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Table of Contents
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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Cautions and Warnings
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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.
2
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Introduction
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 LAUNCHXLF280049C 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 LAUNCHXLF280049C + DRV8311HEVM, installing software, and running the project to spin a motor, refer to Section 5.
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Introduction
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Figure 2-1. DRV8311HEVM PCB Layout
4
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Quick Start Guide
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 LAUNCHXLF280049C.
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).
SPI enable / test points
(DRV8311S only)
Motor Connectors
and Test Points
Power
VM test point and LED
GND
tSPI Address Select
(DRV8311P only)
3.3V buck
regulator
Hardware variant
jumpers (DRV8311H
only)
VIN_AVDD / Hall
Power select
DRV8311S/H/P
Hall
connectors
GND
Current Shunt
Amplifier Outputs
Voltage rail test
points / LEDs
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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OUTC OUTB OUTA
VM
GND
HALL_PWR
HALLA
HALLB
HALLC
GND
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)
8
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
nFAULT LED
MCU 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
B
GAIN select
(DRV8311H only) Use J11 J11 = Bottom
to select desired gain
J11 = Middle
settings. DNP jumper if
J11 = No Jumper
DRV8311H is not used.
C
D
SLEW select
(DRV8311H only) Use J10
jumper to select desired
slew rate settings. DNP
jumper if DRV8311H is not
used.
MODE select
Position
Function
0.25 V/A
0.5 V/A
1 V/A
J11 = Top
2 V/A
J10 = Bottom
25 V/us
J10 = Middle
50 V/us
J10 = No Jumper
125 V/us
J10 = Top
200 V/us
(DRV8311H only) Use J12 J12 = Bottom
jumper to select desired
J12 = Middle
PWM mode. DNP jumper
if DRV8311H is not used. J12 = No Jumper
J12 = Top
6x PWM mode
6x PWM mode
3x PWM mode
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
R15 is populated
of the EVM circuitry from
the F280049C LaunchPad
R15 is DNP
boost converter.
Supply 5 V from
LaunchPad
Connects buck 3.3 V
R7 is populated
voltage to supply main 3.3
V.
R7 is DNP
Connects buck output to
supply 3.3 V rail
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
5V
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
G
H
I
J
10
Supply 3.3 V from buck
VIN_AVDD select
HALL_PWR select
Supply 5 V externally from
TP23
Supply 3.3 V externally
from TP22
S/H/P variant connections Populate specific resistors Populate R1, R8, R9, R10, SPI connections
to properly use the SPI,
R11, and R13
Hardware, or tSPI variant. DNP R12 and R41
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(A) J8 = AD0 select (tSPI var.)
J7 = AD1 select (tSPI var.)
(B) J11 = GAIN select (H/W var.)
(G) R7 = Supply 3V3 from buck
(H) J5 = VIN_AVDD select
(C) J10 = SLEW select (H/W var.)
(I) J6 = HALL_PWR select
(D) J12 = MODE select (H/W var.)
(J) R1, 8, 9, 10, 11, 13 = SPI connections
R1, 12 = Hardware connections
R8, 9, 10, 12, 13, 41 = tSPI connections
(E) R14 = Power Launchpad from Buck
(F) R15 = Supply 5V from Launchpad
(K) R22 = VREF supplies CSA REF
(L) Optional CSA output filtering
Figure 4-5. User-selectable jumpers and DNP components on DRV8311HEVM
4.4.1 DRV8311H Compatibility
The DRV8311HEVM default is the DRV8311H (Hardware variant), which can be used to spin a 3-phase
Brushless-DC motor with selectable modes configured with hardware settings as shown in Table 4-3.
Note
DRV8311H Hardware settings are stuck at default settings (GAIN = 0.5V/A, SLEW = 200V/us, MODE
= 6x PWM) for MD045A. N FAULT must be pulled up externally before VM > UVLO to latch the correct
H/W settings. To fix, implement once of the following workarounds:
1. If using the DRV8311HEVM with an external MCU, remove R7 to disconnect buck supply. Apply
external 3.3V to the 3.3V test point. Power on the DRV8311HEVM.
2. If using the DRV8311HEVM with the LAUNCHXL-F280049C, remove R7 to disconnect buck
supply. Connect the LaunchPad to the DRV8311HEVM, and connect the micro-USB cable into the
LaunchPad to power the 3.3V supply to the DRV8311HEVM. Power on the DRV8311HEVM.
When using the DRV8311H, resistors R1, and R12 must be populated with 0-ohm resistors, and resistors R8,
R9, R10, R11, R13, and R41 must be left unpopulated. This allows the user to select settings using the MODE,
SLEW, and GAIN pins by using jumpers on J10, J11, and J12. An outline of the various hardware selectable
settings can be found below.
Table 4-3. Description of Hardware settings for DRV8311H
Setting
Position
Description
MODE
AVDD
3x PWM Mode
Hi-Z (DNI)
3x PWM Mode
47k to GND
6x PWM Mode
GND
6x PWM Mode
AVDD
200 V/μs
Hi-Z (DNI)
125 V/μs
47k to GND
50 V/μs
GND
25 V/μs
SLEW
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Table 4-3. Description of Hardware settings for DRV8311H (continued)
Setting
Position
Description
GAIN
AVDD
2 V/A
Hi-Z (DNI)
1 V/A
47k to GND
0. 5 V/A
GND
0.25 V/A
4.4.2 DRV8311S Compatibility
The DRV8311HEVM is compatible with the DRV8311S (SPI variant) to spin a 3-phase Brushless-DC motor. The
DRV8311S replaces the hardware settings (MODE, SLEW, and GAIN) as well as the nSLEEP setting with 4 SPI
signals: SDI, SDO, SCLK, and nSCS.
When using the DRV8311S, resistors R1, R8, R9, R10, and R11 must be populated with 0-ohm resistors, R13
must be populated with a 5.1k ohm resistor, and resistors R12 and R41 must be unpopulated. Additionally, the
jumpers must be removed from J10, J11, and J12. This properly connects the SPI signals to the correct pins on
the device.
4.4.3 DRV8311P Compatibility
The DRV8311HEVM is compatible with the DRV8311P (tSPI variant) to spin a 3-phase Brushless-DC motor
using enhanced Texas Instruments SPI (tSPI). tSPI is a protocol that allows for multiple motor drivers to be
controlled via one SPI bus. Each device has a selectable address in hardware and tSPI protocol allows for
individual control of each driver through SPI communication from a single microcontroller unit (MCU).
When using the DRV8311P, resistors R8, R9, R10, R12, and R41 must be populated with 0-ohm resistors, R13
must be populated with a 5.1k ohm resistor, and resistors R1 and R11 must be unpopulated. Additionally, the
jumpers must be removed from J10, J11, and J12. This properly connects the tSPI signals to the correct pins on
the device. In order to set the address of the device, jumpers must be used on J7 and J8 to select AD0 and AD1.
This address sets the unique address of the device to allow tSPI to properly communicate with the driver. Up to 4
DRV8311P EVMs can be controlled with a single MCU through the tSPI protocol, but a unique address must be
set for each device using J7 and J8 jumpers.
4.4.4 MCU Power Options
The DRV8311HEVM has several options for powering the LAUNCHXL-F280049C or an external MCU. Table 4-4
provides a description of the various MCU power options.
Table 4-4. MCU power options
LAUNCHXL-F280049C connections
DRV8311HEVM connections
Result
JP1, JP2, and JP3 are populated
R14 and R7 are populated
MCU is powered both from the USB of the
LaunchPad and the 3V3 rail of the EVM’s
buck regulator.
JP1, JP2, and JP3 are populated
R14 is populated, R7 is not populated, no
external 3V3 supplied to EVM
MCU is powered from the USB of the
LaunchPad, and the LaunchPad will supply
3V3 to the EVM.
JP1, JP2, and JP3 are populated
R14 is populated, R7 is not populated,
external 3V3 supplied to EVM through TP22
MCU is powered both from the USB of
the LaunchPad and from the external 3V3
supplied to the EVM
JP1, JP2, and JP3 are populated
R14 is not populated
MCU is powered from USB power supply
JP3 is populated, JP1 and JP2 are not
populated
R14 and R7 is populated
MCU is powered completely from the 3V3 of
the buck of the EVM
JP3 is populated, JP1 and JP2 are not
populated
R14 is populated, R7 is not populated,
external 3V3 supplied to EVM through TP22
MCU is powered completely from the external
3V3 supplied to the EVM
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4.4.5 Interfacing DRV8311HEVM and LAUNCHXL-F280049C LaunchPad
The DRV8311HEVM has 40 pins with different functions. These pins are interfaced with the
LAUNCHXLF280049C LaunchPad development kit and are mapped appropriately to receive the functionalities
of the DRV8311H device. These 40 pins are grouped into 4 ports in respect to the LAUNCHXL-F280049C (J1 to
J4). Table 4-5 and Table 4-6 list the interfacing of these ports of the DRV8311HEVM headers J3 and J4.
Table 4-5. Connections for Header J1 on DRV8311HEVM (DNP in bold)
J1 Pin Number
DRV8311HEVM Function
LAUNCHXL-F280049C Function Description
1
3.3 VBK
+3.3 V
3.3 V LaunchPad Supply
2
5 V supply
+5 V
5 V Boost from LaunchPad
3
Not used
PGA1/3/5_GND
Not used
4
AGND
GND
GND connection
5
Not used
GPIO13/SCIBRX
Not used
6
VSENA
ADCINA5
Phase A Voltage Sense
7
HALLC
GPIO40/SCIBTX
Hall sensor C from motor
8
VSENB
ADCINB0
Phase B Voltage Sense
9
nSLEEP (DNP)
NC
For internal use only
10
VSENC
ADCINC2
Phase C Voltage Sense
11
Not used
ADCINB3/VDAC
Not used
12
VSENVM
ADCINB1
VM Bus Voltage Sense
13
SCLK
SPIACLK
SPI Clock (DRV8311S and
DRV8311P only)
14
ISENA
ADCINB2
Phase A low side Current Sense
15
nFAULT (DNP)
ADCINC4
For internal use only
16
ISENB
ADCINC0
Phase B low side Current Sense
17
nSLEEP
GPIO37
Active-low input to sleep pin
18
ISENC
ADCINA9
Phase C low side Current Sense
19
nFAULT
GPIO35
Active-low output from fault pin
20
C_TAP
ADCINA1
ADC for Center Tap sensing
Table 4-6. Connections for Header J2 on DRV8311HEVM
J2 Pin Number
DRV8311HEVM Function
LAUNCHXL-F280049C Function Description
1
INHA
GPIO10/PWM6A
PWM used to switch High-side
FET of Phase A (DRV8311H and
DRV8311S only)
2
AGND
GND
GND connection
3
INLA
GPIO11/PWM6B
PWM used to switch Low-side
FET of Phase A (DRV8311H and
DRV8311S only)
4
nSCS
SPIASTE
SPI active-low chip select
(DRV8311S only)
5
INHB
GPIO8/PWM5A
PWM used to switch High-side
FET of Phase B (DRV8311H and
DRV8311S only)
6
Not used
NC
Not used
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Table 4-6. Connections for Header J2 on DRV8311HEVM (continued)
J2 Pin Number
DRV8311HEVM Function
LAUNCHXL-F280049C Function Description
7
INLB/PWM_SYNC
GPIO9/PWM5B
PWM used to switch Low-side
FET of Phase B (DRV8311H and
DRV8311S), or PWM used to
synchronize PWM signals with
MCU (DRV8311P)
8
Not used
NC
Not used
9
INHC
GPIO4/PWM3A
PWM used to switch High-side
FET of Phase (DRV8311H and
DRV8311S only)
10
Not used
XRSn
Not used
11
INLC
GPIO5/PWM3B
PWM used to switch Low-side
FET of Phase C (DRV8311H and
DRV8311S only)
12
SDI
SPIASIMO
SPI data input (DRV8311S and
DRV8311P only)
13
HALLA
GPIO58
HALL sensor A from motor
14
SDO
SPIASOMI
SPI data output (DRV8311S and
DRV8311P only)
15
HALLB
GPIO30
HALL sensor B from motor
16
Not used
GPIO39
Not used
17
Not used
GPIO18/XCLKOUT (not
connected)
Not used
18
Not used
GPIO23/LED4
LED reserved on LaunchPad
19
CSA_REF (DNP)
GPIO25
For internal use only
20
MCU_LED
GPIO59
Visual feedback for LaunchPad
connection
14
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Hardware Setup
5 Hardware Setup
The hardware required to run the motor control is the LAUNCHXL-F280049C LaunchPad development kit, the
DRV8311HEVM, a Micro-USB cable, and a power supply with a DC output from 3-V to 20-V. Follow these steps
to set up the evaluation module:
1) Ensure all resistors or jumpers are set up accordingly according to the device variant used. The
DRV8311HEVM by default is populated with and configured for the DRV8311H (hardware variant). If using
the DRV8311S or DRV8311P, please follow row J of Table 4-2 to configure the board for the DRV8311x device
variant populated for U1.
2) Mate the DRV8311HEVM board to the top half of the LAUNCHXL-F280049C LaunchPad development kit
(mates to J1/J3 and J2/J4 of LaunchPad, as in Figure 4-3).
NOTE: Observe the correct orientation when placing DRV8311HEVM to the LAUNCHXL-F280049C. The motor and power connectors
should face to the LaunchPad’s Micro-USB connector.
3) Connect the three phases from the brushless-DC motor to the 3-pin connector J9 on DRV8311HEVM. Phases
OUTA, OUTB, and OUTC are labeled in white silkscreen on the PCB top layer.
NOTE: If using a sensored algorithm on the LaunchPad development kit, connect Hall sensors to the 5-pin connector J4.
4) Connect the DC power supply to header J5.
NOTE: Observe the correct polarity VM and GND connections on the DRV8311HEVM connector J3.
5) Connect a Micro-USB cable to the LaunchPad development kit and computer.
6) Turn on the power supply and power up the PCB.
If using the DRV8311HEVM with an external microcontroller, make the connections needed on the male headers
on the top of the board or female connectors on the bottom side of the board.
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6 Firmware and GUI Application
The DRV8311HEVM can implement sensored, sensorless, or Field-oriented control for commutating a 3-phase
Brushless-DC motor. The supported firmware is a sensorless Field-oriented control algorithm adapted from
Texas Instruments’ MotorControl SDK Library of motor solutions. The firmware includes motor identification and
a sensorless FOC algorithm to spin the motor. The firmware uses the DRV8311HEVM InstaSPIN Universal GUI
to run the algorithm and includes tabs to read from and write to the DRV8311 SPI registers (DRV8311S only).
The steps below will describe how to identify useful motor parameters, spin the motor, and work with the
DRV8311S SPI registers. For more information on more advanced features of the C2000 InstaSPIN Universal
GUI such as torque and speed control, MTPA, or Field-weakening, consult the MotorControl SDK InstaSPIN Lab
Guide (in the MotorControl Software Development Kit tool page) and InstaSPIN-FOC and InstaSPIN-MOTION
User’s Guide.
6.1 C2000 InstaSPIN Universal GUI
1. Follow the instructions in Section 5 and ensure the LAUNCHXL-F280049C is connected to the PC and the
power supply is turned on to the DRV8311HEVM PCB.
2. Search for the GUI Composer Galllery through https://dev.ti.com/gallery/search/drv8311xevm. You will to
login with a myTI account in order to access the GUI.
3. Accept the readme as shown in Figure 6-1 and check the bottom left hand corner of the screen for
“Hardware Connected”. Once connected, the GUI will flash the algorithm to the MCU as shown in Figure 6-2.
Figure 6-1. C2000 InstaSPIN Universal GUI Readme
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Figure 6-2. C2000 InstaSPIN Universal GUI Downloading Program
6.2 Motor Identification
1. Check the “Enable System” box to enable the InstaSPIN algorithm and run preset calibrations. Wait for the
“OffsetCalc” button to uncheck automatically to finish calibrating board offsets.
2. Check the “Run” box to begin the motor identification algorithm as shown in Figure 6-3. The motor will
begin to spin and stop as it goes through many states to calculate and identify useful motor parameters for
sensorless Field-oriented control. This should take no more than a couple of minutes.
3. Once the motor identification process is complete, the “Motor Identified” indicator will light up, the “Run” box
will be automatically unchecked, and the values Rs, Rs Online, Ls-d, Ls-q, Flux, and Rr will update for that
motor as shown in Figure 6-4. These values will be automatically used for Field-oriented control.
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Figure 6-3. C2000 InstaSPIN Universal GUI Running motor identification
Figure 6-4. Motor identification complete using the DRV8311HEVM InstaSPIN GUI
6.3 Sensorless-FOC Commutation
1. To spin the motor with sensorless FOC, check the “Run” box again. The motor will spin with sinusoidal
current at the speedRef (Hz) value in the GUI, which is automatically set to 20.0 Hz. Use the speedRef (Hz)
input to change the current speed of the motor as shown in Figure 6-5. The GUI automatically calculates
the current reference speed using the variable speed (Hz) and compares it to the trajectory speed variable
speedTraj (Hz) to calculate the Speed Error (Hz) and as a percentage.
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Figure 6-5. Sensorless-FOC commutation using the DRV8311HEVM InstaSPIN GUI
6.4 Torque Control, Speed Control, and Advanced Modulation Techniques
To implement more advanced modulation techniques such as torque control, speed control, and algorithms such
as MTPA, Field-weakening, and PowerWarp (EPL) using the DRV8311HEVM InstaSPIN Universal GUI, please
consult the MotorControl SDK InstaSPIN Lab Guide found in MotorControl SDK.
This document contains detailed lab overviews of how to implement each advanced modulation technique when
using sensorless FOC to spin the BLDC motor in Code Composer Studio. In order to use the project with the
GUI, the user must build and compile the project in CCS, and import the .out binary file for that project into the
GUI properties through GUI Composer. More information can be found in the README when the GUI is first
opened.
6.5 SPI Communication (DRV8311S only)
The DRV8311HEVM InstaSPIN_Universal_GUI includes three SPI register tabs for the DRV8311S: Status
Registers, Control Registers, and PWM Generation Registers. For InstaSPIN-FOC, only the Status and Control
Registers will be used since internal PWM generation is not a supported use case for InstaSPIN-FOC for the
DRV8311H and DRV8311S.
1. Click on the “DRV8311S Control Registers” tab to access the DRV8311S Control Registers as shown in
Figure 6-6.
2. Choose the desired settings by selecting from the drop-down menus for each setting. Clicking a setting
description selects the bits required for that control register setting. Consult the DRV8311 datasheet (Section
8.6 Register Map) for detailed definitions of settings.
3. Click on “Write” to write to all control registers in the device with the configured settings.
4. To read all status and control registers in the device, click on “Read”. The statuses and settings will
auto-populate in the DRV8311S Status Registers and Control Registers.
5. Alternatively, to write data to a specific address, input the address and data in decimal into the address and
data inputs above the “Manual Write” box. Click on the “Manual Write” box to write the data to that address.
To read data from a specific address, input the address in decimal into the address above the “Manual Read”
box. Click on the “Manual Write” box to read the data from that address.
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Figure 6-6. DRV8311HEVM InstaSPIN GUI SPI Control Registers
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Schematics
7 Schematics
7.1 Main Supply / Status LEDs
Figure 7-1. Main Supply / Status LEDs schematic
7.2 DRV8311H/S/P
Figure 7-2. DRV8311H/S/P schematic
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7.3 3.3V Buck Regulator
Figure 7-3. 3.3V Buck Regulator schematic
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Schematics
7.4 Voltage Reference
Figure 7-4. Voltage Reference schematic
7.5 LaunchPad Connections
Figure 7-5. LaunchPad Connections schematic
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7.6 Connectors & Interface
Figure 7-6. Connectors & Interface schematic
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Schematics
7.7 Voltage Sense & Protection
Figure 7-7. Voltage Sense & Protection schematic
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Revision History
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8 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
DATE
August 2021
26
REVISION
*
NOTES
Initial Release
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