Texas Instruments BQ24351EVM 1.4 Controls and Key Parameters Setting, 1.5 Recommended Operating Conditions, 2 Test Summary 2.1 Definitions, 2.2 Equipment

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Test Summary

1.4 Controls and Key Parameters Setting

Jack (1) Description FactorySetting

JP1 Ifon, high-side sensing resistor is disabled Jumperon

JP2 Reservedfor other ICs Jumper(BATEN, GND) on

JP3 bq24351GATDRV pin Jumper off

JP4 bq2057CBAT pin connection to bq24351 Jumperon

JP5 bq2057CVCC pin connection to bq24351 Jumperon

JP6 bq2057CCC pin connection to bq24351 Jumperon

JP7 Ifon, low-side current-sensing resistor is disabled Jumperoff

(1) ShortJP1, JP4, JP5, and JP6, and disconnect JP7 to use onboard bq2057C as charger; to use external charger to control

bq24351,disconnect JP1, JP4, JP5, and JP6 and short JP7.

1.5 Recommended Operating Conditions

Symbol Description MIN TYP MAX Unit

Supplyvoltage, VIN Input voltage from ac adapter input 4.5 5 26 V

Batteryvoltage, VBAT Voltage applied at VBAT terminal of J4 0 3–4.2 5 V

Supplycurrent, IAC Maximum input current from ac adapter input 0 1.5 A

Chargecurrent, Ichrg Battery charge current 0.05 0.56 1 A

Operatingjunction temperature range, TJ0 125 °C

2 Test Summary2.1 Definitions

This procedure details how to configure the evaluation board. On the test procedure, the following naming

conventions are followed. See the schematic for details.

VXXX External voltage supply name (VIN, VBAT, VOUT)

LOADW External load name (LOADR, LOADI)

V(TPyyy) Voltage at internal test point TPyyy. For example, V(TP1) means the voltage at

TP1.

V(Jxx): Voltage at jack terminal Jxx.

V(TP(XXXXX)) Voltage at test point XXXXX. For example, V(ACDET) means the voltage at the

test point which is marked as ACDET.

V(XXX, YYY) Voltage across points XXX and YYY.

I(JXX(YYY)) Current going out from the YYY terminal of jack XX.

Jxx(BBB) Terminalor pin BBB of jack xx

Jxx ON Internaljumper Jxx terminals are shorted

Jxx OFF Internal jumper Jxx terminals are open

Jxx (-YY-) ON Internal jumper Jxx adjacent terminals marked as YY are shorted

Measure →A,B Check specified parameters A, B. If measured values are not within specified

limits, the unit under test has failed.

Observe →A,B Observe if A, B occur. If they do not occur, the unit under test has failed.

Assembly drawings show locations for jumpers, test points, and individual components.

2.2 Equipment

2.2.1 PowerSupplies

Power supply 1 (PS 1): a power supply capable of supplying 15 V at 2 A is required.

SLUU455–October 2010 bq24351EVMfor Li-Ion Charger Front-End Protection IC