Introduction
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1
Introduction
1.1
General Description
The bq24351 evaluation module (EVM) is a complete charger module for evaluating a charger front-end
protection and charger solution using the bq24351 and bq2057C devices. It is designed to deliver up to
560 mA of charge current to Li-ion or Li-polymer applications. The charger front-end protection current is
designed to 1.2 A.
The bq24351 protects the charging system against three types of failures: input overvoltage when the ac
adapter fails to regulate its voltage, load overcurrent when failures such as a short circuit occur in the
charging system, and battery overcharge.
For details, see the bq24351 data sheet (
SLUSA62
).
1.2
EVM Features
•
Evaluation module for bq24351 DSG
•
Evaluation module for bq2057C charger integrated circuit (IC)
•
Input operating range for bq24351 4.5 V–26 V
•
Input overvoltage protection.
•
Input overcurrent protection.
•
Battery overvoltage protection.
•
LED indication for status signals.
•
Test points for key signals available for testing purposes. Easy probe hook-up
•
Jumpers available. Easy to change connections
1.3
I/O Description
Jack
Description
J1–DC+
AC adapter, positive output
J1–DC–
AC adapter, negative output, ground
J2–FAULT
Reserved for other ICs
J2–VBAT
bq24351 VBAT pin
J2–GATDRV
bq24351 GATDRV pin
J2–CHGIN
bq24351 CHGIN pin
J3–BATEN
Reserved for ohter ICs
J3–OUT
bq24351 OUT pin
J3–BAT+
Battery positive output
J3–GND
Ground
J4–BAT+
Connect to battery positive output
J4–BAT–
Connect to battery negative output, ground
2
bq24351EVM for Li-Ion Charger Front-End Protection IC
SLUU455 – October 2010
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