bq77905EVM Quick Start Guide
2
SLVUAN2A – May 2016 – Revised July 2016
Copyright © 2016, Texas Instruments Incorporated
bq77905 3-5S Low Power Protector Evaluation Module
2
bq77905EVM Quick Start Guide
This section provides the step-by-step procedures required to use a new EVM and configure it for
operation in a laboratory environment.
2.1
Before You Begin
The following warnings and cautions are noted for the safety of anyone using or working close to the
bq77905 EVM. Observe all safety precautions.
CAUTION
The circuit module has signal traces and component leads on the 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 operate the EVM on a
conductive surface.
CAUTION
The circuit module may be damaged by overtemperature. 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 one power supply, check your equipment requirements and
use blocking diodes or other isolation techniques, as needed, to prevent
damage to your equipment.
CAUTION
The circuit module is not a finished product or electrical appliance. It must be
used by qualified personnel with additional equipment for evaluation only. Do
not leave EVM powered when unattended.
2.2
Items Needed for EVM Quick Start Evaluation
•
A bq77905 circuit module
•
An adjustable DC power supply that can provide 10 V to 23 V and 1 A minimum (a voltage range,
bipolar operation, and constant current – constant voltage capability is desirable)
•
Five resistors for cell voltage simulation such as 200
Ω
1% 1/4-W or other suitable value
•
A load such as a 5-k
Ω
, 1/4-W or other suitable resistor
•
A DC meter or measurement instrument
•
Some suitable cables for connection
2.3
EVM Connections
This section covers the hardware connections for the EVM (see