Texas Instruments DRV8311HEVM User manual

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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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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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
V.
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
VM
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
V
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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