Texas Instruments BQ76922EVM, User Manual, Page: 4 / 38

2 BQ76922EVM Quick Start Guide
2.1 Before You Begin
The following warnings and cautions are noted for the safety of anyone using or working close to the BQ76922
EVM. Observe all safety precautions.
CAUTION
The default settings of the BQ76922 do not limit performance to the ratings of the EVM. Set all
protections appropriately and limit current for safe operation.
CAUTION
The circuit module has signal traces, components, and component leads on the top and bottom of
the board. This may result in exposed voltages, hot surfaces or sharp edges. Do not reach under the
board during operation. Do not leave the EVM powered when unattended.
CAUTION
The circuit module may be damaged by over temperature. To avoid damage, monitor the
temperature during evaluation and provide cooling, as needed, for your system environment.
CAUTION
Some power supplies can be damaged by application of external voltages. If using more than
1 power supply, check your equipment requirements and use blocking diodes or other isolation
techniques, as needed, to prevent damage to your equipment.
CAUTION
The communication interface is not isolated on the EVM. Be sure no ground potential exists between
the computer and the EVM. Also be aware that the computer is referenced to the PACK- potential of
the EVM.
CAUTION
Connections for rated current must be made at the terminal block. Test points are not rated for the
board current.
2.2 Quick Start
The BQ76922 registers must be configured to enable most protections, select the monitored cells, and enable
the protection FETs on the EVM. This quick start section does not describe current protection settings. Once
registers are configured, the values may be written to One Time Programmable memory (OTP) for use on
the next reset of the device, but since that is a permanent change it is not part of this quick start procedure.
Preproduction sample configuration may differ from the production data sheet, check the documents provided
with the samples. This quick start assumes a new EVM without OTP configuration settings. If your board has a
part with configuration stored in OTP refer to the
Section 4 and Section 5 .
These steps describe quick connection of the BQ76922 EVM to demonstrate operation of the AFE portion of the
EVM. For more detailed descriptions, refer to other sections of the user guide.
Refer to Figure 2-1 for the following steps.
1. Download the BQSTUDIO Software from the tool folder link www.ti.com/tool/BQSTUDIO or search from
www.ti.com .
2. Install the BQStudio software (see Section 4.2 ).
BQ76922EVM Quick Start Guide www.ti.com
4 BQ76922EVM Evaluation Module SLVU957A – SEPTEMBER 2019 – REVISED NOVEMBER 2021
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