BQ79606EVM Quick Start Guide
12
SLOU471E – May 2017 – Revised April 2019
Copyright © 2017–2019, Texas Instruments Incorporated
BQ79606A-Q1 Evaluation Module
This section includes hardware setup instructions, connection procedures, and software and GUI
instructions.
4.1
Required Devices
The system is implemented using the TMS570LS04 LaunchPad™ board (TMS570LS0432 MCU) and the
BQ79606EVM.
The part numbers of the evaluation modules are LAUNCHXL-TMS57004 and BQ79606EVM. These
boards are available from the TI eStore (
) or from your local TI sales representative.
For more details and information related to the LaunchPad modules, see the specific module user's guide.
4.1.1
LaunchPad Required Modification
To allow use of the SCI1 UART pin on the LaunchPad with the BQ79606EVM, remove resistor R8.
4.2
Power Connections
If powering the BQ79606EVM using the included resistor ladder as cells, simply ensure that the power
supply positive terminal is connected to the "VSTACK" or "PWR" testpoints provided on the board, and the
power supply negative terminal is connected to the "GND" or "Cell0" testpoints provided on the board, or
any "GND" standoff provided.
If not using the resistor ladder, the power supply positive terminal must be connected to the "PWR"
testpoint, and the power supply negative terminal must be connected to the "Cell0" testpoint.
Also ensure that headers J2 and J3 are both jumpered, to allow for power and ground to be supplied from
the "battery stack" (resistor ladder).
4.2.1
On-Board Resistor Ladder - Power Supply
The BQ79606EVM utilizes an on-board resistor ladder to simplify the evaluation process. Each of the six
resistors is nominally 1 k
Ω
, resulting in roughly one-sixth of the module voltage at each cell connection. By
default, all actuators of SW2 are positioned closest to the IC, which is the "off" or "open" state. In this
state, none of the resistors are connected to the BQ79606A sense and balance connections.
To simulate connected cells to the sense and balance connections (using a power supply), all switch
actuators on SW2 must be moved towards the module connector J1. Moving the actuators in this manner
connects the BQ79606A to the resistor ladder, and allows for simulated cell measurements.
4.2.2
On-Board Resistor Ladder - Using Actual Battery Cells
When using actual battery cells, disconnect the resistor ladder by moving all switch actuators on SW2 to
the "OFF" position (away from J1).
4.3
Connecting the BQ79606EVM to TMS570 LaunchPad
The EVMs are connected using a standard wire jumper;
shows the connections between the two
EVMs. By default, the TMS570 LaunchPad is powered by the USB port on the host computer. VIO on the
BQ79606EVM can be powered by 3.3 V or 5 V supplies from the TMS570 (3.3 V used in this example).
Table 11. Connections Between BQ79606EVM and TMS570 LaunchPad
Connection Name
BQ79606EVM
TMS570 LaunchPad
TX
J8 pin 5
J1 pin 3 (SCI1_RX)
RX
J8 pin 4
J1 pin 4 (SCI1_TX)
nWAKE
J8 pin 6
J2 pin 3 (GIOA0)
nFAULT
J8 pin 2
J2 pin 4 (GIOA1)
VIO
J8 pin 3
J1 pin 1 (+3V3)
GND
J8 pin 1
J2 pin 1 (DGND)