Texas Instruments BQ24351EVM General Description, EVM Features, I/O Description, Jack Description

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1 Introduction

1.1General 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).

1.2EVM 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

1.3I/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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