TMS320F28035
3-Phase
Inverter
Plus
Low Side
Current
Sense
DRV8303
Micro-USB Connector
Speed Control
POT
Header for unused pins
DC Power Input
3-phase Motor
Input
XDS100 JTAG
Emulator
QEP Header
HALL Sensor Header
Control Power Supply
SW1
SW2
Switches to
control boot
options
Quick Start GUI
•
Micro-USB connector for serial communication with external PC or laptop to run GUI and download
software to onboard MCU
•
DRV8303 module that includes DRV8303 three-phase pre-driver as well as all of the necessary
external passive components
•
On-board control power supply of 5 V and 3.3 V
•
Current sense, which is a low-side shunt current sensing on each half-bridge
•
Quadrature encoder connections are available for an optional shaft encoder to interface to the QEP
peripheral of the MCU
•
Hall effect sensor connections are available for optional Hall effect sensors
Figure 3. DRV8303EVM Kit Hardware Macro Blocks
4
Quick Start GUI
The InstaSPIN-BLDC GUI provides a convenient way to evaluate the functionality of the DRV8303 and the
F28035 device, without needing to learn and configure the underlying project software, or install Code
Composer Studio (CCS). The interactive interface uses knobs, sliders, buttons, text boxes, and graphs to
enable an easy demonstration of sensor-less trapezoidal commutation of BLDC motors.
4.1
Hardware Setup
The kit ships with switch settings pre-selected for connecting with the GUI. However, the user must ensure
that these settings are valid on the board.
NOTE:
Do not apply power to the board before you have verified these settings.
1. Make sure nothing is connected to the board, and no power is supplied to the board.
2. Make sure that the following switches (SW1 and SW2) are set on the board as follows, to enable boot
from flash and connection to the SCI.
(a) SW1: OFF (down) position
3
SLVU983A – September 2013 – Revised October 2013
DRV8303EVM User Guide
Copyright © 2013, Texas Instruments Incorporated