Texas Instruments DRV830x Rev D. Quick Start Manual

DRV830x Rev D. Hardware Quick Start Guide

Version 1.0.5 Motor Solutions

Fig 1: DRV830x EVM with controlCARD

Abstract

The Low Voltage, High C urrent Motor Drive EV M (DRV8301, F igure 1), provides a gr eat way to
learn and experiment with digital control of sub 60 volt three-phase motors to increase efficienc y
of operation. The bo ard is available in two conf igurations, the DRV8301 or the DRV8302. This
document goes over the typical kit contents and hardw are details, and explains t he functions and
locations of jumpers and connectors present on the board. This document supersedes all the
documents available for the kit.

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Version: 1.0.5

Revision History:

1.0.5 April 23, 2014 Fixed page 18-20 co mm ent s rega r di ng A DC
and IQ CURRENT, VOLTAGE, and pole settings

1.04 January 29, 2014 Changed page 8 regarding GPIO to Enable Pin
connection with TMDSCN C D 28027F

1.03 July 11, 2013 Updated for TMDSCNCD28027F support. See
specific instruction s o n Page 8.

Added section on Optimizing Sense Circuitry

1.0.2 March 21, 2013 Added Revision History

1.0.1 February 26,

2013

First release

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WARNING

This EVM is meant to be operated in a lab environment only and is not
considered by TI to be a finished end-product fit for gene ral consu mer u se

This EVM must be used only by qualified engineers and technicians familiar
with risks associated with handling high voltage electrical and
mechanical components, systems and subsystems.

This equipment operates at voltages and currents that can result in electrical shock, fire
hazard and/or personal injury if not properly handled or applied. Equipment must be used
with necessary caution and appropriate safeguards employed to avoid personal injury or
property damage.

It is the user’s responsibility to confirm that the voltages and isolation requirements are
identified and understood, prior to energizing the board and or simulation. When
energized, the EVM or components connected to the EVM should not be touched.

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Table of Contents

Getting Familiar with the Kit .......................................................................................................... 5

Kit Contents .............................................................................................................................................................................. 5

Board Features: ........................................................................................................................................................................ 5

Warning: about low switching frequencies on the DRV830x .................................................................................................... 5

Hardware Overview ........................................................................................................................ 6

Macro Blocks ............................................................................................................................................................................ 6

Powering the Board ......................................................................................................................... 8

Hardware Resource Mapping .......................................................................................................... 9

Resource Allocation .................................................................................................................................................................. 9

Jumpers and Connectors ........................................................................................................................................................ 11

Optimizing Sense Circuitry ........................................................................................................... 16

Overview ................................................................................................................................................................................. 16

Shunt Current Feedback ......................................................................................................................................................... 17

Phase Voltage Feedback ........................................................................................................................................................ 18

Phase Voltage Filter Feedback ............................................................................................................................................... 20

SCHEMATIC DISCLAIMER AND WARNINGS ...................................................................... 22

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Getting Familiar with the Kit

Kit Contents

The DRV830x EVM is usually available packaged as a full solution kit:

• MCU controlCARD

• DRV830x EVM board with slot for the controlCARD

• USB Cable

• USB/DVD with CCStudio IDE, GUI, documentation, and link to project software

distribution

• Some versions ship with a tabl etop 24V 2.5A power supply and 24V M otor with built-in
Hall Sensors and Encoder

The DRV830x EVM board can accept m any of the TI MCU controlCARDs, but we r ecommend
using the versions that ship with the kits that include the JTAG emulator, USB to serial, and
isolation on the controlCARD. It is recommended to always check for any updates to the GUI
executable and MCU program.

Board Features

:

The board has the following features

• Three-Phase Pow er Stage, DRV830x capable of driving 3-phase brushless DC motors
and Permanent Magnet Synchronous Motors.

o 60V DC max input voltage
o 60A peak output current per phase
o Up to 200khz driver switching frequency
o Integrated 1A buck converter to provide logic and analog power
o Dual integrated current sense amplifiers

• Isolated CAN and SPI communication (will only work if MCU supports and SW is
enabled)

• JTAG connector for external emulators

• Quadrature Encoder Interfa ce and Hall Sensor Interface availab le for speed and pos ition

measurement (only if MCU supports and SW is enabled)

• High precision low-side cur rent sensing using integrated curr ent sense amplifiers in the
DRV830x (2-ch) or optional external 3-ch (Starting with DRV8301 RevD)

• Over current protection on the inverter stage by DRV830x

• Hardware Developer’s Package that includes schematics and bill of materials

• Closed-loop digital control with feedback using the MCU’s on-chip PWM and ADC

peripherals

Warning: about low switching frequencies on the DRV830x

When the DRV830x runs at a low switching frequency (e.g. less than 20 kHz with 100 nF
bootstrap capacitor), the bootstrap capacitor voltage might not be able to maintain a proper

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voltage level for the high-side gate driver. A bootstrap capacitor under voltage protection circuit
(BST_UVP) will start under this circumstance to prevent the potential failure of the high-side
MOSFET. In this circumstance, both the FAULT and OTW pins should pull low and the device
should self-protect itself. The motor’s inductance and the inverter’s bootstrap cap ac itance will
allow the DRV830x to run efficiently until approximately 10 kHz (with margin). Setting the PWM
switching frequency below 10 kHz may cause issues on the inverter output and is not
recommended. Please reference the datasheet.

Hardware Overview

The example projects made available wit h th e kit may be done with a s up pl ied 24V power suppl y,
but many of the examples will work with an externally supplied laboratory power supply of a
different voltage or current limit. The DRV830x EVM has all the power and control blocks that
constitute a typical m otor drive system for a three-phase system : Communications + Control +
Feedback + Feedforward + Drive

Macro Blocks

The motor control board is separated into function al groups that enable a com plete motor drive
system, these are ref erred to as m acro blocks . Following is a list of the mac ro blocks pr esent on
the board and their functions:

• controlCARD socket – Socket for a controlCARD (preferably using built-in em ulation) .

• DC Bus Connection

o “PVDD/GND” Terminals – Connect an external 8-60V DC lab supply here

making sure to observe correct polarity..

• DRV830x – This module includes either the DRV8301 or DRV8302 Three Phase Pre-
Driver as well as all of the necessary external passive components.

• Current Sense – Low-side shunt current sensing on each half-bridge.

• Quadrature Encoder Connections – Connections are available for an optional shaft

encoder to interface to the MCU’s QEP peripheral.

• Hall Effect Sensor Connections – Connections are available for optional Hall Effect
Sensors.

Fig 2, illustrates the position of these macro blocks on the board. The use of a macro block
approach, for different po wer stages enables easy debug an d testing of one stage at a time. All
the PWM’s and ADC signals which are the actuation and sense signals have designated test
points on the board , which makes it eas y for an application d eveloper to try out new algorithms
and strategies.

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Fig2: DRV830x-EVM Board Macros

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Powering the Board

The board is separated int o two power domains*, the low volt age Controller Power domain that
powers the controller and t he logic circuit present on the board, and the medium voltage power
delivery line that is used to carry the medium voltage and current like the DC power for the
Inverter also referred to as DC Bus.

1) Controller Power comprises of the 5 V and 3.3V that t he board uses to power the controller
and the logic and sensi ng circuit present o n the board. This power is regulat ed from the DC bus
by the DRV830x integrated buck converter.

2) DC Bus Power is the medium voltage line – up to 60V - that provides the voltage to the
inverter stage to generate 3 phases to control the motor

Note: Do not apply power to board before you have verified these settings!

The kit ships with the control card inserted and the jumper and switch settings pre done
for connecting with the GUI. However the user must ensure that these settings are valid
on the board.

1. Make sure nothing is connected to the board, and no power is being supplied to
the board.

2. Insert the controlCARD into the connector if not already populated.

Special Notes Regarding controlCARD Use

• Make sure switches are set properly on the controlCARD according to the
appropriate qsg_hw_cncd280xxx.pdf

• Special notes for using controlCARDs with this motor drive board

o When using TMDSCNCD28027F

 Connect pin 2 of J12 (GPIO-29) to pin 6 of J5 (EN_GATE).
 Note, for all MotorWare versions up to _11 this was pin1 of

J11. Changed in _12 due to pin conflict.

3. Make sure the following jumpers & connector settings are valid i.e.
a. JP2 is installed

4. Connect your PC to the kit
a. controlCARDs with on-card XDS100 USB-JTAG:

i. connect USB cable from computer to USB connector on control

card

b. controlCARDs without on-card USB -JTAG

i. connect USB cable from comput er to external emulator, and

emulator to 14-pin JTAG header (J21)

5. Connect the motor you want to spin to the “MOTOR” terminal block as shown

below. The order is not important unless a rotor sensor is used. If ground is
available with your motor it should also be used.

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