049C (C2000 Piccolo MCU F280049C

LaunchPad™ development kit).

Note

The DRV8311HEVM comes automatically populated with and configured for the DRV8311H hardware

device. It is also compatible for the DRV8311S and DRV8311P variants, but the user will need to

modify the board to make it compatible for the SPI/tSPI devices (see Section 4.4).

Note

For the DRV8311H Hardware settings to work, R7 must be removed and 3.3 V must be supplied

externally or from the LaunchPad. Please see section DRV8311H Compatability.

Table of Contents

1 Cautions and Warnings..........................................................................................................................................................2

2 Introduction.............................................................................................................................................................................3

3 Quick Start Guide....................................................................................................................................................................5

4 Hardware and Software Overview.........................................................................................................................................6

4.1 Hardware Connections Overview – DRV8311HEVM + LAUNCHXL-F280049C................................................................6

4.2 Connection Details............................................................................................................................................................. 6

4.3 LED Lights..........................................................................................................................................................................8

4.4 DRV8311HEVM Configurability – Jumpers and Resistors................................................................................................. 9

5 Hardware Setup.................................................................................................................................................................... 15

6 Firmware and GUI Application.............................................................................................................................................16

6.1 C2000 InstaSPIN Universal GUI...................................................................................................................................... 16

6.2 Motor Identification...........................................................................................................................................................17

6.3 Sensorless-FOC Commutation........................................................................................................................................ 18

6.4 Torque Control, Speed Control, and Advanced Modulation Techniques..........................................................................19

6.5 SPI Communication (DRV8311S only).............................................................................................................................19

7 Schematics............................................................................................................................................................................21

7.1 Main Supply / Status LEDs.............................................................................................................................................. 21

7.2 DRV8311H/S/P.................................................................................................................................................................21

7.3 3.3V Buck Regulator........................................................................................................................................................ 22

7.4 Voltage Reference............................................................................................................................................................23

7.5 LaunchPad Connections.................................................................................................................................................. 23

7.6 Connectors & Interface.................................................................................................................................................... 24

7.7 Voltage Sense & Protection............................................................................................................................................. 25

8 Revision History................................................................................................................................................................... 26

Trademarks

All trademarks are the property of their respective owners.

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DRV8311HEVM User's Guide 1

1 Cautions and Warnings

Observe the following cautions and warnings as printed on the EVM board.

HOT SURFACE:

Caution Hot Surface! Contact may cause burns. Do not touch. Please take the proper

precautions when operating.

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2 Introduction

The DRV8311 is a 3-V to 20-V, 5-A peak integrated three-phase integrated FET driver IC for motor drive

applications. It provides three accurately trimmed and temperature compensated half-bridges capable of directly

driving a 3-phase Brushless-DC motor. The DRV8311 integrates multiple control interface options, low-side

integrated current sense resistors and sense amplifiers, a 3.3-V 100-mA LDO regulator, and a variety of

protection and control features. The device is available in the hardware variant (DRV8311H), SPI variant

(DRV8311S), and Texas Instruments SPI (tSPI) variant (DRV8311P) as shown in Table 2-1 For more information

on tSPI, please see Section 4.4.3 and visit the DRV8311 product page for more resources.

Table 2-1. DRV8311x Device Variants

Device Name Device Description

DRV8311H Hardware variant

DRV8311S SPI variant

DRV8311P Texas Instruments SPI (tSPI) variant

The DRV8311HEVM can be interfaced with the TMS320F280049C microcontroller on the LAUNCHXL-

F280049C LaunchPad in correspondence with the reference software to provide the algorithm to the DRV8311

to control the BLDC motor.

This document serves as a startup guide to supplement the DRV8311HEVM + LAUNCHXL-F280049C BLDC

motor control demo kit. It also is intended to help engineers design, implement, and validate reference hardware

and software for the LaunchPad MCU and DRV8311. For step by step details on connecting the LAUNCHXL-

F280049C + DRV8311HEVM, installing software, and running the project to spin a motor, refer to Section 5.

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DRV8311HEVM User's Guide 3

Figure 2-1. DRV8311HEVM PCB Layout

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3 Quick Start Guide

The DRV8311HEVM requires a power supply with a recommended operating range from 3-V to 20-V. To setup

and power the EVM, follow the sequence below:

1. Connect the power supply ground to the GND of the 2-pin power connector J3 and the power supply positive

terminal to the VM pin of J3. Ensure jumpers JP1, JP2, and JP3 of the LAUNCHXL-F280049C are populated

to ensure that 3.3 V and 5 V are powered from the LaunchPad.

2. Connect the motor phases to OUTA, OUTB, and OUTC in the correct order. For sensored applications,

connect the Hall sensors to the appropriate locations on the 5-pin connector J4 as shown in Figure 4-2.

Select 3V3 or 5V on jumper J6 to choose the Hall power source voltage.

3. Mate the DRV8311HEVM onto the top half of the LAUNCHXL-F280049C (LaunchPad Headers J1/J3 and

J2/J4) as shown in Figure 4-3. The motor and power connectors should face the same direction as the

Micro-USB connector on the LaunchPad.

4. Connect a Micro-USB cable from the computer into the Micro USB connector on the top of the LAUNCHXL-

F280049C.

5. Power on the DRV8311HEVM.

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4 Hardware and Software Overview

4.1 Hardware Connections Overview – DRV8311HEVM + LAUNCHXL-F280049C

Figure 4-1 shows the major hardware blocks of the DRV8311HEVM. The DRV8311HEVM is designed for an

input supply from 3-V to 20-V. The DRV8311 includes three integrated half-bridges that can drive up to 5-A peak

current which can be used in conjunction with an external MCU for sensored or sensorless trapezoidal control,

sinusoidal control, or Field-oriented control (FOC).

GND

Motor Connectors

and Test Points

Hall

connectors

Current Shunt

Amplifier Outputs

Power

DRV8311S/H/P

3.3V buck

regulator

tSPI Address Select

(DRV8311P only)

VIN_AVDD / Hall

Power select

Hardware variant

jumpers (DRV8311H

only)

GND

Voltage rail test

points / LEDs

SPI enable / test points

(DRV8311S only) VM test point and LED

Figure 4-1. Major hardware blocks of the DRV8311HEVM

4.2 Connection Details

Figure 4-2 shows the power supply and motor connections made to the DRV8311HEVM in order to spin a

3-phase sensored or sensorless Brushless-DC motor.

A 3-V to 20-V power supply or battery is connected to the VM and GND terminals. The three phases of the

BLDC motor connect directly to the OUTA, OUTB, and OUTC terminals of the screw terminal provided on the

DRV8311HEVM.

For sensored applications, to connect the Hall sensor outputs to the Hall connectors on the DRV8311HEVM,

push down on the respective terminals to open the sockets and insert the Hall sensor wires.

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HALL_PWR

HALLA

HALLB

HALLC

GND

OUTC VM GND

OUTB OUTA

Figure 4-2. Connections from motor to DRV8311HEVM

Figure 4-3 shows where the Micro-USB cable is plugged in to the LAUNCHXL-F280049C to provide

communication between the LaunchPad firmware and GUI as well as the correct installment of the

DRV8311HEVM to the J1/J3 and J2/J4 headers of the LaunchPad.

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Figure 4-3. DRV8311HEVM on headers J1/J3 and J2/J4 of LaunchPad and Micro-USB plugged into

LaunchPad

4.3 LED Lights

There are LED indicators on both the LAUNCHXL-F280049C and DRV8311HEVM when power is provided and

the micro USB cable is plugged in to the LaunchPad.

The DRV8311HEVM has 4 status LEDs on the board. By default, the VM and 3V3 LEDs will light up when the

board is powered on. The fault LED will light up when the driver reports a fault, and the MCU LED (tied to

GPIO59) can be used for debugging and validation. Table 4-1 shows the LED descriptions, with the LEDs that

are on during power up indicated in bold. Figure 4-4 shows the LED locations on the EVM.

Table 4-1. Description of DRV8311HEVM LEDs (on during power up in bold)

Designator Name Color Description

D2 3V3 Green AVDD is outputting 3.3 V

D3 nFAULT Red Lights up when fault condition

has occurred on DRV8311

D4 VM Green Power is supplied to the board

D5 MCU_LED Orange MCU debugging

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VM LED

MCU LEDnFAULT LED 3.3V LED

Figure 4-4. DRV8311HEVM LEDs

4.4 DRV8311HEVM Configurability – Jumpers and Resistors

The DRV8311HEVM includes a variety of user-selectable jumpers and unpopulated components on the PCB

to choose user settings and evaluate the DRV8311S, DRV8311H, or DRV8311P device. A summary of those

selectable settings is listed in Table 4-2 (defaults in bold) and can be seen on the board in Figure 4-5. Section

4.4.2 and Section 4.4.3 describes the changes that need to be made to the board in order to use the SPI and

tSPI variants as the main motor driver IC.

Table 4-2. Description of user selectable settings on DRV8311HEVM (H variant defaults in bold)

Id. Setting Name Description Position Function

A AD0 select

AD1 select

(DRV8311P only) Use

J8 and J7 jumpers to

select device address.

DNP jumper if DRV8311P

is not used.

J8 = Left AD0 = 0

J8 = Right AD0 = 1

J7 = Left AD1 = 0

J7 = Right AD1 = 1

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Table 4-2. Description of user selectable settings on DRV8311HEVM (H variant defaults in bold)

(continued)

Id. Setting Name Description Position Function

B GAIN select (DRV8311H only) Use J11

to select desired gain

settings. DNP jumper if

DRV8311H is not used.

J11 = Bottom 0.25 V/A

J11 = Middle 0.5 V/A

J11 = No Jumper 1 V/A

J11 = Top 2 V/A

C SLEW select (DRV8311H only) Use J10

jumper to select desired

slew rate settings. DNP

jumper if DRV8311H is not

used.

J10 = Bottom 25 V/us

J10 = Middle 50 V/us

J10 = No Jumper 125 V/us

J10 = Top 200 V/us

D MODE select (DRV8311H only) Use J12

jumper to select desired

PWM mode. DNP jumper

if DRV8311H is not used.

J12 = Bottom 6x PWM mode

J12 = Middle 6x PWM mode

J12 = No Jumper 3x PWM mode

J12 = Top 3x PWM mode

E Power LaunchPad from

buck

0-ohm resistor used to

supply power from buck

to LaunchPad. DNP

if powering LaunchPad

externally see section _ on

MCU Power

See section 3.4.4 MCU

power options

F Supply 5 V from

LaunchPad

Supplies 5 V to some

of the EVM circuitry from

the F280049C LaunchPad

boost converter.

R15 is populated Supply 5 V from

LaunchPad

R15 is DNP Supply 5 V externally from

TP23

G Supply 3.3 V from buck Connects buck 3.3 V

voltage to supply main 3.3

R7 is populated Connects buck output to

supply 3.3 V rail

R7 is DNP Supply 3.3 V externally

from TP22

H VIN_AVDD select Use J5 to supply

VIN_AVDD voltage from

either VM or 5 V.

J5 = Left VIN_AVDD supplied from

J5 = Right VIN_AVDD supplied from

5 V

I HALL_PWR select Use J6 to supply Hall

power from 3.3 V or 5 V.

J6 = Left Hall power supplied

from 3.3 V

J6 = Right Hall power supplied from 5

J S/H/P variant connections Populate specific resistors

to properly use the SPI,

Hardware, or tSPI variant.

Populate R1, R8, R9, R10,

R11, and R13

DNP R12 and R41

SPI connections

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