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Texas Instruments DRV8353Rx-EVM (Rev. A) User guides
User's Guide
SLVUB79A – August 2018 – Revised November 2018
DRV8353Rx-EVM User’s Guide
This document is provided with the DRV8353Rx-EVM customer evaluation module (EVM) as a
supplement to the DRV835x 100-V Three-Phase Smart Gate Driver data sheet. This user's guide details
the hardware implementation of the EVM.
Figure 1. DRV8353RS-EVM
NOTE: Operate this EVM only at the default IDRIVE setting 150mA/300mA sink/source current.
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CAUTION
The DRV8353Rx-EVMs are designed to be evaluated only with the ISOF28027F MCU PCB accompanying this kit. This MCU PCB is a specially
modified version of the LAUNCHXL-F28027F that maintains functionality as the
LaunchPad™ development kit while maintaining USB isolation from high
voltage transient feedback up to the 3000 VRMS. The 3.3VDC power to the ISOF28027F is provided from this EVM. Make sure ISO-F28027F's S4 switch is set
to OFF and S1 to ON-ON-ON.
WARNING
Although the ISO-F28027F MCU PCB provides isolation of up to
3000 VRMS to the USB, the DRV8353Rx-EVM itself is considered an
electrically live EVM and is not intended nor designed for isolation
voltage testing. Voltages exceeding the standard EVM ratings as
specified on the data sheet may cause personal injury, electrical
shock hazard, damage the EVM, or a combination.
Additionally, do not leave power connections to the EVM
connected while not in operation.
For power up, follow the sequence of first making sure all external
connections are completed except the USB. Then, apply power to
the power connector. Once the 3.3 VDC LED is on, connect the USB
to the computer. If the correct firmware is loaded, LP_LED will
constantly be asserted high with an orange emission.
WARNING
Hot surface. Contact may cause burns. Do not Touch.
WARNING
High Voltage. Electric shock is possible when connecting board to
live wire. The board should be handled with care by a professional.
For safety, use of isolated test equipment with overvoltage and
overcurrent protection is highly recommended.
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CAUTION
!
Do not leave the EVM powered when unattended.
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1
2
3
4
Contents
Introduction ................................................................................................................... 5
1.1
Overview ............................................................................................................. 5
1.2
Purpose and Scope ................................................................................................ 5
Hardware and Software Overview ......................................................................................... 6
2.1
Hardware Connections Overview – DRV8353Rx-EVM + ISO-F28027F .................................... 6
2.2
Connection Details.................................................................................................. 9
2.3
Fault Handling and Switch Functionality ........................................................................ 9
2.4
Interfacing DRV8353Rx-EVM and ISO-F28027F ............................................................... 9
GUI Application Initialization ............................................................................................. 11
3.1
Hardware Setup ................................................................................................... 11
3.2
EVM Default Component Configurations ...................................................................... 11
References .................................................................................................................. 11
List of Figures
1
DRV8353RS-EVM ........................................................................................................... 1
2
Block Diagram................................................................................................................ 5
3
Hardware Connections Overview 1 ....................................................................................... 6
4
Hardware Connections Overview 2 ....................................................................................... 7
5
Hardware Connections Overview 3
.......................................................................................
8
List of Tables
1
DRV8353Rx-EVM J1 Pin Connections ................................................................................... 9
2
DRV8353Rx-EVM J2 Pin Connections .................................................................................. 10
Trademarks
LaunchPad, InstaSPIN-FOC, InstaSPIN, InstaSPIN-MOTION, Piccolo are trademarks of Texas
Instruments.
All other trademarks are the property of their respective owners.
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DRV8353Rx-EVM User’s Guide
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Introduction
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1
Introduction
1.1
Overview
The DRV8353Rx is a gate driver IC for three-phase motor drive applications. It provides three highaccuracy trimmed and temperature compensated half-bridge drivers, each capable of driving high-side
and low-side N-type MOSFETs.
Both SPI and hardware interface variants provide fault reporting and modifiable parameter settings such
as current control options for slew rate control of the gate drivers and protection features.
Tagging along with the hardware of DRV8353Rx, the TMS320F28027F microcontroller based board has
loaded reference software that provides the necessary gating pulses to the DRV8353Rx to control the
BLDC motors using the InstaSPIN-FOC™ software.
9 to 75 V
Controller
SPI or H/W
nFAULT
Current Sense
350 mA
Three-Phase
Smart Gate Driver
Protection
Drain
Sense
Gate Drive
N-Channel
MOSFETs
DRV835x
PWM
7 to 100 V
M
Current
Sense
3x Shunt Amplifiers
Buck Regulator
Figure 2. Block Diagram
1.2
Purpose and Scope
This document is designed to be used as a startup guide and to supplement the DRV835X +
TMS320F28027F BLDC motor control demo code kit. This document is intended for the engineers
involved in the design, implementation, and validation of DRV835X + TMS320F28027F reference
software.
The scope of this document is to provide the user with a guide to evaluate the DRV8353Rx device with a
TMS320F28027F isolated board. This document covers the hardware connections required between
DRV8353Rx and the MCU board. When the HW connections are complete, the user is required to
download the necessary tools and SW to spin a motor.
The reference SW is composed of InstaSPIN™ software with field-oriented control algorithm for BLDC
motor identification and control. For additional information on these algorithms, refer to InstaSPIN-FOC™
and InstaSPIN-MOTION™ User's Guide and TMS320F28026F, TMS320F28027F InstaSPIN™-FOC
Software Technical Reference Manual
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Hardware and Software Overview
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2
Hardware and Software Overview
2.1
Hardware Connections Overview – DRV8353Rx-EVM + ISO-F28027F
Hardware Connections Overview 2 shows the significant blocks of the hardware where the DRV8353RxEVM is mounted on the ISO-F28027F. The DRV8353Rx-EVM is designed for an input supply from 9 VDC
to 95 VDC and up to 15-A continuos drive current. It comes with three half h-bridges capable of driving a
three-phase BLDC motor implementing sensored or sensorless control. Hall sensor pins a, b, c are
connected to pins J2-3, J2-5, and J2-15 of the J2 female header on the motor driver PCB. The 3.3 VDC
supply to the Hall sensors is supplied from the 3.3V LDO on the EVM.
GND
Connector
nFAULT
LED
GHx and GLx
Test Points
MOTx, VDRAIN and GND
Test Points
J6 Motor
Connector
Split Rail versus
Single Rail Resistors
3V3 LED
Lights up if 3V3 signal
has a correct magnitude
J5 Power
Connector
LP_LED
Lights up if the correct
firmware is loaded to
ISO-F280278F
GND Connector
Figure 3. Hardware Connections Overview 1
6
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Hardware and Software Overview
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Hall Connector
J3
Figure 4. Hardware Connections Overview 2
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Hardware and Software Overview
J1-2
J1-20
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3V3
NC
VSENVM
GND
NC
VSENA
NC
VSENB
INLB
NC
ENABLE
VSENC
INHC
NC
PT
ISENC
INLC
SDI
SCLK
ISENB
MODE
SDO
Nfault
ISENA
LP_LED HALLC
NC
IDRIVE
J1-1
J2-1
J2-2
INHA
GND
INLA
HALLA
INHB
HALLB
NC
GC2DRVID VDS
J2-20 NC
J2-1
nSCS/GAIN
NC
Figure 5. Hardware Connections Overview 3
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Hardware and Software Overview
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2.2
Connection Details
Figure 3 shows the power connector and motor phase connector. A supply voltage ranging from 9 VDC to
95 VDC connected to the voltage supply pins is acceptable. The DRV8353Rx-EVMs are designed to
operate in single rail (VM = VDRAIN) and split rail (separate power nodes VM and VDRAIN). VM has an
operating range of 9VDC-75VDC, while VDRAIN has an operating range of 7VDC-100VDC. By default, the
EVMs work in split rail configuration, with VM power derived from the12 VDC drop down output of the
LM5008A. For single rail configuration, connect R18 and disconnect R19. The LM5008A's power input is
the VDRAIN rail connecting to the power connectorJ5. Three phases of the BLDC motor are connected to
the three-phase motor socket J6 provided on the DRV8353Rx-EVM.
WARNING
To minimize the risk of potential shock hazard and personal injury,
remove all power interface connections and interfaces to the
DRV8353Rx-EVM when not in use.
Figure 5 shows the jumper pin connections required for the proper functioning of the software.
Figure 5 shows where the Mini-USB cable can be plugged in to power the ISO-F28027F FTDI
programmer and provide communication between the TMS320F28027F firmware and GUI.
2.3
Fault Handling and Switch Functionality
See the DRV835x 100-V Three-Phase Smart Gate Driver data sheet for more information on DRV8353Rx
fault support
One push button switch is dedicated on the ISO-F28027F development kit to reset the firmware (RST).
This switch is configured in the reference software.
2.4
Interfacing DRV8353Rx-EVM and ISO-F28027F
The DRV8353Rx-EVM has 40 female header pins with different functions. These pins are interfaced with
the ISO-F28027F development kit, which is mapped appropriately to receive the functionality of the motor
driver's header pins. These 40 pins are grouped into 4 ports. The following tables list the interfacing of
these ports with the TMS320F28027F device.
Table 1. DRV8353Rx-EVM J1 Pin Connections
J1 Pin
Number
DRV8353Rx-EVM
Function
TMS320F28027F
Function
2
3.3 V
3.3 V
1
Leaded Pin Hole
No Pin Extruded
4
VSENVM
ADC channel – A6
3
GND
GND
6
No function
UART RX to MCU
No function
5
VSENA
ADC channel – A7
Sensing A phase voltage
8
No function
UART TX to MCU
No function
7
VSENB
ADC channel – A3
Sensing B phase voltage
10
ENABLE
I/O pin with Interrupt
9
VSENC
ADC channel – A1
Sensing C phase voltage
12
POT
ADC channel – A4
Optional POT to vary the voltage 0-3.3 V on pin
11
ISENC
ADC channel – A0
Sensing C phase current
14
SCLK
UCBOCLK – SPI CLK
13
ISENB
ADC channel – B1
16
NFAULT
I/O pin with Interrupt
Description
3.3 V MCU supply
Leaded pin hole
Sensing VM supply voltage
GND connection
Logic low to enter a low-power sleep mode
Secondary function for pin SPI CLK
Sensing B phase current
Pulled logic low during a fault condition
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Table 1. DRV8353Rx-EVM J1 Pin Connections (continued)
J1 Pin
Number
DRV8353Rx-EVM
Function
TMS320F28027F
Function
15
ISENA
ADC channel – B3
18
No function
I/O pin
Software debug pins (optional)
17
IDRIVE
I/O pin
Sets gate drive peak current, 7-level input pin
(DRV8353RH devices only)
20
EVM ID
ADC channel – b7
19
VDS
I/O pin
Description
Sensing A phase current
EVM identification with voltage divider. DRV8353RS with
R58 = 6.04k, DRV8353RH with R58 = 8.06k
Sets VDS monitor threshold voltage, 7-level input pin
(DRV8353RH devices only)
Table 2. DRV8353Rx-EVM J2 Pin Connections
10
J2 Pin
Number
DRV8353Rx-EVM
Function
ISO-F28027F
Function
2
INHA
EPWM1A
1
GND
GND
4
INLA
EPWM1B
3
HALLA
SPI enable
6
INHB
EPWM2A
5
HALLB
I/O PIN with Interrupt
8
INLB
EPWM2B
7
No function
I/O pin
10
INHC
EPWM3A
9
No function
RST
12
INLC
EPWM3B
11
SDI
UCBOSIMO
14
MODE
I/O pin
13
SDO
UCBOSOMI
16
LED
I/O pin
15
HALLC
I/O pin With Interrupt
18
EVM ID
I/O pin
17
nSCS/GAIN
I/O PIN with Interrupt
20
EVM ID
I/O pin
Not for evaluation purposes
20
No connect
I/O pin
Not used
DRV8353Rx-EVM User’s Guide
Description
Secondary function, output to generate PWM for A
phase high-side switches
GND connections
Secondary function, output to generate PWM for A
phase low-side switches
Hall sensor A feedback from motor
Secondary function, output to generate PWM for B
phase high-side switches
Hall sensor B from motor
Secondary function, output to generate PWM for B
phase low-side switches
No function
Secondary function, output to generate PWM for C
phase high-side switches
No function
Secondary function, output to generate PWM for C
phase low-side switches
Secondary function for data input to DRV835xx
Sets the input control mode, 4-level input pin
(DRV8353RH devices only)
Secondary function for data output from DRV835xx
Visual feedback for faults.
Hall sensor C feedback from motor
Not for evaluation purposes
Active low enables serial interface communication
Sets the gain of the shunt amplifiers, 4-level input pin
(DRV8353RH devices only)
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GUI Application Initialization
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3
GUI Application Initialization
3.1
Hardware Setup
The hardware required to run the motor control is the ISO-F28027F development kit, the DRV8353RxEVM, a Mini-USB cable, and a power supply with a DC output from 9VDC to 95VDC. Follow these steps to
start up the DRV8353Rx-EVM:
Step 1. Dock the ISO-F28027F development kit to the DRV8353Rx-EVM to through the two 40-pin
headers J1 and J2.
NOTE: Observe the correct polarity of the 40-pin isolated board headers. The ISO-F28027F header
J1 should be connected to DRV8353Rx-EVM header J1 (header with the polarized pin) and
ISO-F28027F header J2 should be connected to DRV8353Rx-EVM header J2.
Step 2.
Connect the three phases from the brushless DC motor to the J6 connector on the
DRV8353Rx-EVM module. Phase A, B, and C are labeled MOTA, MOTB, and MOTC in white
silkscreen on the PCB top layer.
NOTE: If using the sensored firmware on the ISO-F28027F development kit, connect a brushless
DC motor Hall sensor inputs to header J3. If using sensorless firmware header J3 can be left
unconnected.
NOTE: If using 1x PWM Mode with the sensored firmware R48, R50, and R52 must be populated
with 0-Ω resistors to connect the Hall sensor input signals to the DRV.
Step 3.
Connect the DC power supply to header J5. The EVM has a 30 A rated fuse to protect
against large inrush current situations.
NOTE: Observe the correct polarity of +VM and GND connections on the DRV8353Rx-EVM
connection J5
Step 4.
Step 5.
3.2
Turn on the power supply and power up the PCB. VDRAIN connects directly to the LM5008A,
which ouputs 12 VDC to VM (split rail configuration) and to the 3.3 VDC LP2992 LDO.
Connect a Mini-USB cable to the ISO-F28027F development kit and computer.
EVM Default Component Configurations
Both EVMs have R19 connected and R18 disconnected for split rail configuration. These connections
must be switched for VM = VDRAIN. The LM5008A is used in the split rail configuration to power the VM
rail with 12 VDC. The buck's power input comes from VDRAIN. The 12 VDC is also the power input to the
LP2992IM5 LDO that outputs 3.3 VDC. If the LMR5008A is set to output 3.3 VDC, disconnect the R36 LDO
output of 3.3VDC and connect the 3.3 VDC nodes to the buck output by connecting R39. For high-speed
switching evaluation, this EVM can connect RC snubbers to the low side and high side switch nodes and
one can further evaluate slew rate performance of device with VGS capacitors. All of these components
are do-not populate (DNP) by default. Evaluate the half-bridge section of the schematic for information on
component designators.
The DRV8353RH-EVM is set by default to be evaluated with the IDRIVE at 150/300 mA, VDS sense at
0.2 VDC, MODE to 3x PWM, and GAIN to 10 V/V. To modify these values, refer to the data sheet for how
to setup these input pin structures.
The schematic can be found in the Design Files link in the DRV8353RS-EVM and DRV8353RH-EVM tool
page.
4
References
See these documents for additional reference:
• Texas Instruments, DRV8353Rx-EVM EVM User’s Guide
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References
•
•
•
•
•
•
12
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Texas Instruments, DRV835x-EVM InstaSPIN™ Software Quick Start Guide
Texas Instruments, DRV835x 100-V Three-Phase Smart Gate Driver data sheet
Texas Instruments, InstaSPIN-FOC™ and InstaSPIN-MOTION™ User's Guide
Texas Instruments, LM5008A 100-V 350-mA Constant On-Time Buck Switching Regulator data sheet
Texas Instruments, TMS320F2802x Piccolo™ Microcontrollers data sheet
Texas Instruments, TMS320F28026F, TMS320F28027F InstaSPIN-FOC™ Software Technical
Reference Manual
DRV8353Rx-EVM User’s Guide
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