Texas Instruments BQ24105 Evaluation Module BQ24105EVM BQ24105EVM 데이터 시트
제품 코드
BQ24105EVM
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Introduction
1.1
Background
1.2
Performance Specification Summary
User's Guide
SLUU200A – July 2004 – Revised December 2007
Using the bq241xx (bqSWITCHER™)
This user's guide describes the bq241xxEVM (bqSWITCHER™) Evaluation Module. The Evaluation
Module provides a convenient method for evaluating the performance of a charge management solution
for portable applications using the bq241xx product family. A complete designed and tested charger is
presented. The charger is designed to deliver up to 2.0 A of continuous output current. The charger is
programmed from the factor to deliver 1.33 A of charging current. Follow the instructions in this user's
guide that pertain to the specific bq241xxEVM (one-, two- or three-cell) to be evaluated. See the
bqSWITCHER data sheet (
Module provides a convenient method for evaluating the performance of a charge management solution
for portable applications using the bq241xx product family. A complete designed and tested charger is
presented. The charger is designed to deliver up to 2.0 A of continuous output current. The charger is
programmed from the factor to deliver 1.33 A of charging current. Follow the instructions in this user's
guide that pertain to the specific bq241xxEVM (one-, two- or three-cell) to be evaluated. See the
bqSWITCHER data sheet (
) prior to evaluation for detailed information on the bqSWITCHER
device.
The bqSWITCHER series are highly integrated Li-Ion and Li-Pol switch-mode charge management
devices targeted at a wide range of portable applications. The bqSWITCHER series offer integrated
synchronous PWM Controller and PowerFETs, high-accuracy current and voltage regulation, charge
conditioning, charge status, and charge termination, in a small thermally enhanced QFN package. The
system-controlled version provides additional input for full charge management under system control.
devices targeted at a wide range of portable applications. The bqSWITCHER series offer integrated
synchronous PWM Controller and PowerFETs, high-accuracy current and voltage regulation, charge
conditioning, charge status, and charge termination, in a small thermally enhanced QFN package. The
system-controlled version provides additional input for full charge management under system control.
The bqSWITCHER charges the battery in three phases: conditioning, constant current, and constant
voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge
timer provides a backup safety for charge termination. The bqSWITCHER automatically restarts the
charge if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters
sleep mode when V
voltage. Charge is terminated based on user-selectable minimum current level. A programmable charge
timer provides a backup safety for charge termination. The bqSWITCHER automatically restarts the
charge if the battery voltage falls below an internal threshold. The bqSWITCHER automatically enters
sleep mode when V
CC
supply is removed.
This section summarizes the performance specifications of the EVM.
gives the EVM performance
specifications. The TS pin has been disabled, for easier charging evaluation, by fixing its voltage to a set
value. See the EVM schematic (
value. See the EVM schematic (
) and data sheet (
) for information on how to change
R10 and R11 values to use with an external thermistor
bqSWITCHER is a trademark of Texas Instruments.
SLUU200A – July 2004 – Revised December 2007
Using the bq241xx (bqSWITCHER™)
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