Texas Instruments DRV8329AEVM User manual

User’s Guide
DRV8329AEVM User’s Guide
ABSTRACT
This document is provided with the DRV8329 customer evaluation module (EVM) as a supplement to the
DRV8329 data sheet (DRV8329 4.5-V to 60-V 1000/2000mA 3-phase gate driver). This User's Guide details the
implementation of the EVM and shows how to set up and power the board.
Note
The DRV8329AEVM comes automatically populated with and configured for the DRV8329A. It is also
compatible for the DRV8329B variants (see Section 4.4.1), but the user will need to replace the
DRV8329A with the DRV8329B for compatibility.
Table of Contents
1 Cautions and Warnings..........................................................................................................................................................3
2 Introduction.............................................................................................................................................................................4
3 Quick Start Guide....................................................................................................................................................................6
4 Hardware and Software Overview.........................................................................................................................................7
4.1 Hardware Connections Overview – DRV8329AEVM + LAUNCHXL-F280049C................................................................7
4.2 Connection Details............................................................................................................................................................. 7
4.3 LED Lights........................................................................................................................................................................10
4.4 DRV8329AEVM Configurability Switch Functions............................................................................................................11
4.5 Interfacing DRV8329AEVM and LAUNCHXL-F280049C LaunchPad............................................................................. 12
5 Hardware Setup.................................................................................................................................................................... 15
6 Firmware and GUI Application.............................................................................................................................................16
6.1 Connecting to the DRV8329AEVM-GUI...........................................................................................................................16
6.2 DRV8329x EVM GUI Quick Start Guide.......................................................................................................................... 17
6.3 Using the DRV8329AEVM-GUI........................................................................................................................................17
7 Schematics............................................................................................................................................................................19
7.1 DRV8329A/B....................................................................................................................................................................19
7.2 Status LEDs..................................................................................................................................................................... 19
7.3 LaunchPad Connectors and Connections........................................................................................................................20
7.4 Power Stage and MOSFETs............................................................................................................................................ 20
7.5 Main Supply Input............................................................................................................................................................ 21
7.6 Hall Sensor and Hall Power selection.............................................................................................................................. 21
7.7 Connectors, Selectors, and Analog Control Interface...................................................................................................... 22
7.8 Dead Time and CSA Gain Selection................................................................................................................................22
7.9 Voltage Sense and Protection..........................................................................................................................................23
List of Figures
Figure 2-1. DRV8329AEVM PCB Layout.....................................................................................................................................5
Figure 4-1. Major hardware blocks of the DRV8329AEVM..........................................................................................................7
Figure 4-2. Connections from motor to DRV8329AEVM............................................................................................................. 8
Figure 4-3. DRV8329AEVM on headers J1/J3 and J2/J4 of LaunchPad.................................................................................... 9
Figure 4-4. Micro-USB plugged into LaunchPad......................................................................................................................... 9
Figure 4-5. DRV8329AEVM LEDs.............................................................................................................................................10
Figure 4-6. User-adjustable jumpers, resistors, and switches on DRV8329AEVM................................................................... 12
Figure 6-1. DRV8329A_EVM_GUI and DRV8329B_EVM_GUI on the Gallery.........................................................................16
Figure 6-2. Hardware connected message................................................................................................................................16
Figure 6-3. DRV8329A_EVM_GUI defaults when connected....................................................................................................17
Figure 7-1. DRV8329A/B schematic..........................................................................................................................................19
Figure 7-2. Status LEDs schematic........................................................................................................................................... 19
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Figure 7-3. LaunchPad connectors schematic.......................................................................................................................... 20
Figure 7-4. LaunchPad connections schematic.........................................................................................................................20
Figure 7-5. Powerstage and MOSFETs schematic....................................................................................................................20
Figure 7-6. Main supply input schematic................................................................................................................................... 21
Figure 7-7. Hall Sensor and Hall Power selection schematic.................................................................................................... 21
Figure 7-8. Connectors, Selectors, and Analog Control Interface schematic............................................................................ 22
Figure 7-9. Dead time and CSA gain selection schematic........................................................................................................ 22
Figure 7-10. Voltage Sense and Protection schematic..............................................................................................................23
List of Tables
Table 2-1. DRV8329 device variant names and descriptions (default of EVM in bold)................................................................4
Table 4-1. Description of DRV8329AEVM LEDs (on during power up in bold)..........................................................................10
Table 4-2. User-Selectable Jumpers..........................................................................................................................................11
Table 4-3. Connections for Header J1 on DRV8329AEVM (DNP in bold)................................................................................. 12
Table 4-4. Connections for Header J2 on DRV8329AEVM........................................................................................................13
Table 6-1. DRV8329x EVM GUIs available................................................................................................................................16
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.
CAUTION:
!
Read the User's Guide before use.
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 DRV8329 is a 4.5-V to 60-V triple half-bridge gate driver IC for motor drive applications. It provides a
bootstrap architecture to drive 3 high-side and 3 low-side N-channel MOSFETs with up to 1-A peak source
and 2-A peak sink current and can support up to 100% PWM duty cycle inputs with a trickle charge pump. All
variants are in compact QFN packages with hardware configurations and provide ultra-low sleep mode current.
Additionally, variants offer a variety of optional features including a dead time pin, overcurrent level pin, driver
shutoff pin, and integrated LDO capable of driving 3.3 V and 80 mA. A summary of the variants below can be
seen in Table 2-1.
Table 2-1. DRV8329 device variant names and descriptions (default of EVM in bold)
Device Name LDO Output DRVOFF pin DT pin and VDSLVL pin PWM_MODE
DRV8329A 3.3 V Yes Available 6x
DRV8329B 3.3 V Yes Available 3x
The DRV8329AEVM can be interfaced with the TMS320F280049C microcontroller on the LAUNCHXL-
F280049C LaunchPad in correspondence with the reference software to provide the algorithm to the DRV8329
to control the BLDC motor.
This document serves as a startup guide to supplement the DRV8329AEVM + 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 DRV8329. For step by step details on connecting the LAUNCHXL-
F280049C + DRV8329AEVM, refer to Hardware Setup.
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Figure 2-1. DRV8329AEVM PCB Layout
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3 Quick Start Guide
The DRV8329AEVM requires a power supply with a recommended operating range from 4.5-V to 60-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 J10 and the power supply
positive terminal to the PVDD pin of J10. Ensure jumpers JP1, JP2, and JP3 of the LAUNCHXL-F280049C
are not populated (DNP) to ensure that the LaunchPad is powered by the DRV8329AEVM and the motor
supply is isolated from the USB.
2. Connect the motor phases to OUTA, OUTB, and OUTC in the correct order to connector J13. For sensored
applications, connect the Hall sensors to the appropriate locations on the 5-pin connector J11 as shown in
Figure 4-2. Select AVDD or EXT on jumper J11 to choose the Hall power source voltage.
3. Mate the DRV8329AEVM 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. Place nSLEEP switch in WAKE position and DRVOFF in ON position.
5. Power on the DRV8329AEVM.
6. Connect a Micro-USB cable from the computer into the Micro USB connector on the top of the LAUNCHXL-
F280049C as shown in Figure 4-4.
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4 Hardware and Software Overview
4.1 Hardware Connections Overview – DRV8329AEVM + LAUNCHXL-F280049C
Figure 4-1 shows the major hardware blocks of the DRV8329AEVM. The DRV8329AEVM is designed for an
input supply from 4.5-V to 60-V.
Figure 4-1. Major hardware blocks of the DRV8329AEVM
4.2 Connection Details
Figure 4-2 shows the power supply and motor connections made to the DRV8329AEVM in order to spin a
3-phase sensored or sensorless Brushless-DC motor.
A 4.5-V to 60-V power supply or battery is connected to the PVDD and GND terminals. The three phases of the
BLDC motor connect directly to the OUTA, OUTB, and OUTC terminals of the screw terminal J13 provided on
the DRV8329AEVM.
For sensored applications, to connect the Hall sensor outputs to the Hall connectors on the DRV8329AEVM,
push down on the respective terminals to open the sockets and insert the Hall sensor wires into connector J11.
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Figure 4-2. Connections from motor to DRV8329AEVM
Figure 4-3 and Figure 4-4 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
DRV8329AEVM to the J1/J3 and J2/J4 headers of the LaunchPad.
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Figure 4-3. DRV8329AEVM on headers J1/J3 and J2/J4 of LaunchPad
Figure 4-4. Micro-USB plugged into LaunchPad
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4.3 LED Lights
There are LED indicators on both the LAUNCHXL-F280049C and DRV8329AEVM when power is provided and
the micro USB cable is plugged in to the LaunchPad.
The DRV8329AEVM has 4 status LEDs on the board. By default, the PVDD and AVDD 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 4-5 shows the LED locations on the EVM. These LEDs all have
removable jumpers to reduce power consumed by the EVM.
Table 4-1. Description of DRV8329AEVM LEDs (on during power up in bold)
Designator Jumper Name Color Description
D1 J1 AVDD Green AVDD is outputting 3.3 V
D2 J2 nFAULT Red Lights up when fault
condition has occurred on
DRV8329
D3 J3 PVDD Green Power is supplied to the
board
D4 J4 MCU_LED Orange MCU debugging
Figure 4-5. DRV8329AEVM LEDs
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4.4 DRV8329AEVM Configurability Switch Functions
The DRV8329AEVM includes a variety of user-selectable jumpers and unpopulated components on the PCB to
choose user settings and evaluate the DRV8329A, DRV8329B, DRV8329C, or DRV8329D 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 4-6.
Table 4-2. User-Selectable Jumpers
Id. Setting Name Description Position Function
A nSLEEP switch Places DRV8329 in sleep
mode
S2 = Left Sleep mode
S2 = Right Operating mode
B Dead time potentiometer,
jumper, & resistor
Jumper to enable
dead time control
from potentiometer and
potentiometer used to set
the resistance for DT pin.
J1 = Populated DT from pot is enabled
J1 = DNP DT from pot is disabled
R1 (CW = more DT, CCW
= less DT)
Sets dead time of gate
driver outputs
R2 Fixed resistor for DT pin
C CSA input filter Input filter to filter
any Vsense switching
transients at the current
sense amplifier inputs.
R45 = R43 = 0 ohm C30,
C31, C32 = DNP
CSA input filtering
D Power stage MOSFETs
and passive components
Optional passive
components for tuning
power stage, i.e. series
gate resistors, RC
snubbers, PVDD-GND
capacitors, PVDD-LSS
capacitors
R28, R29, R30, R34, R35,
R36 = 10 ohm
Series gate resistors
(GHA, GHB, GHC, GLA,
GLB, GLC)
R25/C12, R26/C13, R27/
C14, R40/C26, R41/C24,
R42/C25 = DNP
RC snubbers
(HS FET A, HS FET B, HS
FET C, LS FET A, LS FET
B, LS FET C)
C18, C20, C44 = 2.2uF PVDD-VDRAIN bypass
capacitor
C21, C22, C23 = 0.01uF PVDD-LSS bypass
capacitors
G CSA gain select Selects the gain setting of
the integrated CSA in V/V.
J2 = GND CSAGAIN = 5 V/V
J2 = 50 k CSAGAIN = 10 V/V
J2 = 200 k CSAGAIN = 20 V/V
J2 = DNP CSAGAIN = 40 V/V
H HALL_PWR select Use J6 to supply Hall
power from AVDD or
external hall power.
J11 = AVDD Supplies AVDD to Hall
power
J11 = EXT Supply external hall power
from EXT HALL POWER
test point.
J VDSLVL potentiometer,
select and disable jumpers
Potentiometer to set
VDSLVL between 0.1  2.5
V, VDSLVL_SEL to select
voltage source, disable
jumper to disable VDSLVL
J16 = POT VDSLVL set from
potentiometer
J16 = EXT VDSLVL set from VDS
EXT test point
J15 = Populated VDSLVL is disabled (100
kΩ to GVDD)
J15 = DNP VDSLVL is enabled
R74 (CCW = higher
VDSLVL, CW = lower
VDSLVL)
Sets VDSLVL from 0.1 V 
2.5 V
K CSAREF select Jumper to select CSA
reference voltage from
AVDD or an external
reference source.
J14 = AVDD CSAREF = AVDD
J14 = EXT CSAREF = CSAREF EXT
test point
L Speed pot Sets speed of the motor
when potentiometer is
enabled in the GUI.
R73 (CW = less speed,
CCW = more speed)
Sets duty cycle from 0%
to 100%.
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Table 4-2. User-Selectable Jumpers (continued)
Id. Setting Name Description Position Function
M External CSA output filter RC output filter to
suppress high frequency
transients of CSA output
from current shunt.
R59 = 330 ohms, C31 =
470 pF
Fc ~10 MHz
N DRVOFF switch Turns off the gate driver
outputs.
S2 = Down Drivers are on
S2 = Up Drivers are off (DRVOFF
is enabled)
Figure 4-6. User-adjustable jumpers, resistors, and switches on DRV8329AEVM
4.4.1 DRV8329A/B Compatibility
The DRV8329AEVM default is the DRV8329A (Hardware variant), but can also be compatible with the
DRV8329B. The main difference is that DRV8329A operates in 6x PWM mode and DRV8329B operates in
3x PWM mode. To use the DRV8329B, remove the DRV8329A from the EVM and replace with the DRV8329B.
No extra hardware changes are required for 3x PWM operation.
4.5 Interfacing DRV8329AEVM and LAUNCHXL-F280049C LaunchPad
The DRV8329AEVM has 40 pins with different functions. These pins are interfaced with the LAUNCHXL-
F280049C LaunchPad development kit and are mapped appropriately to receive the functionalities of the
DRV8329 device. These 40 pins are grouped into 4 ports in respect to the LAUNCHXL-F280049C (J1 to J4).
Table 4-3 and Table 4-4 list the interfacing of these ports of the DRV8329AEVM headers J3 and J4.
Table 4-3. Connections for Header J1 on DRV8329AEVM (DNP in bold)
J3 Pin Number DRV8329AEVM Function LAUNCHXL-F280049C Function Description
1AVDD (DNP) +3.3 V 3.3 V LaunchPad Supply
2 +5 V +5 V 5 V LaunchPad Supply
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Table 4-3. Connections for Header J1 on DRV8329AEVM (DNP in bold) (continued)
J3 Pin Number DRV8329AEVM Function LAUNCHXL-F280049C Function Description
3 POT_MCU/NC_49C PGA1/3/5_GND Not used
4 GND GND GND connection
5 Not used GPIO13/SCIBRX Not used
6 VSENA ADCINA5 Phase A Voltage Sense
7 Not used GPIO40/SCIBTX Not used
8 VSENB ADCINB0 Phase B Voltage Sense
9nSLEEP_DFLT NC nSLEEP for internal use only.
10 VSENC ADCINC2 Phase C Voltage Sense
11 CTAP ADCINB3/VDAC Center tap voltage sense.
12 VSENPVDD ADCINB1 PVDD Bus Voltage Sense
13 Not used SPIACLK Not used
14 NC_MCU/POT_49C ADCINB2 General Purpose pot for MCU
(R90)
15 nFAULT_DFLT ADCINC4 nFAULT for internal use only.
16 ISENA ADCINC0 LSS current sense
17 Not used GPIO37 Not used
18 Not used ADCINA9 Not used
19 Not used GPIO35 Not used
20 VDSLVL/C_TAP ADCINA1/DACB_OUT VDSLVL from DAC. C_TAP for
internal use only.
Table 4-4. Connections for Header J2 on DRV8329AEVM
J4 Pin Number DRV8329AEVM Function LAUNCHXL-F280049C Function Description
1 INHA GPIO10/PWM6A PWM used to switch Phase A
High-side FET
2 GND GND GND connection
3 INLA GPIO11/PWM6B PWM used to switch Phase A
Low-side FET
4 MCU_LED SPIASTE Visual feedback for LaunchPad
connection.
5 INHB GPIO8/PWM5A PWM used to switch Phase B
High-side FET
6nFAULT_DFLT NC nFAULT for internal use only.
7 INLB GPIO9/PWM5B PWM used to switch Phase B
Low-side FET
8 Not used NC Not used
9 INHC GPIO4/PWM3A PWM used to switch Phase C
High-side FET
10 Not used XRSn Not used
11 INLC GPIO5/PWM3B PWM used to switch Phase C
Low-side FET
12 Not used SPIASIMO Not used
13 HALLA GPIO58 Hall sensor A from motor
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Table 4-4. Connections for Header J2 on DRV8329AEVM (continued)
J4 Pin Number DRV8329AEVM Function LAUNCHXL-F280049C Function Description
14 Not used SPIASOMI Not used
15 nSLEEP_49C GPIO30 nSLEEP signal (active low)
16 DRVOFF GPIO39 Active-high output to disable gate
drivers
17 Not used GPIO18*/XCLKOUT Not used
18 HALLB GPIO23/LED4 Hall sensor B from motor
19 nFAULT_49C/CSAREF GPIO25 nFAULT signal (active low)
20 HALLC GPIO59 Hall sensor C from motor
Note
There are many resistors that are not populated for internal use only. Ensure the correct resistors are
populated so every has signal has only signal path. If multiple signal paths are present, or no signal
path is present, the device may not work as intended.
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5 Hardware Setup
The hardware required to run the motor control is the LAUNCHXL-F280049C LaunchPad development kit, the
DRV8329AEVM, a Micro-USB cable, and a power supply with a DC output from 4.5-V to 60-V. Follow these
steps to set up the evaluation module:
1. Ensure all resistors, jumpers, and switches are set up accordingly.
2. Mate the DRV8329AEVM 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). Observe the correct orientation when
placing DRV8329AEVM 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 J12 on DRV8329AEVM.
Phases OUTA, OUTB, and OUTC are labeled in white silkscreen on the PCB top layer. If using a sensored
algorithm on the LaunchPad development kit, connect Hall sensors to the 5-pin connector J10.
4. Connect the DC power supply to header J9. Observe the correct polarity PVDD and GND connections on
the DRV8329AEVM connector J9.
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 DRV8329AEVM 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 DRV8329AEVM can implement sensored, sensorless, or Field-oriented control for commutating a 3-phase
Brushless-DC motor. There are two GUIs to support DRV8329A (DRV8329A-EVM-GUI) and DRV8329B
(DRV8329B-EVM-GUI) using sensored trapezoidal commutation with Hall sensor feedback. The GUIs allow
for basic trapezoidal motor control functions such as acceleration, duty cycle control, PWM switching frequency,
MCU dead time insertion, braking, and direction changes. The bus and phase voltage feedback circuits as well
as the integrated CSA provide voltage and current feedback from the motor for over-current and motor voltage
protection.
The following GUIs are available on the Gallery:
Table 6-1. DRV8329x EVM GUIs available
Variant GUI
DRV8329A https://dev.ti.com/gallery/view/BLDC/DRV8329A_EVM_GUI/ver/
1.0.0/
DRV8329B https://dev.ti.com/gallery/view/BLDC/DRV8329B_EVM_GUI/ver/
1.0.0/
6.1 Connecting to the DRV8329AEVM-GUI
Follow the instructions in Section 5 and ensure the LAUNCHXL-F280049C is connected to the PC. Turned on
the supply to power the DRV8329AEVM and LAUNCHXL-F280049C.
Access the Gallery and search for "DRV8329" as shown in Figure 6-1. Click on the GUI for the variant.
Figure 6-1. DRV8329A_EVM_GUI and DRV8329B_EVM_GUI on the Gallery
Accept the readme that appears. The GUI will detect the LAUNCHXL-F280049C and automatically download the
program into the MCU. Once complete, the “Hardware Connected” message appears at the bottom left hand
corner as shown in Figure 6-2.
Figure 6-2. Hardware connected message
The following defaults should appear as shown in Figure 6-3 when the GUI is connected:
Direction – Enabled
PWM Frequency (Hz) – 20000
MCU Dead Time (ns) – 0
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Acceleration Delay (ms/1% duty cycle) – 50
Figure 6-3. DRV8329A_EVM_GUI defaults when connected
6.2 DRV8329x EVM GUI Quick Start Guide
1. Click on the “Output Enable” switch.
2. Enter the PWM frequency in Hz using the “PWM Frequency (Hz)” text box. Press Enter.
3. Adjust the MCU dead time and Acceleration Delay values. You may also use the DT potentiometer to
insert dead time from the DRV8329 rather than the MCU by setting the dead time potentiometer resistance,
enabling the DT_POT jumper, and setting the MCU dead time to 0 ns.
4. To control the motor speed using the speed potentiometer, turn the potentiometer all the way
counterclockwise to set to 0% speed. Click on the “Potentiometer Enable” switch. To not use the
potentiometer to control the motor speed, skip this step.
5. Adjust the “Duty Cycle” slider or enter the duty cycle in the number box to control the speed of the motor
from 0% to 100%.
6. Use the “Direction” switch to switch the direction of the motor.
7. Use the drop-down menu in “Motor Braking” to determine the motor braking type. Click on “Stop Motor” to
stop the method with the selected braking type.
8. If R58 is populated and R11 is not populated, use the nSLEEP switch to put the driver into a low-power sleep
mode.
9. If R69 is populated, use the DRVOFF switch to shut off the gate drivers and Hi-Z the gate driver outputs.
6.3 Using the DRV8329AEVM-GUI
The GUI offers the following features:
MOTOR CONTROL SETTINGS
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Output Enable – Global enable flag to run the motor at the selected duty cycle.
Potentiometer Enable – Enables potentiometer R90 to control the duty cycle of the motor. Duty cycle is
updated in the Duty Cycle slider in real time. Turn all the way clockwise for 0% duty cycle, all the way
counterclockwise for 100% duty cycle.
Direction – Sets direction of the motor. When enabled, motor spins counterclockwise. When disabled, motor
spins clockwise. When the direction is changed, the motor will coast to a stop, wait 1 second, then accelerate to
the duty cycle in the opposite direction.
nSLEEP – Places the DRV8329 in a low-power sleep mode. nSLEEP toggle switch only works when resistor
R26 is populated and resistor R75 is DNP.
DRVOFF – Disables all gate drivers in Hi-Z state.
PWM Frequency – Sets the PWM switching frequency of the motor in Hz.
MCU Dead Time – Sets the MCU deadband time for the PWM inputs in nanoseconds.
Duty Cycle – Sets the duty cycle of the motor when potentiometer is disabled.
Acceleration Delay – Sets the acceleration and deceleration ramp rate in ms per 1% duty cycle.
MOTOR BRAKING SETTINGS
Stop Motor – Stops the motor when toggled according to the braking method in the drop-down menu. The two
methods are brake (turn on all low-side MOSFETs) and coast (float all MOSFETs).
CSA SETTINGS
Over-current Limit – Sets the overcurrent limit in amps. If ISEN is measured to be over the overcurrent limit,
Over-Current fault is triggered.
Current Sense Resistor – Sets the resistor value in ohms for the shunt resistor onboard the EVM. Default
resistor populated is 0.001 ohm.
CSA Gain – Gain of the integrated CSA on the EVM. Set the CSA gain setting to match the CSAGAIN setting on
J2 of the EVM so the firmware can calculate the ISEN current correctly.
FAULT STATUS BITS
Fault Status – Logical “or” of all faults. When a fault occurs, Output Enable is turned off, Duty Cycle is set to 0%,
and the corresponding fault status LED is lit.
PVDD Overvoltage Fault – PVDD is over 60 V. Configurable through firmware.
PVDD Undervoltage Fault – PVDD is under 4.5 V. Configurable through firmware.
Over-Current – Measured LSS current is over the Over-Current threshold.
DRV8329 Fault – Fault indicated by the DRV8329. See DRV8329 datasheet.
Firmware and GUI Application www.ti.com
18 DRV8329AEVM User’s Guide SLVUCF5 – MARCH 2022
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7 Schematics
7.1 DRV8329A/B
Figure 7-1. DRV8329A/B schematic
7.2 Status LEDs
Figure 7-2. Status LEDs schematic
www.ti.com Schematics
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DRV8329AEVM User’s Guide 19
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7.3 LaunchPad Connectors and Connections
Figure 7-3. LaunchPad connectors schematic
Figure 7-4. LaunchPad connections schematic
7.4 Power Stage and MOSFETs
Figure 7-5. Powerstage and MOSFETs schematic
Schematics www.ti.com
20 DRV8329AEVM User’s Guide SLVUCF5 – MARCH 2022
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