Texas Instruments BQ24351EVM manual Controls and Key Parameters Setting, Definitions, Equipment

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1.4Controls and Key Parameters Setting

Jack (1)	Description	Factory Setting
JP1	If on, high-side sensing resistor is disabled	Jumper on
JP2	Reserved for other ICs	Jumper (BATEN, GND) on
JP3	bq24351 GATDRV pin	Jumper off
JP4	bq2057C BAT pin connection to bq24351	Jumper on
JP5	bq2057C VCC pin connection to bq24351	Jumper on
JP6	bq2057C CC pin connection to bq24351	Jumper on
JP7	If on, low-side current-sensing resistor is disabled	Jumper off

(1)Short JP1, 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.

1.5Recommended Operating Conditions

Symbol	Description	MIN	TYP	MAX	Unit
Supply voltage, VIN	Input voltage from ac adapter input	4.5	5	26	V
Battery voltage, VBAT	Voltage applied at VBAT terminal of J4	0	3–4.2	5	V
Supply current, IAC	Maximum input current from ac adapter input	0		1.5	A
Charge current, Ichrg	Battery charge current	0.05	0.56	1	A
Operating junction temperature range, TJ		0		125	°C

2 Test Summary

2.1Definitions

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)	Terminal or pin BBB of jack xx
Jxx ON	Internal jumper 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.

2.2Equipment

2.2.1Power Supplies

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

SLUU455 –October 2010	bq24351EVM for Li-Ion Charger Front-End Protection IC	3
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